2005 Buick Rainier Electrical Connector Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

The 2005 Buick Rainier has 542 electrical connector parts with verified fitment on this page — 128 part types and 20 brands, covering both the 4.2L L6 and the 5.3L V8. Each part includes a manufacturer part number and application notes.

On the 2005 Buick Rainier, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Most of the listed parts are Blower Motor Control Module / Resistor Connector (30 parts), A/C Refrigerant Pressure Switch Connector (16 parts) and ABS Wheel Speed Sensor Connector (13 parts). The other 125 part types cover the remaining 483 parts.

4WD Actuator Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1074
🇺🇸 US 🇨🇦 CA
Contact Terminal Material: MetalWiring Harness Length (In): 17.5
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This table covers the harness connectors at the 4WD Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

4WD Disconnect Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P2079
🇺🇸 US 🇨🇦 CA
with 12 Terminals
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This table covers the harness connectors at the 4WD Disconnect. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

4WD Indicator Light Switch Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610672
🇺🇸 US 🇨🇦 CA
with 4 Terminal(s)with 1 Female Connectors
Fitment notes — ROSTRA 610672
with 4 Terminal(s)with 1 Female ConnectorsBlack
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WELLS Fits: 4.2L L6 1P2364
🇺🇸 US 🇨🇦 CA
with 4 TerminalsBlack
Fitment notes — WELLS 1P2364
with 4 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the 4WD Indicator Light Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

4WD Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT3850
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3850
Black
AWDOval4-Way Femalewith Leads1.5MM2
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This table covers the harness connectors at the 4WD Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

A/C Clutch Switch Connector

Brand Part Number Markets Notes Buy
FOUR SEASONS Fits: 4.2L L6 37240
🇺🇸 US 🇨🇦 CA
2 Terminal Malewith Oval Connector
Fitment notes — FOUR SEASONS 37240
2 Terminal Malewith Oval ConnectorWhite and Blue
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GM GENUINE Fits: 4.2L L6 PT3910
🇺🇸 US 🇨🇦 CA
Gray2-Way Female
Fitment notes — GM GENUINE PT3910
Gray2-Way Femalewith Leads
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WELLS Fits: 4.2L L6 1P1044
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1044
Connector Shape: OblongTerminal Quantity: 2Wiring Harness Length: 9.0 In
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This table covers the harness connectors at the A/C Clutch Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

A/C Compressor Clutch Coil Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT420
🇺🇸 US 🇨🇦 CA
BlackLength: 11.4 In
Fitment notes — GM GENUINE PT420
BlackLength: 11.4 InShape: OvalTerminal Type: Pin
BLACK3-WAY FEMALEwith Leads
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ACDELCO Fits: 4.2L L6 PT2353
🇺🇸 US 🇨🇦 CA
GoldInsulated Coating: No
Fitment notes — ACDELCO PT2353
GoldInsulated Coating: NoTerminal Type: Pressure Contact
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ROSTRA Fits: 4.2L L6 610121
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S724
🇺🇸 US 🇨🇦 CA
Wire Gauge (GA): 18
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WELLS Fits: 4.2L L6 1P1220
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the A/C Compressor Clutch Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

A/C Refrigerant Pressure Switch Connector

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.2L L6 PT2319
🇺🇸 US 🇨🇦 CA
GoldTerminal Gender: Female
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GM GENUINE Popular Fits: 4.2L L6 PT420
🇺🇸 US 🇨🇦 CA
BlackLength: 11.4 In
Fitment notes — GM GENUINE PT420
BlackLength: 11.4 InShape: OvalTerminal Type: Pin
BLACK3-WAY FEMALEwith Leads
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4440
🇺🇸 US 🇨🇦 CA
Handypack
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WELLS Popular Fits: 4.2L L6 1P1065
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
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ACDELCO Fits: 4.2L L6 PT2309
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO PT2309
Gold
Low PressureCut-Off
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FOUR SEASONS Fits: 4.2L L6 37236
🇺🇸 US 🇨🇦 CA
3 Terminal Male
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ROSTRA Fits: 4.2L L6 610072
🇺🇸 US 🇨🇦 CA
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ROSTRA Fits: 4.2L L6 610225
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4750
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP4750
HandypackConnector Shape: OvalHarness Lengthinches: 12
Low PressureCut-Off
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S578
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalGauge: 18
Fitment notes — STANDARD MOTOR PRODUCTS S578
Connector Shape: OvalGauge: 18Harness Lengthinches: 12Terminal Gender: Female
Low PressureCut-Off
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S619
🇺🇸 US 🇨🇦 CA
Connector Shape: RoundTerminal Type: Blade
Fitment notes — STANDARD MOTOR PRODUCTS S619
Connector Shape: RoundTerminal Type: BladeWeather Resistant: YESWire Gauge (GA): 18
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1397
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON92
🇺🇸 US 🇨🇦 CA
CUT-OFF
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON110
🇺🇸 US 🇨🇦 CA
with Round Connector
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WELLS Fits: 4.2L L6 1P1044
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1044
Connector Shape: OblongTerminal Quantity: 2Wiring Harness Length: 9.0 In
CUT-OFF
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WELLS Fits: 4.2L L6 1P1935
🇺🇸 US 🇨🇦 CA
with 3 TerminalsBlack
Fitment notes — WELLS 1P1935
with 3 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the A/C Refrigerant Pressure Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

ABS Control Module Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT548
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT548
Black
Rectangle4-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT1116
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1116
Black
Black2-Way Femalewith LeadsMetri-Pack 480
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1337
🇺🇸 US 🇨🇦 CA
Connector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS S1337
Connector Shape: Oval
Color Code Black and Redwith 2 Female Terminals
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WELLS Fits: 4.2L L6 1P1650
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2
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WELLS Fits: 4.2L L6 1P3311
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
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This table covers the harness connectors at the ABS Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

ABS Wheel Speed Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4720
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP4720
HandypackConnector Shape: OvalIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Backing Plate and SensorHarness Lengthinches: 10.25Length (In): 1Terminal Type: BladeWiring Harness Length (mm): 304.8BlackRear
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON90
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2Weather Resistant: No
Fitment notes — UNITED MOTOR PRODUCTS CON90
Terminal Quantity: 2Weather Resistant: NoFront
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WELLS Popular Fits: 4.2L L6 1P2005
🇺🇸 US 🇨🇦 CA
Frontwith 2 Terminals
Fitment notes — WELLS 1P2005
Frontwith 2 TerminalsBlackwith Female Connector
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ACDELCO Fits: 4.2L L6 PT2307
🇺🇸 US 🇨🇦 CA
GoldShape: Rectangle
Fitment notes — ACDELCO PT2307
GoldShape: RectangleTerminal Quantity: 2Rear
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BWD/NIEHOFF Fits: 4.2L L6 PT639
🇺🇸 US 🇨🇦 CA
Abs ConnectorAT TRACTION CONTROL MODULE
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GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT2623
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2623
Black
Round or Oval2-Way Malewith Leads
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ROSTRA Fits: 4.2L L6 610167
🇺🇸 US 🇨🇦 CA
Frontwith 2 Terminal(s)
Fitment notes — ROSTRA 610167
Frontwith 2 Terminal(s)with 1 Female ConnectorsBlack
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S575
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalHarness Length
Fitment notes — STANDARD MOTOR PRODUCTS S575
Connector Shape: OvalHarness Lengthincludes ABS Wheel Speed Sensor Wire Harness, Backing Plate and Sensorinches: 10.25Length (In): 1Number of Splice Connectors Included: 0Terminal Gender: FemaleTerminal Type: BladeWiring Harness Length (mm): 304.8BlackRear
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1717
🇺🇸 US 🇨🇦 CA
Front
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WALKER PRODUCTS Fits: 4.2L L6 2701130
🇺🇸 US 🇨🇦 CA
Terminal Gender: MaleWiring Harness Length: 180.00 mm
Fitment notes — WALKER PRODUCTS 2701130
Terminal Gender: MaleWiring Harness Length: 180.00 mmIncludes Backing Plate and SensorRear
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WELLS Fits: 4.2L L6 1P1362
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1362
Connector Shape: OblongTerminal Quantity: 2Terminal Type: BladeWiring Harness Length: 7.0 InRear
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This table covers the harness connectors at each ABS wheel-speed sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Accelerator Pedal Position Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S1479
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalLength (In): 1.125
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DORMAN Fits: 4.2L L6 645595
🇺🇸 US 🇨🇦 CA
Black
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GM GENUINE Fits: 4.2L L6 PT2712
🇺🇸 US 🇨🇦 CA
BlackTerminal Type: Pin
Fitment notes — GM GENUINE PT2712
BlackTerminal Type: Pin
6-Way Femalewith Leads
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON23
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1599
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Accelerator Pedal Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Accessory Power Outlet Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610518
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1919
🇺🇸 US 🇨🇦 CA
with 3 TerminalsGray
Fitment notes — WELLS 1P1919
with 3 TerminalsGraywith Female Connector
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This table covers the harness connectors at the Accessory Power Outlet. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

AIR / Smog Pump Check Valve Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2652
🇺🇸 US 🇨🇦 CA
Natural2-Way Female
Fitment notes — GM GENUINE PT2652
Natural2-Way Femalewith Leads
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This table covers the harness connectors at the AIR / Smog Pump Check Valve. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

AIR / Smog Pump Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1417
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P3968
🇺🇸 US 🇨🇦 CA
with 2 Terminals
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This table covers the harness connectors at the AIR / Smog Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Bag Clockspring Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1295
🇺🇸 US 🇨🇦 CA
Gender: FemaleWiring Harness Length (In): 18
Fitment notes — STANDARD MOTOR PRODUCTS S1295
Gender: FemaleWiring Harness Length (In): 18
Yellowwith 4 Male Terminals
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WELLS Fits: 4.2L L6 1P1603
🇺🇸 US 🇨🇦 CA
with 4 Terminals
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This table covers the harness connectors at the Air Bag Clockspring. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Bag Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT1204
🇺🇸 US 🇨🇦 CA
Yellow2-Way Female
Fitment notes — GM GENUINE PT1204
Yellow2-Way FemaleMP150with Leads
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GM GENUINE Fits: 4.2L L6 PT2038
🇺🇸 US 🇨🇦 CA
Yellow4-Way Male
Fitment notes — GM GENUINE PT2038
Yellow4-Way MaleMetri-Pack 280with Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1341
🇺🇸 US 🇨🇦 CA
Weather Resistant: No
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WELLS Fits: 4.2L L6 1P1958
🇺🇸 US 🇨🇦 CA
with 2 Terminals
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WELLS Fits: 4.2L L6 1P1937
🇺🇸 US 🇨🇦 CA
F
Fitment notes — WELLS 1P1937
F
or:
Front End Discriminating Sensorwith 2 TerminalsYellowFemale End
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This table covers the harness connectors at the Air Bag. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Bag Module Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT1204
🇺🇸 US 🇨🇦 CA
Yellow2-Way Female
Fitment notes — GM GENUINE PT1204
Yellow2-Way FemaleMP150with LeadsRoof Side Rail Air Bag
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DORMAN Fits: 4.2L L6 645599
🇺🇸 US 🇨🇦 CA
Yellow
Fitment notes — DORMAN 645599
Yellow
4 Way Male with LeadsAt Steering Wheel Air Bag
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1341
🇺🇸 US 🇨🇦 CA
Weather Resistant: No
Fitment notes — STANDARD MOTOR PRODUCTS S1341
Weather Resistant: No
Yellowwith 2 Female Terminals
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WELLS Fits: 4.2L L6 1P1958
🇺🇸 US 🇨🇦 CA
with 2 Terminals
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WELLS Fits: 4.2L L6 1P3897
🇺🇸 US 🇨🇦 CA
Instrument Panel Air Bag Module Connectorwith 5 Blade Terminals
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This table covers the harness connectors at the Air Bag Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Injection Relay Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1384
🇺🇸 US 🇨🇦 CA
GrayElectric Air Injection Reactor (K18)
Fitment notes — GM GENUINE PT1384
GrayElectric Air Injection Reactor (K18)4-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1417
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Air Injection Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Intake / Charge Temperature Sensor Connector

Brand Part Number Markets Notes Buy
SKP Popular Fits: 4.2L L6 SKS556
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4420
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP4420
Handypack
Intake Air
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WELLS Popular Fits: 4.2L L6 1P1016
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangular
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ACDELCO Fits: 4.2L L6 PT2301
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO PT2301
Gold
Intake Air
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DORMAN Fits: 4.2L L6 645168
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — DORMAN 645168
Black
2 Way Female with Leads
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GM GENUINE Fits: 4.2L L6 PT2796
🇺🇸 US 🇨🇦 CA
BlackTerminal Type: Blade Pin
Fitment notes — GM GENUINE PT2796
BlackTerminal Type: Blade Pin
BLACK2-WAY FEMALEwith Leads
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HOLSTEIN Fits: 4.2L L6 2HAR0050
🇺🇸 US 🇨🇦 CA
Located On Intake Air
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ROSTRA Fits: 4.2L L6 610194
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S556
🇺🇸 US 🇨🇦 CA
Intake Air
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ULTRA-POWER Fits: 4.2L L6 2101501
🇺🇸 US 🇨🇦 CA
Air Charged Temperature ConnectorAt Temperature Sensor
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON81
🇺🇸 US 🇨🇦 CA
Connector Shape: SquareTerminal Quantity: 2
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WALKER PRODUCTS Fits: 4.2L L6 2101501
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Air Intake / Charge Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Air Suspension Compressor Connector

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.2L L6 PT3871
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO PT3871
GM Original Equipment
Relay ConnectorBlackAuto Air LVL Cont (G67)8-Way Femalewith LeadsMotor Connector
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ROSTRA Fits: 4.2L L6 610442
🇺🇸 US 🇨🇦 CA
Relay ConnectorModule Connector
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1501
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
Fitment notes — STANDARD MOTOR PRODUCTS S1501
Connector Shape: Rectangle
Relay ConnectorMotor Connector
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WELLS Fits: 4.2L L6 1P1848
🇺🇸 US 🇨🇦 CA
Relay ConnectorModule Connector
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WELLS Fits: 4.2L L6 1P3311
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
Fitment notes — WELLS 1P3311
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
Relay Connectorwith 8 Terminal(s)Motor Connector
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This table covers the harness connectors at the Air Suspension Compressor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Alternator / Generator Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT1383
🇺🇸 US 🇨🇦 CA
Beige2-Way Female
Fitment notes — GM GENUINE PT1383
Beige2-Way Female4-Way Base with Leads
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S1236
🇺🇸 US 🇨🇦 CA
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DORMAN Fits: 4.2L L6 645569
🇺🇸 US 🇨🇦 CA
with 2 Wires
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ROSTRA Fits: 4.2L L6 610097
🇺🇸 US 🇨🇦 CA
with 2 Terminal(s)
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON16
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1873
🇺🇸 US 🇨🇦 CA
with 2 Terminal Connector
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This table covers the harness connectors at the Alternator / Generator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Ambient Air Temperature Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT248
🇺🇸 US 🇨🇦 CA
OutsideGreen
Fitment notes — GM GENUINE PT248
OutsideGreen2-Way Femalewith Leads
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WELLS Popular Fits: 4.2L L6 1P1018
🇺🇸 US 🇨🇦 CA
Externally Mountedwithout Bracket
Fitment notes — WELLS 1P1018
Externally Mountedwithout Bracketwith 2 TerminalsGreenMale End
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ACDELCO Fits: 4.2L L6 PT2321
🇺🇸 US 🇨🇦 CA
Gold
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ROSTRA Fits: 4.2L L6 610285
🇺🇸 US 🇨🇦 CA
Interior Air Temperature
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S634
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalTerminal Type: Blade
Fitment notes — STANDARD MOTOR PRODUCTS S634
Connector Shape: OvalTerminal Type: BladeWiring Harness Length (mm): 266.7black
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WELLS Fits: 4.2L L6 1P1364
🇺🇸 US 🇨🇦 CA
Internal Mounted
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This table covers the harness connectors at the Ambient Air Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Anti-Theft Control Module Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT240
🇺🇸 US 🇨🇦 CA
Red2-Way Female
Fitment notes — GM GENUINE PT240
Red2-Way Femalewith LeadsLamp Connector
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GM GENUINE Fits: 4.2L L6 PT150
🇺🇸 US 🇨🇦 CA
Natural10-Way Female
Fitment notes — GM GENUINE PT150
Natural10-Way FemaleMetri-Pack 150with Leads
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WELLS Fits: 4.2L L6 1P2008
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Anti-Theft Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Automatic Headlamp Sensor Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P1663
🇺🇸 US 🇨🇦 CA
Gender: Male
Fitment notes — WELLS 1P1663
Gender: Male
4 Terminal, Also Used as Automatic Headlight Sensor Connector
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This table covers the harness connectors at the Automatic Headlamp Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Back Up / Reverse Lamp Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1554
🇺🇸 US 🇨🇦 CA
5-WAY FEMALE GRAY
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GM GENUINE Fits: 4.2L L6 PT1555
🇺🇸 US 🇨🇦 CA
5-WAY FEMALE BLACK
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S2440
🇺🇸 US 🇨🇦 CA
Gray
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WELLS Fits: 4.2L L6 1P1604
🇺🇸 US 🇨🇦 CA
with 5 Terminals
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This table covers the harness connectors at the Back Up / Reverse Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Blower Motor Connector

Brand Part Number Markets Notes Buy
FOUR SEASONS Popular Fits: 4.2L L6 70056
🇺🇸 US 🇨🇦 CA
2 Terminal Male
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GM GENUINE Popular Fits: 4.2L L6 PT2195
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2195
Black
Black7-Way Femalewith Leads
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DORMAN Fits: 4.2L L6 645541
🇺🇸 US 🇨🇦 CA
6 Way Female with Leads
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FOUR SEASONS Fits: 4.2L L6 37272
🇺🇸 US 🇨🇦 CA
3 Terminal Male
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GM GENUINE Fits: 4.2L L6 PT319
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT319
Black
BLACK6-WAY FEMALEwith Leads
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GM GENUINE Fits: 4.2L L6 PT3847
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3847
Black
Black3-Way Femalewith Leads2.5MM2
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HOLSTEIN Fits: 4.2L L6 2HAR0023
🇺🇸 US 🇨🇦 CA
Blackwith 3 Female Terminals
Fitment notes — HOLSTEIN 2HAR0023
Blackwith 3 Female Terminalswith 2.5mm Lead Wires
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ROSTRA Fits: 4.2L L6 610126
🇺🇸 US 🇨🇦 CA
with 3 Terminal(s)with 1 Female Connectors
Fitment notes — ROSTRA 610126
with 3 Terminal(s)with 1 Female ConnectorsBlack
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1153
🇺🇸 US 🇨🇦 CA
Gender: MaleWiring Harness Length (In): 9
Fitment notes — STANDARD MOTOR PRODUCTS S1153
Gender: MaleWiring Harness Length (In): 9Wiring Harness Length (mm): 228.6black
blackwith 3 Female Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1366
🇺🇸 US 🇨🇦 CA
Wiring Harness Length (mm): 457.2
Fitment notes — STANDARD MOTOR PRODUCTS S1366
Wiring Harness Length (mm): 457.2
blackwith 4 Female Terminals
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This table covers the harness connectors at the Blower Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Blower Motor Control Module / Resistor Connector

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 4.2L L6 645702
🇺🇸 US 🇨🇦 CA
Female
Fitment notes — DORMAN 645702
Female
Except Climate Control
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FOUR SEASONS Popular Fits: 4.2L L6 70050
🇺🇸 US 🇨🇦 CA
7 Terminal MaleHigh Temperature
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FOUR SEASONS Popular Fits: 4.2L L6 70056
🇺🇸 US 🇨🇦 CA
2 Terminal Male
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GM GENUINE Popular Fits: 4.2L L6 PT2195
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2195
Black
FrontDual Zone Climate Control with Manual Controls (blue/Red dials only)7-Way Femalewith Leads
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GPD Popular Fits: 4.2L L6 1711755
🇺🇸 US 🇨🇦 CA
Blower Motor Resistor Pigtail
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WELLS Popular Fits: 4.2L L6 1P1437
🇺🇸 US 🇨🇦 CA
without Automatic Temperature Control
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ACDELCO Fits: 4.2L L6 PT2485
🇺🇸 US 🇨🇦 CA
GoldShape: Rectangle
Fitment notes — ACDELCO PT2485
GoldShape: Rectangle
Black7 Terminal Female
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DORMAN Fits: 4.2L L6 973300
🇺🇸 US 🇨🇦 CA
Harness
Fitment notes — DORMAN 973300
Harness
without Climate control
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FOUR SEASONS Fits: 4.2L L6 37272
🇺🇸 US 🇨🇦 CA
3 Terminal Male
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FOUR SEASONS Fits: 4.2L L6 37242
🇺🇸 US 🇨🇦 CA
7 Terminal MaleStandard Temperature
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FOUR SEASONS Fits: 4.2L L6 37266
🇺🇸 US 🇨🇦 CA
5 Terminal Male
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HOLSTEIN Fits: 4.2L L6 2HAR0023
🇺🇸 US 🇨🇦 CA
Blackwith 3 Female Terminals
Fitment notes — HOLSTEIN 2HAR0023
Blackwith 3 Female Terminalswith 2.5mm Lead Wires
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HOLSTEIN Fits: 4.2L L6 2HAR0014
🇺🇸 US 🇨🇦 CA
without Automatic Temp Control7 Terminals
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HOLSTEIN Fits: 4.2L L6 2HAR0047
🇺🇸 US 🇨🇦 CA
with Automatic Temperature ControlMultiple Connectors Required
Fitment notes — HOLSTEIN 2HAR0047
with Automatic Temperature ControlMultiple Connectors Required5 Terminals
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HOLSTEIN Fits: 4.2L L6 2HAR0044
🇺🇸 US 🇨🇦 CA
with Automatic Temperature ControlMultiple Connectors Required
Fitment notes — HOLSTEIN 2HAR0044
with Automatic Temperature ControlMultiple Connectors Required5 Terminals
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ROSTRA Fits: 4.2L L6 610013
🇺🇸 US 🇨🇦 CA
without Automatic Temperature Control
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ROSTRA Fits: 4.2L L6 610126
🇺🇸 US 🇨🇦 CA
with Automatic Temperature Control
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4230
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Rectangle
Fitment notes — STANDARD MOTOR PRODUCTS HP4230
HandypackConnector Shape: RectangleWeather Resistant: NoBlack
without Automatic Temperature Controlwith 7 Terminal Connector
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S916
🇺🇸 US 🇨🇦 CA
Connector Shape: RectangleWeather Resistant: No
Fitment notes — STANDARD MOTOR PRODUCTS S916
Connector Shape: RectangleWeather Resistant: NoWiring Harness Length (mm): 184.15Black
without Automatic Temperature Controlwith 7 Terminal Connector
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP3865
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP3865
Handypack
with Automatic Temperature Controlwith 2 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1112
🇺🇸 US 🇨🇦 CA
Length (In): 1Black
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S2920
🇺🇸 US 🇨🇦 CA
with Automatic Temperature Control
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S916HT
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S916HT
Black
Front and Rearwith High Temperature
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4652
🇺🇸 US 🇨🇦 CA
Handy PackBlack
Fitment notes — STANDARD MOTOR PRODUCTS HP4652
Handy PackBlack
with Automatic Temperature Controlwith 5 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1619
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1619
Black
with Automatic Temperature Controlwith 5 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1591
🇺🇸 US 🇨🇦 CA
Gender: MaleLength (In): 1.25
Fitment notes — STANDARD MOTOR PRODUCTS S1591
Gender: MaleLength (In): 1.25
with Automatic Temperature Controlwith 2 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1619HT
🇺🇸 US 🇨🇦 CA
Blue Streak
Fitment notes — STANDARD MOTOR PRODUCTS S1619HT
Blue Streak
Front and Rearwith Automatic Temperature Controlwith 5 Blade Terminalswith High Temperature
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON188
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 7
Fitment notes — UNITED MOTOR PRODUCTS CON188
Terminal Quantity: 7
with 7 Terminalswithout Automatic Temperature Control
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON31
🇺🇸 US 🇨🇦 CA
with Multiple Connectors Requiredwith 5 Terminals
Fitment notes — UNITED MOTOR PRODUCTS CON31
with Multiple Connectors Requiredwith 5 Terminalswith Automatic Temperature Control You Can Set a specific numeric temperature
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON29
🇺🇸 US 🇨🇦 CA
with Multiple Connectors Requiredwith 2 Terminals
Fitment notes — UNITED MOTOR PRODUCTS CON29
with Multiple Connectors Requiredwith 2 Terminalswith Automatic Temperature Control You Can Set a specific numeric temperature
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This table covers the connectors at the blower resistor or control module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Blower Motor Relay Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S803
🇺🇸 US 🇨🇦 CA
Connector Shape: SquareWire Gauge (GA): 12, 14
Fitment notes — STANDARD MOTOR PRODUCTS S803
Connector Shape: SquareWire Gauge (GA): 12, 14
Blower Relay
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON164
🇺🇸 US 🇨🇦 CA
Terminal Gender: FemaleTerminal Quantity: 5
Fitment notes — UNITED MOTOR PRODUCTS CON164
Terminal Gender: FemaleTerminal Quantity: 5Terminal Type: Blade
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ACDELCO Fits: 4.2L L6 PT2371
🇺🇸 US 🇨🇦 CA
GoldShape: Square
Fitment notes — ACDELCO PT2371
GoldShape: Square
Blower Relay
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FOUR SEASONS Fits: 4.2L L6 37232
🇺🇸 US 🇨🇦 CA
5 Terminal MaleMini Terminal
Fitment notes — FOUR SEASONS 37232
5 Terminal MaleMini TerminalRelay Harness Connector
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ROSTRA Fits: 4.2L L6 610138
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4655
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Square
Fitment notes — STANDARD MOTOR PRODUCTS HP4655
HandypackConnector Shape: Square
Blower Relay
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This table covers the harness connectors at the Blower Motor Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Blower Switch Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645516
🇺🇸 US 🇨🇦 CA
Fits Frontwith Manual Air Conditioning Controls
Fitment notes — DORMAN 645516
Fits:
Frontwith Manual Air Conditioning Controlswith Rear Window Defogger
or:
Rearwith Manual Air Conditioning Controlswith Rear Window Defogger
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This table covers the harness connectors at the Blower Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Body Control Module (BCM) Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P1906
🇺🇸 US 🇨🇦 CA
with 6 TerminalsBlack
Fitment notes — WELLS 1P1906
with 6 TerminalsBlackwith Female Connector
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WELLS Fits: 4.2L L6 1P1949
🇺🇸 US 🇨🇦 CA
with 6 TerminalsNatural or White
Fitment notes — WELLS 1P1949
with 6 TerminalsNatural or Whitewith Female Connector
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This table covers the harness connectors at the Body Control Module (BCM). Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Body Wiring Harness / Connector

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.2L L6 PT2834
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO PT2834
GM Original Equipment
BLACK3-WAY FEMALEwith Leads
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DORMAN Popular Fits: 4.2L L6 645595
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — DORMAN 645595
Black
6 WayFemale with Leads
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ACDELCO Fits: 4.2L L6 PT1462
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO PT1462
GM Original Equipment
LH, RH, FRT DR9-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 19180282
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 19180282
Black
BlackAll Terminal 1.5MM Wide16-Way Femalewithout Leads150 Series, Sealed
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GM GENUINE Fits: 4.2L L6 PT2879
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2879
Black
GT2804-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT2038
🇺🇸 US 🇨🇦 CA
Yellow4-Way Male
Fitment notes — GM GENUINE PT2038
Yellow4-Way MaleMetri-Pack 280with Leads
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GM GENUINE Fits: 4.2L L6 PT3907
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3907
Black
Square, From Liftgate Harness6-Way Malewith LeadsMetri-Pack 280
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GM GENUINE Fits: 4.2L L6 PT1870
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1870
Black
From INSTRUMENT PANEL HARN4-Way Malewith LeadsGT 150
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1200
🇺🇸 US 🇨🇦 CA
Attachment Method: Push OnGender: Female
Fitment notes — STANDARD MOTOR PRODUCTS S1200
Attachment Method: Push OnGender: Female
with 1 Locking TabColor Code Black and Bluewith 6 Male Terminals
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WELLS Fits: 4.2L L6 1P1958
🇺🇸 US 🇨🇦 CA
To Seat Belt Pre-Tensioner Wiring Harnesswith 2 Terminals
Fitment notes — WELLS 1P1958
To Seat Belt Pre-Tensioner Wiring Harnesswith 2 TerminalsYellowFemale End
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This table covers the body-harness connectors and pigtails. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Brake Fluid Level Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 TX3A
🇺🇸 US 🇨🇦 CA
Wiring Harness Length (mm): 158.75Black
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WELLS Popular Fits: 4.2L L6 1P1006
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongWiring Harness Length: 9.5 In
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ACDELCO Fits: 4.2L L6 PT2386
🇺🇸 US 🇨🇦 CA
GoldShape: Square
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GM GENUINE Fits: 4.2L L6 PT1798
🇺🇸 US 🇨🇦 CA
GT150Gray
Fitment notes — GM GENUINE PT1798
GT150Gray2-Way FemaleGT150 Sealedwith Leads
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SKP Fits: 4.2L L6 SKTX3A
🇺🇸 US 🇨🇦 CA
Fits Blackor 2 Terminal Female
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP3840
🇺🇸 US 🇨🇦 CA
HandypackWiring Harness Length (mm): 158.75
Fitment notes — STANDARD MOTOR PRODUCTS HP3840
HandypackWiring Harness Length (mm): 158.75black
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON203
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Brake Fluid Level Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Brake Light Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT392
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT392
Black
6-Way Female with Leads
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ACDELCO Fits: 4.2L L6 PT2362
🇺🇸 US 🇨🇦 CA
Gold
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ROSTRA Fits: 4.2L L6 610100
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S749
🇺🇸 US 🇨🇦 CA
Black
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WELLS Fits: 4.2L L6 1P1305
🇺🇸 US 🇨🇦 CA
Wiring Harness Length: 8.41 In
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This table covers the harness connectors at the Brake Light Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Brake Pedal Position Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT3837
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3837
Black
3-Way Femalewith LeadsGT1501.5MM2
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This table covers the harness connectors at the Brake Pedal Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Cabin Air Temperature Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT146
Black
Black2-Way Femalewith LeadsSquareDuct Air Temp Sensor Connector
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1104
🇺🇸 US 🇨🇦 CA
Connector Shape: RectangleGender: Female
Fitment notes — STANDARD MOTOR PRODUCTS S1104
Connector Shape: RectangleGender: FemaleLength (In): 1
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This table covers the harness connectors at the Cabin Air Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Camshaft Position Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S574
🇺🇸 US 🇨🇦 CA
Wire Gauge (GA): 16Wiring Harness Length (mm): 304.8
Fitment notes — STANDARD MOTOR PRODUCTS S574
Wire Gauge (GA): 16Wiring Harness Length (mm): 304.8
Color Code Black and Greenwith 3 Female Terminals
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON89
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 3
Fitment notes — UNITED MOTOR PRODUCTS CON89
Terminal Quantity: 3
with 3 Female Terminalswith Black and Green Connector
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WALKER PRODUCTS Popular Fits: 4.2L L6 2701086
🇺🇸 US 🇨🇦 CA
Includes Boot and Spring
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ACDELCO Fits: 4.2L L6 PT2306
🇺🇸 US 🇨🇦 CA
GoldInsulated Coating: YES
Fitment notes — ACDELCO PT2306
GoldInsulated Coating: YES
with 3 Female TerminalsColor Code Black and Green
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GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT1496
🇺🇸 US 🇨🇦 CA
3-WAY FEMALE BLACK
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ROSTRA Fits: 4.2L L6 610133
🇺🇸 US 🇨🇦 CA
View on
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SKP Fits: 4.2L L6 SKS724
🇺🇸 US 🇨🇦 CA
View on
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ULTRA-POWER Fits: 4.2L L6 2701086
🇺🇸 US 🇨🇦 CA
Cam Position Sensor Connector
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WELLS Fits: 4.2L L6 1P1033
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 3
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This table covers the harness connectors at the Camshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Chassis Wiring Harness / Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1798
🇺🇸 US 🇨🇦 CA
GrayFrom Engine Harness, GT150
Fitment notes — GM GENUINE PT1798
GrayFrom Engine Harness, GT1502-Way FemaleGT150 Sealedwith Leads
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WELLS Fits: 4.2L L6 1P2561
🇺🇸 US 🇨🇦 CA
with 4 TerminalsBlack
Fitment notes — WELLS 1P2561
with 4 TerminalsBlackwith Female Connector
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This table covers the wiring-harness connectors at the Chassis. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Cigarette Lighter Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610518
🇺🇸 US 🇨🇦 CA
with 3 Terminal(s)with 1 Female Connectors
Fitment notes — ROSTRA 610518
with 3 Terminal(s)with 1 Female ConnectorsGray
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1167
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P1919
🇺🇸 US 🇨🇦 CA
with 3 TerminalsGray
Fitment notes — WELLS 1P1919
with 3 TerminalsGraywith Female Connector
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This table covers the harness connectors at the Cigarette Lighter. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Climate Control Sun Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT3836
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3836
Black
Black4-Way Femalewith Leads
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WELLS Fits: 4.2L L6 1P1663
🇺🇸 US 🇨🇦 CA
Gender: Male
Fitment notes — WELLS 1P1663
Gender: Male
with 4 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Climate Control Sun Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Clutch Pedal Position / Starter Safety Switch Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P1884
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Clutch Pedal Position / Starter Safety Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Communication Interface Module (VCIM) Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1502
🇺🇸 US 🇨🇦 CA
Natural12-Way Female
Fitment notes — GM GENUINE PT1502
Natural12-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT1404
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1404
Black
Black16-Way Femalewith Leads
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WELLS Fits: 4.2L L6 1P2613
🇺🇸 US 🇨🇦 CA
with 16 TerminalsNatural or White
Fitment notes — WELLS 1P2613
with 16 TerminalsNatural or WhiteFemale End
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This table covers the harness connectors at the Communication Interface Module (VCIM). Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Coolant Level Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4720
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP4720
HandypackConnector Shape: OvalIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Backing Plate and SensorHarness Lengthinches: 10.25Length (In): 1Terminal Type: BladeWiring Harness Length (mm): 304.8Black
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON90
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2Weather Resistant: No
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ACDELCO Fits: 4.2L L6 PT2307
🇺🇸 US 🇨🇦 CA
GoldShape: Rectangle
Fitment notes — ACDELCO PT2307
GoldShape: RectangleTerminal Quantity: 2
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SKP Fits: 4.2L L6 SKS574
🇺🇸 US 🇨🇦 CA
with 3 Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S575
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalHarness Length
Fitment notes — STANDARD MOTOR PRODUCTS S575
Connector Shape: OvalHarness Lengthincludes ABS Wheel Speed Sensor Wire Harness, Backing Plate and Sensorinches: 10.25Length (In): 1Number of Splice Connectors Included: 0Terminal Gender: FemaleTerminal Type: BladeWiring Harness Length (mm): 304.8Black
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WALKER PRODUCTS Fits: 4.2L L6 2701130
🇺🇸 US 🇨🇦 CA
Terminal Gender: MaleWiring Harness Length: 180.00 mm
Fitment notes — WALKER PRODUCTS 2701130
Terminal Gender: MaleWiring Harness Length: 180.00 mmIncludes Backing Plate and Sensor
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This table covers the harness connectors at the Coolant Level Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Crankshaft Position Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 TX3A
🇺🇸 US 🇨🇦 CA
Wiring Harness Length (mm): 158.75Black
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WELLS Popular Fits: 4.2L L6 1P1006
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongWiring Harness Length: 9.5 In
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ACDELCO Fits: 4.2L L6 PT2386
🇺🇸 US 🇨🇦 CA
GoldShape: Square
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GM GENUINE Fits: 4.2L L6 PT2437
🇺🇸 US 🇨🇦 CA
Terminal Type: PinBlack
Fitment notes — GM GENUINE PT2437
Terminal Type: PinBlack
BLACK2-WAY FEMALEwith Leads
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SKP Fits: 4.2L L6 SKTX3A
🇺🇸 US 🇨🇦 CA
Fits Blackor 2 Terminal Female
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP3840
🇺🇸 US 🇨🇦 CA
HandypackWiring Harness Length (mm): 158.75
Fitment notes — STANDARD MOTOR PRODUCTS HP3840
HandypackWiring Harness Length (mm): 158.75black
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON203
🇺🇸 US 🇨🇦 CA
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WALKER PRODUCTS Fits: 4.2L L6 2111500
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2Includes O-Ring
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This table covers the harness connectors at the Crankshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Cruise Control Switch Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1399
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1399
Black
with 5 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1598
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangleblack
Fitment notes — STANDARD MOTOR PRODUCTS S1598
Connector Shape: Rectangleblack
with 8 Terminal(s)
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WELLS Fits: 4.2L L6 1P1643
🇺🇸 US 🇨🇦 CA
with 5 Terminals
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WELLS Fits: 4.2L L6 1P1651
🇺🇸 US 🇨🇦 CA
with 8 Terminals
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This table covers the harness connectors at the Cruise Control Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Deck Lid / Liftgate Ajar Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1798
🇺🇸 US 🇨🇦 CA
Gray2-Way Female
Fitment notes — GM GENUINE PT1798
Gray2-Way FemaleGT150 Sealedwith Leads
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ROSTRA Fits: 4.2L L6 610065
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1026
🇺🇸 US 🇨🇦 CA
Terminal Type: BladeWiring Harness Length: 9.25 In
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This table covers the harness connectors at the Deck Lid / Liftgate Ajar Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Door Lock Actuator Connector

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.2L L6 PT2296
🇺🇸 US 🇨🇦 CA
GoldTerminal Quantity: 4
Fitment notes — ACDELCO PT2296
GoldTerminal Quantity: 4Terminal Type: Pressure Contact
Black and Blue4 Terminal Female
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP3895
🇺🇸 US 🇨🇦 CA
HandypackLength (In): 1.125
Fitment notes — STANDARD MOTOR PRODUCTS HP3895
HandypackLength (In): 1.125Black
Color Code Black and Bluewith 4 Blade Terminals
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DORMAN Fits: 4.2L L6 645596
🇺🇸 US 🇨🇦 CA
4 Way Female with LeadsBlack Rectangle
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GM GENUINE Fits: 4.2L L6 PT548
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT548
Black
Rectangle4-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT265
🇺🇸 US 🇨🇦 CA
BlackShape: Rectangular
Fitment notes — GM GENUINE PT265
BlackShape: Rectangular
BLACK8-WAY FEMALEwith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S551
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalLength (In): 1.125
Fitment notes — STANDARD MOTOR PRODUCTS S551
Connector Shape: OvalLength (In): 1.125Terminal Type: BladeBlack
Color Code Black and Bluewith 4 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S689
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangleblack
Fitment notes — STANDARD MOTOR PRODUCTS S689
Connector Shape: Rectangleblack
Color Code Black and Bluewith 2 Female Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1256
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalWiring Harness Length (mm): 438.15
Fitment notes — STANDARD MOTOR PRODUCTS S1256
Connector Shape: OvalWiring Harness Length (mm): 438.15
with Latch Assemblypurplewith 2 Terminal(s)
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WELLS Fits: 4.2L L6 1P1146
🇺🇸 US 🇨🇦 CA
with 2 Terminals
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This table covers the harness connectors at the Door Lock Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Door Lock Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT248
🇺🇸 US 🇨🇦 CA
Green2-Way Female
Fitment notes — GM GENUINE PT248
Green2-Way Femalewith Leads
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BWD/NIEHOFF Fits: 4.2L L6 PT639
🇺🇸 US 🇨🇦 CA
Fits Front RightDoor Lock Connector
Fitment notes — BWD/NIEHOFF PT639
Fits:
Front RightDoor Lock ConnectorAt Switch
or:
RightDoor Lock ConnectorAt SwitchFront
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HOLSTEIN Fits: 4.2L L6 2HAR0024
🇺🇸 US 🇨🇦 CA
Front Right
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1141
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1141
Black
Front Right
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WELLS Fits: 4.2L L6 1P1018
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Door Lock Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Door Wiring Harness / Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S2350
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S2350
Black
with 7 Female Terminals
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This table covers the wiring-harness connectors at the Door. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Driver Information Display Switch Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610637
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1597
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P2207
🇺🇸 US 🇨🇦 CA
with 6 TerminalsBlack
Fitment notes — WELLS 1P2207
with 6 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Driver Information Display Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

EGR Valve Connector

Brand Part Number Markets Notes Buy
SKP Fits: 4.2L L6 SKS575
🇺🇸 US 🇨🇦 CA
Rear
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1054
🇺🇸 US 🇨🇦 CA
Terminal Type: Blade
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON9
🇺🇸 US 🇨🇦 CA
Color: BlackTerminal Quantity: 5
Fitment notes — UNITED MOTOR PRODUCTS CON9
Color: BlackTerminal Quantity: 5Terminal Type: Blade
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This table covers the harness connectors at the EGR Valve. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Electronic Suspension Control Module Connector

Brand Part Number Markets Notes Buy
ACDELCO Fits: 4.2L L6 PT3871
🇺🇸 US 🇨🇦 CA
GM Original Equipment
Fitment notes — ACDELCO PT3871
GM Original Equipment
BLACK8-WAY FEMALEwith Leads
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WELLS Fits: 4.2L L6 1P3311
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
Fitment notes — WELLS 1P3311
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
with Smooth Ride Chassis Package
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This table covers the harness connectors at the Electronic Suspension Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Engine Wiring Harness / Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 19180282
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 19180282
Black
BLACK16-WAY FEMALEwithout LEADS150 SERIES, SEALED
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GM GENUINE Fits: 4.2L L6 PT1669
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1669
Black
GT1502-Way Malewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1075
🇺🇸 US 🇨🇦 CA
View on
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This table covers the wiring-harness connectors at the Engine. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Flex Fuel Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2830
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2830
Black
BlackAccepts 1.5MM Terminals2-Way FemaleMetri-Pack 150 Serieswith Leads
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This table covers the harness connectors at the Flex Fuel Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fog / Driving Lamp Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP3835
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP3835
HandypackConnector Shape: OvalWiring Harness Length (mm): 311.15
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S553
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalContact Terminal Material: Metal
Fitment notes — STANDARD MOTOR PRODUCTS S553
Connector Shape: OvalContact Terminal Material: MetalNumber of Splice Connectors Included: 0Wiring Harness Length (In): 12.25Wiring Harness Length (mm): 311.15
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ACDELCO Fits: 4.2L L6 PT2298
🇺🇸 US 🇨🇦 CA
GoldHeight (In): 1.5 in
Fitment notes — ACDELCO PT2298
GoldHeight (In): 1.5 inShape: Rectangle
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DORMAN Fits: 4.2L L6 85855
🇺🇸 US 🇨🇦 CA
2-WireFog Lamp Socket Bulbs 881 & 889
Fitment notes — DORMAN 85855
2-WireFog Lamp Socket Bulbs 881 & 889
2 Way Female with LeadsBlack Oval
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GM GENUINE Fits: 4.2L L6 PT3786
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3786
Black
Black2-Way Femalewith LeadsM/P280,SealedSingle Release Tab On Top
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ROSTRA Fits: 4.2L L6 610003
🇺🇸 US 🇨🇦 CA
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SKP Fits: 4.2L L6 SKS553
🇺🇸 US 🇨🇦 CA
Fits Black and Blu
Fitment notes — SKP SKS553
Fits:
Black and Blu
or:
2 Terminal Female
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON78
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1032
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Fog / Driving Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fog / Driving Lamp Switch Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1069
🇺🇸 US 🇨🇦 CA
Multiple Connectors Required
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This table covers the harness connectors at the Fog / Driving Lamp Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fuel Injector Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT3707
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3707
Black
BLACK8-WAY FEMALEwith Leads
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4225
🇺🇸 US 🇨🇦 CA
Handypack
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DORMAN Fits: 4.2L L6 645595
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — DORMAN 645595
Black
6 WayFemale with Leads
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GB REMANUFACTURING Fits: 4.2L L6 5190
🇺🇸 US 🇨🇦 CA
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GM GENUINE Fits: 4.2L L6 PT2135
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2135
Black
2-Way Femalewith LeadsMicro 0641In
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1014
🇺🇸 US 🇨🇦 CA
Length (In): 1
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON3
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1575
🇺🇸 US 🇨🇦 CA
Wiring Harness Length: 16.0 In
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This table covers the harness connectors at the Fuel Injector. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fuel Sending Unit Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S1365
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
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FAMOUS BRAND Fits: 4.2L L6 PTA1372
🇺🇸 US 🇨🇦 CA
Fuel Sender Connectorwith 4 Terminal(s)
Fitment notes — FAMOUS BRAND PTA1372
Fuel Sender Connectorwith 4 Terminal(s)with Female ConnectorGray
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GM GENUINE Fits: 4.2L L6 PT1537
🇺🇸 US 🇨🇦 CA
Gray4-Way Female
Fitment notes — GM GENUINE PT1537
Gray4-Way Femalewith LeadsPrimary
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ROSTRA Fits: 4.2L L6 610749
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P2606
🇺🇸 US 🇨🇦 CA
with 4 TerminalsGray
Fitment notes — WELLS 1P2606
with 4 TerminalsGraywith Female Connector
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This table covers the harness connectors at the Fuel Sending Unit. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fuel Tank Pressure Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2782
🇺🇸 US 🇨🇦 CA
Terminal Type: Blade PinWidth: 3 In
Fitment notes — GM GENUINE PT2782
Terminal Type: Blade PinWidth: 3 InBlack
BLACK3-WAY FEMALEwith Leads
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SKP Popular Fits: 4.2L L6 SKS656
🇺🇸 US 🇨🇦 CA
Fits Black and Purpl
Fitment notes — SKP SKS656
Fits:
Black and Purpl
or:
3 Terminal Female
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4240
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
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ACDELCO Fits: 4.2L L6 PT1910
🇺🇸 US 🇨🇦 CA
GoldTerminal Type: Pin
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GM GENUINE Fits: 4.2L L6 PT1537
🇺🇸 US 🇨🇦 CA
Gray4-Way Female
Fitment notes — GM GENUINE PT1537
Gray4-Way Femalewith LeadsPrimary
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ROSTRA Fits: 4.2L L6 610018
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S656
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalGauge: 18
Fitment notes — STANDARD MOTOR PRODUCTS S656
Connector Shape: OvalGauge: 18Wiring Harness Length (mm): 254
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1365
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON124
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 3
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WALKER PRODUCTS Fits: 4.2L L6 2701038
🇺🇸 US 🇨🇦 CA
Includes O-Ring, Seal
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WELLS Fits: 4.2L L6 1P1209
🇺🇸 US 🇨🇦 CA
Gender: MaleWiring Harness Length: 9.5 In
Fitment notes — WELLS 1P1209
Gender: MaleWiring Harness Length: 9.5 In
with 3 Terminals
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This table covers the harness connectors at the Fuel Tank Pressure Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fuse Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P2351
🇺🇸 US 🇨🇦 CA
with 2 TerminalsGray
Fitment notes — WELLS 1P2351
with 2 TerminalsGrayFemale End
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This table covers the harness connectors at the Fuse. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Hazard Warning Switch Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1399
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1399
Black
with 5 Blade Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1598
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangleblack
Fitment notes — STANDARD MOTOR PRODUCTS S1598
Connector Shape: Rectangleblack
with 8 Terminal(s)
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This table covers the harness connectors at the Hazard Warning Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Headlamp Dimmer Switch Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1399
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1399
Black
with 5 Female TerminalsHeadlamp Dimmer
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1598
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangleblack
Fitment notes — STANDARD MOTOR PRODUCTS S1598
Connector Shape: Rectangleblack
with 8 Female TerminalsHeadlamp Dimmer
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This table covers the harness connectors at the Headlamp Dimmer Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Headlamp Switch Connector

Brand Part Number Markets Notes Buy
WELLS Popular Fits: 4.2L L6 1P2079
🇺🇸 US 🇨🇦 CA
with 12 TerminalsBlack
Fitment notes — WELLS 1P2079
with 12 TerminalsBlackFemale End
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ROSTRA Fits: 4.2L L6 610847
🇺🇸 US 🇨🇦 CA
with 12 Terminal(s)
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ROSTRA Fits: 4.2L L6 610898
🇺🇸 US 🇨🇦 CA
with 8 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1069
🇺🇸 US 🇨🇦 CA
with 12 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1400
🇺🇸 US 🇨🇦 CA
Connector Shape: RectangleWiring Harness Length (mm): 444.5
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WELLS Fits: 4.2L L6 1P2351
🇺🇸 US 🇨🇦 CA
with 2 TerminalsGray
Fitment notes — WELLS 1P2351
with 2 TerminalsGrayFemale End
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WELLS Fits: 4.2L L6 1P2066
🇺🇸 US 🇨🇦 CA
Use Only One Terminalwith 8 Terminals
Fitment notes — WELLS 1P2066
Use Only One Terminalwith 8 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Headlamp Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Headlamp Wiring Harness / Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 LWH106
🇺🇸 US 🇨🇦 CA
Blue StreakHigh Temperature
Fitment notes — STANDARD MOTOR PRODUCTS LWH106
Blue StreakHigh Temperature
with 9005 Bulb
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 LWH107
🇺🇸 US 🇨🇦 CA
Blue StreakHigh Temperature
Fitment notes — STANDARD MOTOR PRODUCTS LWH107
Blue StreakHigh Temperature
with Bulb # 9006
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GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 F90008
🇺🇸 US 🇨🇦 CA
High Temperature
Fitment notes — STANDARD MOTOR PRODUCTS F90008
High Temperature
with 9005 Bulb
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 F90009
🇺🇸 US 🇨🇦 CA
High Temperature
Fitment notes — STANDARD MOTOR PRODUCTS F90009
High Temperature
with 9006 or 9006XS Bulb
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This table covers the wiring-harness connectors at the Headlamp. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Heater Air Door Actuator Connector

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 4.2L L6 645541
🇺🇸 US 🇨🇦 CA
6 Way Female with LeadsRecirculation
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FOUR SEASONS Fits: 4.2L L6 37280
🇺🇸 US 🇨🇦 CA
Fits 6 Terminal MaleBlendor 6 Terminal Male
Fitment notes — FOUR SEASONS 37280
Fits:
6 Terminal MaleBlendor 6 Terminal MaleMode
or:
6 Terminal MaleRecirculation
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GM GENUINE Fits: 4.2L L6 PT319
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT319
Black
Fits:
6-Way Femalewith LeadsRecirculationor Defrost6-Way Femalewith LeadsMode
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1112
🇺🇸 US 🇨🇦 CA
Length (In): 1Black
Fitment notes — STANDARD MOTOR PRODUCTS S1112
Length (In): 1Black
Fits:
Mode
or:
Recirculationor with 6 Terminal(s)Blend
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1059
🇺🇸 US 🇨🇦 CA
Wire Gauge (GA): 16, 20
Fitment notes — STANDARD MOTOR PRODUCTS S1059
Wire Gauge (GA): 16, 20
Color Code Black and Bluewith 12 Female TerminalsBlend
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This table covers the harness connectors at the Heater Air Door Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

High Mount Brake Light Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2726
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2726
Black
with Leads, Square2-Way Malewith LeadsSquare
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1611
🇺🇸 US 🇨🇦 CA
Connector Shape: SquareGender: Female
Fitment notes — STANDARD MOTOR PRODUCTS S1611
Connector Shape: SquareGender: Femaleblack
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WELLS Fits: 4.2L L6 1P1900
🇺🇸 US 🇨🇦 CA
with 2 Terminals
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This table covers the harness connectors at the High Mount Brake Light. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

High Mount Brake Light Relay Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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This table covers the harness connectors at the High Mount Brake Light Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Hood Ajar Indicator Switch Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645158
🇺🇸 US 🇨🇦 CA
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GM GENUINE Fits: 4.2L L6 PT2830
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2830
Black
BlackAccepts 1.5mm Terms2-Way FemaleMetri-Pack 150 Serieswith Leads
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This table covers the harness connectors at the Hood Ajar Indicator Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Horn Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645589
🇺🇸 US 🇨🇦 CA
2 Way Female with Leads
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GM GENUINE Fits: 4.2L L6 PT3910
🇺🇸 US 🇨🇦 CA
Gray2-Way Female
Fitment notes — GM GENUINE PT3910
Gray2-Way Femalewith Leads
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WELLS Fits: 4.2L L6 1P1044
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1044
Connector Shape: OblongTerminal Quantity: 2Wiring Harness Length: 9.0 In
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This table covers the harness connectors at the Horn. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

HVAC Control Switch / Panel Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2882
🇺🇸 US 🇨🇦 CA
Shape: SquareBlack
Fitment notes — GM GENUINE PT2882
Shape: SquareBlack
Fits:
BLACK8-WAY FEMALEwith Leads
or:
FrontBlackDual Zone Climate Control with Manual Controls (blue/Red dials only)8-Way Femalewith Leads2 Rows of 4
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BWD/NIEHOFF Fits: 4.2L L6 PT610
🇺🇸 US 🇨🇦 CA
AT VARIABLE SPEED BLOWER CONTROLLER MODULE
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GM GENUINE Fits: 4.2L L6 PT265
🇺🇸 US 🇨🇦 CA
BlackShape: Rectangular
Fitment notes — GM GENUINE PT265
BlackShape: Rectangular
BLACK8-WAY FEMALEwith Leads
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GM GENUINE Fits: 4.2L L6 PT3799
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3799
Black
RWDTraction Control (NW7),(47I)6-Way Malewith Leads1.5MM2
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1109
🇺🇸 US 🇨🇦 CA
Splice Connectors Included: YesBlack
Fitment notes — STANDARD MOTOR PRODUCTS S1109
Splice Connectors Included: YesBlack
blackwith 8 Female Terminals
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This table covers the harness connectors at the HVAC Control Switch / Panel. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

HVAC Temperature Control Relay Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S803
🇺🇸 US 🇨🇦 CA
Connector Shape: SquareWire Gauge (GA): 12, 14
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON164
🇺🇸 US 🇨🇦 CA
Terminal Gender: FemaleTerminal Quantity: 5
Fitment notes — UNITED MOTOR PRODUCTS CON164
Terminal Gender: FemaleTerminal Quantity: 5Terminal Type: Blade
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ACDELCO Fits: 4.2L L6 PT2371
🇺🇸 US 🇨🇦 CA
GoldShape: Square
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FOUR SEASONS Fits: 4.2L L6 37232
🇺🇸 US 🇨🇦 CA
5 Terminal MaleMini Terminal
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ROSTRA Fits: 4.2L L6 610138
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4655
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Square
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This table covers the harness connectors at the HVAC Temperature Control Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Idle Air Control (IAC) Valve Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645405
🇺🇸 US 🇨🇦 CA
4 Way Female with Leads
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This table covers the harness connectors at the Idle Air Control (IAC) Valve. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Ignition Coil Connector

Brand Part Number Markets Notes Buy
WALKER PRODUCTS Popular Fits: 4.2L L6 2701086
🇺🇸 US 🇨🇦 CA
Includes Boot and Spring
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GM GENUINE Fits: 4.2L L6 PT1496
🇺🇸 US 🇨🇦 CA
4 speed Automatic trans.3-WAY FEMALE BLACK
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S953
🇺🇸 US 🇨🇦 CA
Color Code Black and Purplewith 3 Female Terminals
View on
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON218
🇺🇸 US 🇨🇦 CA
with 3 Female Terminals
View on
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WELLS Fits: 4.2L L6 1P1607
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Ignition Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Inline Connector

Brand Part Number Markets Notes Buy
ROSTRA Popular Fits: 4.2L L6 610789
🇺🇸 US 🇨🇦 CA
with 2 Terminal(s)with 1 Male Connectors
Fitment notes — ROSTRA 610789
with 2 Terminal(s)with 1 Male ConnectorsTo Engine Harness
View on
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WELLS Popular Fits: 4.2L L6 1P2070
🇺🇸 US 🇨🇦 CA
Fits To Fuel Injector Harnesswith 8 Terminals
Fitment notes — WELLS 1P2070
Fits:
To Fuel Injector Harnesswith 8 TerminalsBlackwith Female Connectoror To Rear License Plate Lampwith 8 TerminalsBlackwith Female Connector
View on
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WELLS Popular Fits: 4.2L L6 1P2389
🇺🇸 US 🇨🇦 CA
To Transfer Case Shift Control Harnesswith 5 Terminals
Fitment notes — WELLS 1P2389
To Transfer Case Shift Control Harnesswith 5 TerminalsBlackwith Female Connector
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WELLS Fits: 4.2L L6 1P1958
🇺🇸 US 🇨🇦 CA
To Air Bag Harnesswith 2 Terminals
Fitment notes — WELLS 1P1958
To Air Bag Harnesswith 2 TerminalsYellowFemale End
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WELLS Fits: 4.2L L6 1P2563
🇺🇸 US 🇨🇦 CA
To Instrument Panel Harnesswith 4 Terminals
Fitment notes — WELLS 1P2563
To Instrument Panel Harnesswith 4 TerminalsBlackwith Female Connector
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WELLS Fits: 4.2L L6 1P1945
🇺🇸 US 🇨🇦 CA
Fits To Rear Door Harnesswith 10 Terminals
Fitment notes — WELLS 1P1945
Fits:
To Rear Door Harnesswith 10 TerminalsBlackFemale Endor To Front Door Harnesswith 10 TerminalsBlackFemale End
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WELLS Fits: 4.2L L6 1P2363
🇺🇸 US 🇨🇦 CA
To Body Harness9 Terminal, Black, Female Connector, with 12 Cavities
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WELLS Fits: 4.2L L6 1P3311
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
Fitment notes — WELLS 1P3311
Terminal Quantity: 8Wire Gauge Measurement: 12 GA.
to Transfer Case Shift Control Harness, with Two Speed Push Button Control
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WELLS Fits: 4.2L L6 1P1946
🇺🇸 US 🇨🇦 CA
Fits To Front Door Harnesswith 7 Terminals
Fitment notes — WELLS 1P1946
Fits:
To Front Door Harnesswith 7 TerminalsBlackwith Female Connectoror To Rear Door Harnesswith 7 TerminalsBlackwith Female Connector
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WELLS Fits: 4.2L L6 1P2613
🇺🇸 US 🇨🇦 CA
To Interi
Fitment notes — WELLS 1P2613
To Interi
or:
Rear View Mirror, with Compasswith 16 TerminalsNatural or WhiteFemale End
View on
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WELLS Fits: 4.2L L6 1P2092
🇺🇸 US 🇨🇦 CA
To Vehicle Headliner From Overhead Console Harnesswith 16 Terminals
Fitment notes — WELLS 1P2092
To Vehicle Headliner From Overhead Console Harnesswith 16 TerminalsBlackMale EndRectangular Connector
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WELLS Fits: 4.2L L6 1P2091
🇺🇸 US 🇨🇦 CA
To Instrument Panel Harnesswith 16 Terminals
Fitment notes — WELLS 1P2091
To Instrument Panel Harnesswith 16 TerminalsBlackMale Endwith Oval Connector
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This table covers the harness connectors at the Inline. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Inside Rear View Mirror Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1404
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1404
Black
16-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1244
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Inside Rear View Mirror. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Instrument Panel Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2882
🇺🇸 US 🇨🇦 CA
Shape: SquareBlack
Fitment notes — GM GENUINE PT2882
Shape: SquareBlack
BLACK8-WAY FEMALEwith Leads
View on
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GM GENUINE Popular Fits: 4.2L L6 PT1416
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1416
Black
16-Way Malewith LeadsGT1501.75" Wide
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DORMAN Fits: 4.2L L6 645622
🇺🇸 US 🇨🇦 CA
Yellow
Fitment notes — DORMAN 645622
Yellow
4 Way Female with Leads
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GM GENUINE Fits: 4.2L L6 PT1344
🇺🇸 US 🇨🇦 CA
YellowFrom Steering Column Harness
Fitment notes — GM GENUINE PT1344
YellowFrom Steering Column Harness4-Way Femalewith LeadsMetri-Pack 280
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GM GENUINE Fits: 4.2L L6 PT3799
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3799
Black
6-Way Malewith Leads1.5MM2
View on
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WELLS Fits: 4.2L L6 1P1864
🇺🇸 US 🇨🇦 CA
Theft Deterrent IndicatorInstrument Lamp Connector
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This table covers the harness connectors at the Instrument Panel. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Instrument Panel Dimmer Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT382
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT382
Black
Square4-Way Femalewith Leads
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1069
🇺🇸 US 🇨🇦 CA
with 12 Female Terminals
View on
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This table covers the harness connectors at the Instrument Panel Dimmer Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Interior Light Switch Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610754
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P1875
🇺🇸 US 🇨🇦 CA
Front Left
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WELLS Fits: 4.2L L6 1P2083
🇺🇸 US 🇨🇦 CA
Front Right
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This table covers the harness connectors at the Interior Light Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Keyless Entry Module / Receiver Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1117
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
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This table covers the harness connectors at the Keyless Entry Module / Receiver. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Knock / Detonation Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2652
🇺🇸 US 🇨🇦 CA
Natural2-Way Female
Fitment notes — GM GENUINE PT2652
Natural2-Way Femalewith Leads
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MOTORAD Fits: 4.2L L6 1EC130
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S934
🇺🇸 US 🇨🇦 CA
Contact Terminal Material: Metal
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON191
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
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WELLS Fits: 4.2L L6 1P1571
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Knock / Detonation Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

License Plate Lamp Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645534
🇺🇸 US 🇨🇦 CA
2 Way Female with Leads
View on
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GM GENUINE Fits: 4.2L L6 PT3910
🇺🇸 US 🇨🇦 CA
Gray2-Way Female
Fitment notes — GM GENUINE PT3910
Gray2-Way Femalewith Leads
View on
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GM GENUINE Fits: 4.2L L6 PT3707
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3707
Black
BLACK8-WAY FEMALEwith Leads
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WELLS Fits: 4.2L L6 1P1044
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1044
Connector Shape: OblongTerminal Quantity: 2Wiring Harness Length: 9.0 In
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This table covers the harness connectors at the License Plate Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Liftgate Harness Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT146
Black
Black2-Way Femalewith LeadsSquare
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GM GENUINE Fits: 4.2L L6 PT1032
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT1032
Black
BLACK6-WAY FEMALEwith Leads
View on
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This table covers the harness connectors at the Liftgate Harness. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Liftgate Release Relay Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P1184
🇺🇸 US 🇨🇦 CA
Wiring Harness Length: 7.0 In
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This table covers the harness connectors at the Liftgate Release Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Manifold Pressure (MAP) Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT1799
🇺🇸 US 🇨🇦 CA
GRAY3-WAY FEMALE
Fitment notes — GM GENUINE PT1799
GRAY3-WAY FEMALEwith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4155
🇺🇸 US 🇨🇦 CA
Handypack
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S952
🇺🇸 US 🇨🇦 CA
View on
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON199
🇺🇸 US 🇨🇦 CA
View on
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WALKER PRODUCTS Fits: 4.2L L6 2701044
🇺🇸 US 🇨🇦 CA
Includes O-Ring, Seal
View on
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This table covers the harness connectors at the Manifold Pressure (MAP) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Mass Air Flow (MAF) Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2785
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2785
Black
5-Way Femalewith Leads
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON17
🇺🇸 US 🇨🇦 CA
with 5 Female Terminalswith Black and Purple Connector
View on
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DORMAN Fits: 4.2L L6 645500
🇺🇸 US 🇨🇦 CA
Wiring Harness Length: 17.25 InBlack
Fitment notes — DORMAN 645500
Wiring Harness Length: 17.25 InBlack
5 WireRound Connector
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ROSTRA Fits: 4.2L L6 610122
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4796
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP4796
Handypack
Color Code Black and Purplewith 5 Female Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1262
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 5
Fitment notes — STANDARD MOTOR PRODUCTS S1262
Terminal Quantity: 5
Color Code Black and Purplewith 5 Female Terminals
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WALKER PRODUCTS Fits: 4.2L L6 2701134
🇺🇸 US 🇨🇦 CA
Black and Purple5 Terminal Female
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WELLS Fits: 4.2L L6 1P2072
🇺🇸 US 🇨🇦 CA
with 5 TerminalsBlack
Fitment notes — WELLS 1P2072
with 5 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Mass Air Flow (MAF) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Microphone Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2726
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT2726
Black
Mobile Phone Microphonewith Leads, SquareGPS 1 Vehicle Communication System (UE1)2-Way Male
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This table covers the harness connectors at the Microphone. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Multi-Function Switch Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P1651
🇺🇸 US 🇨🇦 CA
with 8 Terminals
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This table covers the harness connectors at the Multi-Function Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Neutral Safety Switch / Range Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1516
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Neutral Safety Switch / Range Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Oil Level Sensor Connector

Brand Part Number Markets Notes Buy
ROSTRA Popular Fits: 4.2L L6 610108
🇺🇸 US 🇨🇦 CA
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON90
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2Weather Resistant: No
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ACDELCO Fits: 4.2L L6 PT2307
🇺🇸 US 🇨🇦 CA
GoldShape: Rectangle
Fitment notes — ACDELCO PT2307
GoldShape: RectangleTerminal Quantity: 2
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4720
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP4720
HandypackConnector Shape: OvalIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Backing Plate and SensorHarness Lengthinches: 10.25Length (In): 1Terminal Type: BladeWiring Harness Length (mm): 304.8Black
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S575
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalHarness Length
Fitment notes — STANDARD MOTOR PRODUCTS S575
Connector Shape: OvalHarness Lengthincludes ABS Wheel Speed Sensor Wire Harness, Backing Plate and Sensorinches: 10.25Length (In): 1Number of Splice Connectors Included: 0Terminal Gender: FemaleTerminal Type: BladeWiring Harness Length (mm): 304.8Black
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WALKER PRODUCTS Fits: 4.2L L6 2701130
🇺🇸 US 🇨🇦 CA
Terminal Gender: MaleWiring Harness Length: 180.00 mm
Fitment notes — WALKER PRODUCTS 2701130
Terminal Gender: MaleWiring Harness Length: 180.00 mmIncludes Backing Plate and Sensor
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WELLS Fits: 4.2L L6 1P1362
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongTerminal Quantity: 2
Fitment notes — WELLS 1P1362
Connector Shape: OblongTerminal Quantity: 2Terminal Type: BladeWiring Harness Length: 7.0 In
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This table covers the harness connectors at the Oil Level Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Oil Pressure Sender / Switch Connector

Brand Part Number Markets Notes Buy
SKP Popular Fits: 4.2L L6 SKTX3A
🇺🇸 US 🇨🇦 CA
Fits Blackor 2 Terminal Female
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 HP4440
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP4440
Handypack
Color Code Black and Purplewith 3 Female Terminals
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ACDELCO Fits: 4.2L L6 PT2319
🇺🇸 US 🇨🇦 CA
GoldTerminal Gender: Female
Fitment notes — ACDELCO PT2319
GoldTerminal Gender: Female
with 3 Female TerminalsColor Code Black and Purple
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DORMAN Fits: 4.2L L6 645785
🇺🇸 US 🇨🇦 CA
3 Way Female Connector, Black
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GM GENUINE Fits: 4.2L L6 PT2783
🇺🇸 US 🇨🇦 CA
LT Green4-Way Female
Fitment notes — GM GENUINE PT2783
LT Green4-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S955
🇺🇸 US 🇨🇦 CA
Greenwith 2 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S619
🇺🇸 US 🇨🇦 CA
Connector Shape: RoundTerminal Type: Blade
Fitment notes — STANDARD MOTOR PRODUCTS S619
Connector Shape: RoundTerminal Type: BladeWeather Resistant: YESWire Gauge (GA): 18
Color Code Black and Purplewith 3 Female Terminals
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON110
🇺🇸 US 🇨🇦 CA
with 3 Female Terminalswith Black and Purple Connector
Fitment notes — UNITED MOTOR PRODUCTS CON110
with 3 Female Terminalswith Black and Purple Connectorwith Round Connector
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WALKER PRODUCTS Fits: 4.2L L6 2701045
🇺🇸 US 🇨🇦 CA
Terminal Type: Pin
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WELLS Fits: 4.2L L6 1P1534
🇺🇸 US 🇨🇦 CA
with Light
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This table covers the harness connectors at the Oil Pressure Sender / Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

On-Board Diagnostic (OBD) Port Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1101
🇺🇸 US 🇨🇦 CA
Gray12-Way Female
Fitment notes — GM GENUINE PT1101
Gray12-Way Femalewith Leads and CapGT150
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1796
🇺🇸 US 🇨🇦 CA
Black
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WELLS Fits: 4.2L L6 1P1474
🇺🇸 US 🇨🇦 CA
Universal Type
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This table covers the harness connectors at the On-Board Diagnostic (OBD) Port. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Oxygen (O2) Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
Inline to Engine HarnessOVAL
Fitment notes — GM GENUINE PT2629
Inline to Engine HarnessOVAL2-WAY FEMALE BLACK
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON14
🇺🇸 US 🇨🇦 CA
with 4 Female Terminalswith Gray and Blue Connector
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Inline To Engine HarnessOval2-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT919
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT919
Black
with Leads4-Way Male
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GM GENUINE Fits: 4.2L L6 PT1417
🇺🇸 US 🇨🇦 CA
Fits Inline To Engine HarnessGray
Fitment notes — GM GENUINE PT1417
Fits:
Inline To Engine HarnessGray4-Way FemaleMetri-Pack 150with Leadsor Inline To Engine HarnessGrayElectric Air Injection Reactor (K18)4-Way FemaleMetri-Pack 150with Leads
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GM GENUINE Fits: 4.2L L6 PT1069
🇺🇸 US 🇨🇦 CA
SecondaryGray
Fitment notes — GM GENUINE PT1069
SecondaryGray4-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S817
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S817
Black
Downstream Sensorwith 4 Male Terminals
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S927
🇺🇸 US 🇨🇦 CA
Upstream SensorGray
Fitment notes — STANDARD MOTOR PRODUCTS S927
Upstream SensorGraywith 4 Female Terminals
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WELLS Fits: 4.2L L6 1P1282
🇺🇸 US 🇨🇦 CA
with 4 TerminalsBlack
Fitment notes — WELLS 1P1282
with 4 TerminalsBlackSquare Typewith Female Connector
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WELLS Fits: 4.2L L6 1P1690
🇺🇸 US 🇨🇦 CA
with 4 TerminalsGray
Fitment notes — WELLS 1P1690
with 4 TerminalsGraywith Male Connectorwith TRIANGLE Socket
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This table covers the harness connectors at the Oxygen (O2) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Parking / Turn Signal Lamp Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1451
🇺🇸 US 🇨🇦 CA
3-WAY FEMALE GRAY
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1407
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Parking / Turn Signal Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Parking Brake Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT242
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT242
Black
Black1-Way Femalewith LeadsUnsealed
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This table covers the harness connectors at the Parking Brake Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Brake Booster Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 1306
🇺🇸 US 🇨🇦 CA
For Zenith 1 Bbl Carb
Fitment notes — STANDARD MOTOR PRODUCTS 1306
For Zenith 1 Bbl Carb
Sensor Connector
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This table covers the harness connectors at the Power Brake Booster. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Brake Booster Sensor Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610957
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P1717
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Power Brake Booster Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Distribution Block Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P2282
🇺🇸 US 🇨🇦 CA
with 2 Terminal(s)Black
Fitment notes — WELLS 1P2282
with 2 Terminal(s)Blackwith Female ConnectorAccessory Wiring Junction Block
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This table covers the harness connectors at the Power Distribution Block. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Seat Control Module Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1555
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P2284
🇺🇸 US 🇨🇦 CA
with 16 TerminalsBlack
Fitment notes — WELLS 1P2284
with 16 TerminalsBlackFemale End
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This table covers the harness connectors at the Power Seat Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Seat Motor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT1204
🇺🇸 US 🇨🇦 CA
Yellow2-Way Female
Fitment notes — GM GENUINE PT1204
Yellow2-Way FemaleMP150with Leads
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WELLS Popular Fits: 4.2L L6 1P1958
🇺🇸 US 🇨🇦 CA
with 2 TerminalsYellow
Fitment notes — WELLS 1P1958
with 2 TerminalsYellowFemale End
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ROSTRA Fits: 4.2L L6 610629
🇺🇸 US 🇨🇦 CA
View on
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ROSTRA Fits: 4.2L L6 610971
🇺🇸 US 🇨🇦 CA
Connects to Seat Recline Motor
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1341
🇺🇸 US 🇨🇦 CA
Weather Resistant: No
Fitment notes — STANDARD MOTOR PRODUCTS S1341
Weather Resistant: No
Connects to Power Seat Harness
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WELLS Fits: 4.2L L6 1P1941
🇺🇸 US 🇨🇦 CA
Connects to Seat Recline Motor
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This table covers the harness connectors at the Power Seat Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Seat Switch Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610783
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Power Seat Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Window Control Module Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT548
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT548
Black
Rectangle4-Way Femalewith Leads
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HOLSTEIN Fits: 4.2L L6 2HAR0024
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1141
🇺🇸 US 🇨🇦 CA
Black
View on
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This table covers the harness connectors at the Power Window Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Power Window Switch Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT3835
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3835
Black
Rearindex tab center cavity And2-Way Femalewith Leads1.5MM2
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WELLS Popular Fits: 4.2L L6 1P1012
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
Fitment notes — WELLS 1P1012
Terminal Gender: Female
For Quarter Flip Windowwith 2 TerminalsBlackwith Female Connector
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ACDELCO Fits: 4.2L L6 PT2372
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO PT2372
Gold
with 8 Female Terminalsbrown
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BWD/NIEHOFF Fits: 4.2L L6 PT639
🇺🇸 US 🇨🇦 CA
Fits Electric Window ConnectorAt Switch
Fitment notes — BWD/NIEHOFF PT639
Fits:
Electric Window ConnectorAt SwitchFront Rightor Electric Window ConnectorAt Control Module
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GM GENUINE Fits: 4.2L L6 PT1208
🇺🇸 US 🇨🇦 CA
Brown8-Way Female
Fitment notes — GM GENUINE PT1208
Brown8-Way FemaleGT280with Leads
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HOLSTEIN Fits: 4.2L L6 2HAR0024
🇺🇸 US 🇨🇦 CA
Front Right
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1141
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — STANDARD MOTOR PRODUCTS S1141
Black
Front Right
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S804
🇺🇸 US 🇨🇦 CA
Length (In): 0.875Wire Gauge (GA): 14
Fitment notes — STANDARD MOTOR PRODUCTS S804
Length (In): 0.875Wire Gauge (GA): 14Wiring Harness Length (mm): 215.9
brownwith 8 Female Terminals
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WELLS Fits: 4.2L L6 1P1875
🇺🇸 US 🇨🇦 CA
Front Left
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This table covers the harness connectors at the Power Window Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Radiator Fan Motor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT2712
🇺🇸 US 🇨🇦 CA
BlackTerminal Type: Pin
Fitment notes — GM GENUINE PT2712
BlackTerminal Type: Pin
BLACK6-WAY FEMALEwith Leads
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S1479
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalLength (In): 1.125
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DORMAN Fits: 4.2L L6 645595
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — DORMAN 645595
Black
6 Way Female with Leads
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DORMAN Fits: 4.2L L6 645176
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — DORMAN 645176
Black
3 Way Female with Leads
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FAMOUS BRAND Fits: 4.2L L6 PTA1167
🇺🇸 US 🇨🇦 CA
Radiator And Condenser Fan ConnectorAT COOLING FAN MOTOR
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON23
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P1599
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Radiator Fan Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Radiator Fan Relay Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S803
🇺🇸 US 🇨🇦 CA
Connector Shape: SquareWire Gauge (GA): 12, 14
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UNITED MOTOR PRODUCTS Popular Fits: 4.2L L6 CON164
🇺🇸 US 🇨🇦 CA
Terminal Gender: FemaleTerminal Quantity: 5
Fitment notes — UNITED MOTOR PRODUCTS CON164
Terminal Gender: FemaleTerminal Quantity: 5Terminal Type: Blade
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ACDELCO Fits: 4.2L L6 PT2371
🇺🇸 US 🇨🇦 CA
GoldShape: Square
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FOUR SEASONS Fits: 4.2L L6 37232
🇺🇸 US 🇨🇦 CA
5 Terminal MaleMini Terminal
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ROSTRA Fits: 4.2L L6 610138
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP4655
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Square
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This table covers the harness connectors at the Radiator Fan Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Radio Connector

Brand Part Number Markets Notes Buy
METRA Fits: 4.2L L6 7120031
🇺🇸 US 🇨🇦 CA
OEM Radio HarnessFor OEM Radio
Fitment notes — METRA 7120031
OEM Radio HarnessFor OEM Radio
Plugs Into OEM Radio24-PinPower 4-SpeakersFully Terminated
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METRA Fits: 4.2L L6 702054
🇺🇸 US 🇨🇦 CA
TURBOWireWire Harness
Fitment notes — METRA 702054
TURBOWireWire HarnessFor Aftermarket Radio
204" LongAmp Bypass HarnessWill Not Keep Onstar Retain Warning Chimeswithout Bose or Monsoon Systems
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1059
🇺🇸 US 🇨🇦 CA
Wire Gauge (GA): 16, 20
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This table covers the harness connectors at the Radio. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Rain Sensor Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P3399
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Rain Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Repair Harness

Brand Part Number Markets Notes Buy
ROSTRA Popular Fits: 4.2L L6 610317
🇺🇸 US 🇨🇦 CA
with 6 Terminal(s)with 1 Female Connectors
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ATP Fits: 4.2L L6 CE6
🇺🇸 US 🇨🇦 CA
View on
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ATP Fits: 4.2L L6 CE006
🇺🇸 US 🇨🇦 CA
Trans. code 4L60-EExternal Wire Harness Repair Kit
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ATP Fits: 4.2L L6 JE25
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P1579
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Repair harnesses.

Ride Height Sensor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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This table covers the harness connectors at the Ride Height Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Seat Belt Pretensioner Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT1204
🇺🇸 US 🇨🇦 CA
Yellow2-Way Female
Fitment notes — GM GENUINE PT1204
Yellow2-Way FemaleMP150with Leads
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This table covers the harness connectors at the Seat Belt Pretensioner. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Seat Belt Switch Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1366
🇺🇸 US 🇨🇦 CA
Wiring Harness Length (mm): 457.2
Fitment notes — STANDARD MOTOR PRODUCTS S1366
Wiring Harness Length (mm): 457.2
Harness Connector
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This table covers the harness connectors at the Seat Belt Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Self-Leveling Unit Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT3707
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3707
Black
BLACK8-WAY FEMALEwith Leads
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WELLS Popular Fits: 4.2L L6 1P2005
🇺🇸 US 🇨🇦 CA
Rearwith 2 Terminals
Fitment notes — WELLS 1P2005
Rearwith 2 TerminalsBlackwith Female Connector
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ROSTRA Fits: 4.2L L6 610167
🇺🇸 US 🇨🇦 CA
with 2 Terminal(s)
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1010
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalBlack
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1501
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangle
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON2
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
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WELLS Fits: 4.2L L6 1P2070
🇺🇸 US 🇨🇦 CA
with 8 TerminalsBlack
Fitment notes — WELLS 1P2070
with 8 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Self-Leveling Unit. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Shift Interlock Solenoid Connector

Brand Part Number Markets Notes Buy
BWD/NIEHOFF Fits: 4.2L L6 PT1197
🇺🇸 US 🇨🇦 CA
Shift Lock ConnectorAT SWITCH
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GM GENUINE Fits: 4.2L L6 PT3923
🇺🇸 US 🇨🇦 CA
Contains Connector Only
Fitment notes — GM GENUINE PT3923
Contains Connector Only
Gray6-Way Femalewith Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1699
🇺🇸 US 🇨🇦 CA
Length (In): 0.75Number of Splice Connectors Included: 6
Fitment notes — STANDARD MOTOR PRODUCTS S1699
Length (In): 0.75Number of Splice Connectors Included: 6Weather Resistant: NoWire Gauge (GA): 18Wiring Harness Length (In): 17Wiring Harness Length (mm): 431.8
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON35
🇺🇸 US 🇨🇦 CA
View on
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This table covers the harness connectors at the Shift Interlock Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Shift Solenoid Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1699
🇺🇸 US 🇨🇦 CA
Length (In): 0.75Number of Splice Connectors Included: 6
Fitment notes — STANDARD MOTOR PRODUCTS S1699
Length (In): 0.75Number of Splice Connectors Included: 6Weather Resistant: NoWire Gauge (GA): 18Wiring Harness Length (In): 17Wiring Harness Length (mm): 431.8
Shift Control Solenoid
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This table covers the harness connectors at the Shift Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Side Marker Lamp Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
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ROSTRA Fits: 4.2L L6 610167
🇺🇸 US 🇨🇦 CA
Front
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WELLS Fits: 4.2L L6 1P2005
🇺🇸 US 🇨🇦 CA
Frontwith 2 Terminals
Fitment notes — WELLS 1P2005
Frontwith 2 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Side Marker Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Speaker Amplifier Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610637
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P2207
🇺🇸 US 🇨🇦 CA
with 6 TerminalsBlack
Fitment notes — WELLS 1P2207
with 6 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Speaker Amplifier. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Speaker Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT3835
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3835
Black
index tab center cavity And, with Locking Tab2-Way Femalewith Leads1.5MM2
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METRA Popular Fits: 4.2L L6 724568
🇺🇸 US 🇨🇦 CA
TURBOWireSpeaker Harness
Fitment notes — METRA 724568
TURBOWireSpeaker Harness
2-Pin Speaker ConnectorRequires 1 Kit Per Pair Speakers
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GM GENUINE Fits: 4.2L L6 PT456
🇺🇸 US 🇨🇦 CA
Blue2-Way Female
Fitment notes — GM GENUINE PT456
Blue2-Way Femalewith Leads
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GM GENUINE Fits: 4.2L L6 PT601
🇺🇸 US 🇨🇦 CA
I/PGreen
Fitment notes — GM GENUINE PT601
I/PGreen'Bose' Premium Enhanced Audio Speaker System (UQA)2-Way Femalewith Leads
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WELLS Fits: 4.2L L6 1P1888
🇺🇸 US 🇨🇦 CA
with Green Connector
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WELLS Fits: 4.2L L6 1P1886
🇺🇸 US 🇨🇦 CA
Wiring Harness Length: 16.0 In
Fitment notes — WELLS 1P1886
Wiring Harness Length: 16.0 In
Blue
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WELLS Fits: 4.2L L6 1P1012
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
Fitment notes — WELLS 1P1012
Terminal Gender: Female
with Center Cavity Index Tabwith 2 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Speaker. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Speed Sensor Connector

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 TX3A
🇺🇸 US 🇨🇦 CA
Wiring Harness Length (mm): 158.75Black
Fitment notes — STANDARD MOTOR PRODUCTS TX3A
Wiring Harness Length (mm): 158.75Black
Transmission Output
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WELLS Popular Fits: 4.2L L6 1P1006
🇺🇸 US 🇨🇦 CA
Connector Shape: OblongWiring Harness Length: 9.5 In
Fitment notes — WELLS 1P1006
Connector Shape: OblongWiring Harness Length: 9.5 In
Fits:
RWDTransmission SpeedAutomatic Trans.or with 2 Terminal(s)Transmission Output
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ACDELCO Fits: 4.2L L6 PT2386
🇺🇸 US 🇨🇦 CA
GoldShape: Square
Fitment notes — ACDELCO PT2386
GoldShape: Square
Transmission Output
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GM GENUINE Fits: 4.2L L6 PT1798
🇺🇸 US 🇨🇦 CA
GrayFront, Rear
Fitment notes — GM GENUINE PT1798
GrayFront, Rear2-Way FemaleGT150 Sealedwith Leads
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SKP Fits: 4.2L L6 SKTX3A
🇺🇸 US 🇨🇦 CA
Fits Blackor 2 Terminal Female
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 HP3840
🇺🇸 US 🇨🇦 CA
HandypackWiring Harness Length (mm): 158.75
Fitment notes — STANDARD MOTOR PRODUCTS HP3840
HandypackWiring Harness Length (mm): 158.75black
Transmission Output
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON203
🇺🇸 US 🇨🇦 CA
Transmission Output
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WALKER PRODUCTS Fits: 4.2L L6 2111500
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 2Includes O-Ring
Fitment notes — WALKER PRODUCTS 2111500
Terminal Quantity: 2Includes O-Ring
RWD
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This table covers the harness connectors at the Speed Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Steering Column Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 86532982
🇺🇸 US 🇨🇦 CA
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This table covers the harness connectors at the Steering Column. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Sun Visor Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT146
Black
Black2-Way Femalewith LeadsSquare
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This table covers the harness connectors at the Sun Visor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Sunroof / Sunshade Switch Connector

Brand Part Number Markets Notes Buy
ACDELCO Fits: 4.2L L6 PT2372
🇺🇸 US 🇨🇦 CA
Gold
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GM GENUINE Fits: 4.2L L6 PT1208
🇺🇸 US 🇨🇦 CA
Electric Glass Sliding Sunroof (CF5)Brown
Fitment notes — GM GENUINE PT1208
Electric Glass Sliding Sunroof (CF5)Brown8-Way FemaleGT280with Leads
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S804
🇺🇸 US 🇨🇦 CA
Length (In): 0.875Wire Gauge (GA): 14
Fitment notes — STANDARD MOTOR PRODUCTS S804
Length (In): 0.875Wire Gauge (GA): 14Wiring Harness Length (mm): 215.9
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WELLS Fits: 4.2L L6 1P1237
🇺🇸 US 🇨🇦 CA
Wire Quantity: 11Wiring Harness Length: 17.0 In
Fitment notes — WELLS 1P1237
Wire Quantity: 11Wiring Harness Length: 17.0 In
with 8 Terminals
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This table covers the harness connectors at the Sunroof / Sunshade Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Tail Lamp Assembly Connector

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 4.2L L6 645611
🇺🇸 US 🇨🇦 CA
5 WAY
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FAMOUS BRAND Fits: 4.2L L6 PTA3015
🇺🇸 US 🇨🇦 CA
Tail Lamp Repair Connectorwith 5 Terminal(s)
Fitment notes — FAMOUS BRAND PTA3015
Tail Lamp Repair Connectorwith 5 Terminal(s)with Female ConnectorBlack
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ROSTRA Fits: 4.2L L6 610781
🇺🇸 US 🇨🇦 CA
with 5 Terminal(s)with 1 Female Connectors
Fitment notes — ROSTRA 610781
with 5 Terminal(s)with 1 Female ConnectorsGray
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WELLS Fits: 4.2L L6 1P1604
🇺🇸 US 🇨🇦 CA
with 5 TerminalsGray
Fitment notes — WELLS 1P1604
with 5 TerminalsGraywith Female Connector
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WELLS Fits: 4.2L L6 1P1642
🇺🇸 US 🇨🇦 CA
Fits with 5 TerminalsBlack
Fitment notes — WELLS 1P1642
Fits:
with 5 TerminalsBlackwith Female Connector
or:
LeftTail Lamp Circuit Board Connector
or:
RightTail Lamp Circuit Board Connector
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This table covers the harness connectors at the Tail Lamp Assembly. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Temperature Sender / Sensor Connector

Brand Part Number Markets Notes Buy
ROSTRA Popular Fits: 4.2L L6 610011
🇺🇸 US 🇨🇦 CA
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SKP Popular Fits: 4.2L L6 SKTX3A
🇺🇸 US 🇨🇦 CA
Fits Blackor 2 Terminal Female
View on
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GM GENUINE Fits: 4.2L L6 PT2629
🇺🇸 US 🇨🇦 CA
OVAL2-WAY FEMALE BLACK
View on
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GM GENUINE Fits: 4.2L L6 87815146
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 87815146
Black
Oval2-Way Femalewith Leads
View on
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ROSTRA Fits: 4.2L L6 610167
🇺🇸 US 🇨🇦 CA
with 2 Terminal(s)with 1 Female Connectors
Fitment notes — ROSTRA 610167
with 2 Terminal(s)with 1 Female ConnectorsBlack
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1717
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P2005
🇺🇸 US 🇨🇦 CA
with 2 TerminalsBlack
Fitment notes — WELLS 1P2005
with 2 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Temperature Sender / Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Throttle Actuator Control Module Connector

Brand Part Number Markets Notes Buy
WELLS Fits: 4.2L L6 1P2573
🇺🇸 US 🇨🇦 CA
with 6 Terminals
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This table covers the harness connectors at the Throttle Actuator Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Throttle Control Actuator Connector

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 4.2L L6 PT3707
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE PT3707
Black
8-Way Femalewith Leads
View on
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STANDARD MOTOR PRODUCTS Popular Fits: 4.2L L6 S1745
🇺🇸 US 🇨🇦 CA
Connector Shape: Rectangleblack
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1010
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalBlack
View on
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UNITED MOTOR PRODUCTS Fits: 4.2L L6 CON38
🇺🇸 US 🇨🇦 CA
View on
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WELLS Fits: 4.2L L6 1P2070
🇺🇸 US 🇨🇦 CA
with 8 TerminalsBlack
Fitment notes — WELLS 1P2070
with 8 TerminalsBlackwith Female Connector
View on
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WELLS Fits: 4.2L L6 1P2573
🇺🇸 US 🇨🇦 CA
with 6 Terminals
View on
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This table covers the harness connectors at the Throttle Control Actuator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Throttle Position Sensor (TPS) Connector

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 4.2L L6 PT2712
🇺🇸 US 🇨🇦 CA
BlackTerminal Type: Pin
Fitment notes — GM GENUINE PT2712
BlackTerminal Type: Pin
BLACK6-WAY FEMALEwith Leads
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This table covers the harness connectors at the Throttle Position Sensor (TPS). Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Torque Converter Clutch Solenoid Connector

Brand Part Number Markets Notes Buy
ROSTRA Fits: 4.2L L6 610672
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.2L L6 1P2364
🇺🇸 US 🇨🇦 CA
with 4 TerminalsBlack
Fitment notes — WELLS 1P2364
with 4 TerminalsBlackwith Female Connector
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This table covers the harness connectors at the Torque Converter Clutch Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Traction / Stability Control Module Connector

Brand Part Number Markets Notes Buy
DORMAN Fits: 4.2L L6 645596
🇺🇸 US 🇨🇦 CA
4 Way Female with LeadsBlack Rectangle
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HOLSTEIN Fits: 4.2L L6 2HAR0024
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 S1141
🇺🇸 US 🇨🇦 CA
Black
View on
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This table covers the harness connectors at the Traction / Stability Control Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Adapter Connector

Brand Part Number Markets Notes Buy
CURT Fits: 4.2L L6 57101
🇺🇸 US 🇨🇦 CA
7-Way Round RV To 4-Way Flat Adapter
Fitment notes — CURT 57101
7-Way Round RV To 4-Way Flat Adapter
with Back Up AlarmGM/Ford Plugwith Factory Tow Package
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STANDARD MOTOR PRODUCTS Fits: 4.2L L6 TC555
🇺🇸 US 🇨🇦 CA
Vehicle Connector Adapter6 Way to 4 Way
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This table covers the harness connectors at the Trailer Adapter. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Extension Connector

Brand Part Number Markets Notes Buy
CURT Fits: 4.2L L6 56475
🇺🇸 US 🇨🇦 CA
Custom Wiring Harness Extension
Fitment notes — CURT 56475
Custom Wiring Harness Extension
20"Uscar To Uscarwith Factory Tow Package
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This table covers the harness connectors at the Trailer Extension. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Wire Converter

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.2L L6 TC434
🇺🇸 US 🇨🇦 CA
with Converterwith 4 Way
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This table covers the Trailer Wire converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering.

Buying Electrical Connector Parts for a 2005 Buick Rainier

On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.

  • Match the engine first. Every electrical connector part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Blower Motor Control Module / Resistor Connector and A/C Refrigerant Pressure Switch Connector .

Frequently Asked Questions

How many electrical connector parts fit the 2005 Buick Rainier?

Our catalog currently lists 542 electrical connector parts for the 2005 Buick Rainier across 128 subcategories and 20 brands, covering both the 4.2L L6 and the 5.3L V8. Each part is matched to the engine(s) it fits.

Do electrical connector parts differ between 2005 Buick Rainier engines?

Yes. Every electrical connector part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of electrical connector problems on a 2005 Buick Rainier?

Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2005 Buick Rainier was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2005 Buick Rainier?

First match the engine — each row shows which engine(s) the part fits. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2005 Buick Rainier

Electrical Connector Parts for Other Buick Rainier Years

Switch vehicle or jump to a subcategory

Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.