2004 Buick Lesabre Electrical Switch & Relay Parts

Engine:
3.8L V6

203 Electrical switch & relay parts are listed for the 2004 Buick Lesabre, in 50 part types, covering the 3.8L V6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.

On the 2004 Buick Lesabre, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Radiator Fan Relay (15 parts), Power Window Switch (12 parts) and A/C Compressor Relay (10 parts). The other 47 part types cover the remaining 166 parts.

A/C Compressor Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current MicroControl Relay
View on
Amazon
STANDARD MOTOR PRODUCTS Popular RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
Control Relay
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FOUR SEASONS 36008
🇺🇸 US 🇨🇦 CA
4 PinCompressor Clutch Relay
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GPD 1711351
🇺🇸 US 🇨🇦 CA
Compressor RelayBlack 5-Way Micro
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HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
Fitment notes — HELLA 933332601
5-pin connector
Clutch Relay
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HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
Control Relay
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ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
Control Relay
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ROSTRA 600060
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 Ampere
Fitment notes — ROSTRA 600060
Amperage Rating: 30 Ampere
Cut-Out Relay
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STANDARD MOTOR PRODUCTS RY1757
🇺🇸 US 🇨🇦 CA
Clutch Cut-Off Relay
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WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
Fits:
Control Relayor Cut-Out Relay
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This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

A/C Refrigerant Pressure Switch

Brand Part Number Markets Notes Buy
FOUR SEASONS Popular 20915
🇺🇸 US 🇨🇦 CA
Pressure Switch
Fitment notes — FOUR SEASONS 20915
Pressure Switch
Transducer
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GM GENUINE Popular 1551343
🇺🇸 US 🇨🇦 CA
without Circuit
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GPD 1711513
🇺🇸 US 🇨🇦 CA
Pressure Transducer
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GPD 1711438
🇺🇸 US 🇨🇦 CA
High Side Refrigerant PressureThree Wire
Fitment notes — GPD 1711438
High Side Refrigerant PressureThree WireTransducer
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UAC SW10093C
🇺🇸 US 🇨🇦 CA
Pressure Transducer
Fitment notes — UAC SW10093C
Pressure Transducer
Transducer
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WELLS 1S8929
🇺🇸 US 🇨🇦 CA
Clutch Cycle and Fan ControlCut-Off
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This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

A/C System Relay

Brand Part Number Markets Notes Buy
UAC RE0959C
🇺🇸 US
Custom
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UAC RE8423C
🇺🇸 US 🇨🇦 CA
Replaces 5 Contact Relay
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UAC RE1014C
🇺🇸 US 🇨🇦 CA
Fits or Limited
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ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
Air Conditioning Control Relay
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This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Accessory Delay Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon

This table covers the relays that control the Accessory Delay circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Accessory Power Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-Way, Gray4-WaySquare Casewith Resistor
View on
Amazon
HELLA Popular 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
View on
Amazon
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
View on
Amazon
HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
with 4 Blade Terminals
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
with 4 TerminalsGray
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This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Active Suspension Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
Electronic Control Suspension RelayACTIVE SUSPENSION
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Active Suspension circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Adjustable Shock / Load Leveler Relay

Brand Part Number Markets Notes Buy
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
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ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Adjustable Shock / Load Leveler circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Anti-Theft Relay

Brand Part Number Markets Notes Buy
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
Fitment notes — ACDELCO D1741C
GoldVoltage: 12 VDC
OE No. 12193604
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Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Anti-Theft circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Back Up / Reverse Lamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon

This table covers the relays that control the Back Up / Reverse Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Blower Motor Relay

Brand Part Number Markets Notes Buy
GPD 1711349
🇺🇸 US 🇨🇦 CA
4 Pin Relay
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GPD 1711350
🇺🇸 US 🇨🇦 CA
4 Pin Relay No Shroud
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HELLA 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
View on
Amazon
HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
View on
Amazon

This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Brake Light Switch

Economy

Brand Part Number Markets Notes Buy
BWD/NIEHOFF SL2024
🇺🇸 US 🇨🇦 CA
View on
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ULTRA-POWER SLS292
🇺🇸 US 🇨🇦 CA
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS SLS292
🇺🇸 US 🇨🇦 CA
View on
Amazon
WELLS 1S5139
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Daytime Running Light Relay

Brand Part Number Markets Notes Buy
GM GENUINE D1780C
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE D1780C
Black
Black35AMP5-Way, Hi-Power, with resistor, Unshrouded, Micro, Code 78665 TerminalHigh Current Micro 280
View on
Amazon
ROSTRA 600015
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Shape: Rectangle
View on
Amazon
STANDARD MOTOR PRODUCTS RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
View on
Amazon
WELLS 1R1059
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: NoVoltage: 12.0 VDC
View on
Amazon

This table covers the relays that control the Daytime Running Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Defroster Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
View on
Amazon
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade PinRear
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Dimmer Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS CBS1178
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S3154
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Dome Light Relay

Brand Part Number Markets Notes Buy
ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
AT INTERIOR LIGHT
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This table covers the relays that control the Dome Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Door Jamb Switch

Brand Part Number Markets Notes Buy
DORMAN 931946
🇺🇸 US 🇨🇦 CA
Fits Front Right
Fitment notes — DORMAN 931946
Fits:
Front Right
or:
Rear Right
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This table covers the Door Jamb switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Door Lock Switch

Economy

Brand Part Number Markets Notes Buy
DORMAN 901111
🇺🇸 US 🇨🇦 CA
Fits Front Right
Fitment notes — DORMAN 901111
Fits:
Front Right
or:
Front Left
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VEMO V51730073
🇺🇸 US 🇨🇦 CA
Plug (Connector): 5 Pins
Fitment notes — VEMO V51730073
Plug (Connector): 5 Pins
Front
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
WAI GLOBAL 87121
🇺🇸 US 🇨🇦 CA
Fits Front LeftBlack Rocker
Fitment notes — WAI GLOBAL 87121
Fits:
Front LeftBlack Rocker
or:
Front RightBlack Rocker
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This table covers the Door Lock switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Driving Light Relay

Brand Part Number Markets Notes Buy
ROSTRA 600015
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Shape: Rectangle
View on
Amazon
STANDARD MOTOR PRODUCTS RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
View on
Amazon
WELLS 1R1059
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: NoVoltage: 12.0 VDC
View on
Amazon

This table covers the relays that control the Driving Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Fog / Driving Lamp Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
Fog Lamp Relay
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Fuel Injection Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Fuel Injection circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Fuel Pump / Circuit Opening Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
HELLA Popular 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
View on
Amazon
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
Fitment notes — ACDELCO D1741C
GoldVoltage: 12 VDC
4 Blade Terminal
View on
Amazon
BOSCH 0986AH0115
🇺🇸 US 🇨🇦 CA
Glow Plug Relay
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
with Square Connector
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
with Rectangular Connector
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Hazard Warning Switch

Brand Part Number Markets Notes Buy
WELLS 1S3154
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Hazard Warning switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Headlamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Fits High BeamGray
Fitment notes — GM GENUINE 13500114
Fits:
High BeamGray35AMP4-TerminalHigh Current Microor Low BeamGray35AMP4-TerminalHigh Current Micro
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Headlamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Headlamp Switch

Economy

Brand Part Number Markets Notes Buy
BWD/NIEHOFF HL146
🇺🇸 US 🇨🇦 CA
View on
Amazon
FAMOUS BRAND HGA1005
🇺🇸 US 🇨🇦 CA
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular D1591G
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA Popular 650040
🇺🇸 US 🇨🇦 CA
View on
Amazon
STANDARD MOTOR PRODUCTS HLS1021
🇺🇸 US 🇨🇦 CA
View on
Amazon
WELLS 1S1965
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Horn Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
HELLA Popular 933332571
🇺🇸 US 🇨🇦 CA
30 Amps4-Pin Connector
Fitment notes — HELLA 933332571
30 Amps4-Pin ConnectorColor: Black or Gray
View on
Amazon
BOSCH 0986AH0115
🇺🇸 US 🇨🇦 CA
Glow Plug Relay
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
with 4 Blade Terminals
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
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WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
with 4 TerminalsGraySize- 15mm x 22mm
View on
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This table covers the relays that control the Horn circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Ignition Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
View on
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GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
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HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
Square
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ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
Rectangular
View on
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STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
with 4 TerminalsGraySize- 28mm x 28mm
View on
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WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
with 4 TerminalsGraySize- 15mm x 22mm
View on
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This table covers the relays that control the Ignition circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Ignition Starter Switch

Economy

Brand Part Number Markets Notes Buy
FAMOUS BRAND CSC1471
🇺🇸 US 🇨🇦 CA
Ignition Switch
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS US433
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S5964
🇺🇸 US 🇨🇦 CA
View on
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This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Instrument Panel Cluster Relay

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
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ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
Instrument Panel Relay
View on
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WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
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This table covers the relays that control the Instrument Panel Cluster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Interior Light Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
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This table covers the relays that control the Interior Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Level Control Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
ULTRA-POWER 1R1056
🇺🇸 US 🇨🇦 CA
Fits Automatic Level Control RelayLOAD LEVELER RELAY
Fitment notes — ULTRA-POWER 1R1056
Fits:
Automatic Level Control RelayLOAD LEVELER RELAY
or:
Automatic Level Control RelayRIDE HEIGHT CONTROL RELAY
View on
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WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
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This table covers the relays that control the Level Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Multi-Function Relay

Brand Part Number Markets Notes Buy
BOSCH 0986AH0113
🇺🇸 US 🇨🇦 CA
Multi-Purpose Relay
Fitment notes — BOSCH 0986AH0113
Multi-Purpose Relay
30 Ampswith 5 Terminal Relay
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This table covers the relays that control the Multi-Function circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Neutral Safety Switch / Range Sensor

Brand Part Number Markets Notes Buy
ROSTRA 670583
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS NS635
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S12276
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.

Neutral Safety Switch / Range Sensor Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon

This table covers the relays that control the Neutral Safety Switch / Range Sensor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Oil Pressure Sender / Switch

Economy

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular PS309T
🇺🇸 US 🇨🇦 CA
T-Series
View on
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HOLSTEIN 2OPS0027
🇺🇸 US 🇨🇦 CA
with Gauge
View on
Amazon
UNITED MOTOR PRODUCTS OPS174
🇺🇸 US 🇨🇦 CA
M16 X 1.5 thead
Fitment notes — UNITED MOTOR PRODUCTS OPS174
M16 X 1.5 thead
with Gauge
View on
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WALKER PRODUCTS 2561008
🇺🇸 US 🇨🇦 CA
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
WELLS Popular 1S6772
🇺🇸 US 🇨🇦 CA
with Gauge & Light
View on
Amazon
GPD 1815414
🇺🇸 US 🇨🇦 CA
with Gauge
View on
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STANDARD MOTOR PRODUCTS PS309
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.

Parking Brake Switch

Brand Part Number Markets Notes Buy
ROSTRA 690090
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS DS905
🇺🇸 US 🇨🇦 CA
View on
Amazon
WELLS 1S1930
🇺🇸 US 🇨🇦 CA
Voltage: 12.0 VDC
View on
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WELLS 1S1926
🇺🇸 US 🇨🇦 CA
Voltage: 12.0 2H
View on
Amazon

This table covers the Parking Brake switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Parking Lamp Relay

Brand Part Number Markets Notes Buy
GM GENUINE 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon

This table covers the relays that control the Parking Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Power Seat Switch

Brand Part Number Markets Notes Buy
ROSTRA 660525
🇺🇸 US 🇨🇦 CA
Left8 Way
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This table covers the Power Seat switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Power Steering Relay

Brand Part Number Markets Notes Buy
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon

This table covers the relays that control the Power Steering circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Power Window Switch

Economy

Brand Part Number Markets Notes Buy
FAMOUS BRAND Popular WSC1051
🇺🇸 US 🇨🇦 CA
Front Left
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
GM GENUINE Popular 25654433
🇺🇸 US 🇨🇦 CA
Front LeftIncludes Lockout Switch
View on
Amazon
WAI GLOBAL Popular 387128
🇺🇸 US 🇨🇦 CA
Front Right1 Button
Fitment notes — WAI GLOBAL 387128
Front Right1 ButtonBlack
View on
Amazon
ROSTRA 660303
🇺🇸 US 🇨🇦 CA
Front Right
View on
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ROSTRA 660385
🇺🇸 US 🇨🇦 CA
Rear
View on
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ROSTRA 660063
🇺🇸 US 🇨🇦 CA
Front Left
View on
Amazon
STANDARD MOTOR PRODUCTS DWS251
🇺🇸 US 🇨🇦 CA
Front Right
View on
Amazon
STANDARD MOTOR PRODUCTS DWS264
🇺🇸 US 🇨🇦 CA
Rear
View on
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STANDARD MOTOR PRODUCTS DWS198
🇺🇸 US 🇨🇦 CA
Front Left
View on
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WELLS 1S3875
🇺🇸 US 🇨🇦 CA
Front Right
View on
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WELLS 1S3877
🇺🇸 US 🇨🇦 CA
Rear
View on
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WELLS 1S3874
🇺🇸 US 🇨🇦 CA
Front Left
View on
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This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Powertrain Control Module Relay

Brand Part Number Markets Notes Buy
HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
View on
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This table covers the relays that control the Powertrain Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Radiator Fan Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 1581106
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 1581106
Black
5-TerminalSPDT 280 Mini, Hi/LowNot ShroudedMotor Relay
View on
Amazon
GM GENUINE Popular 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith resistorMotor Relay
View on
Amazon
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current MicroMotor Relay
View on
Amazon
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
Fitment notes — ACDELCO D1741C
GoldVoltage: 12 VDC
4 Blade TerminalMotor Relay
View on
Amazon
FOUR SEASONS 36009
🇺🇸 US 🇨🇦 CA
Black 5 Pin without ShroudMotor Relay
View on
Amazon
FOUR SEASONS 36010
🇺🇸 US 🇨🇦 CA
4 PinMotor Relay
View on
Amazon
HELLA 933332581
🇺🇸 US 🇨🇦 CA
5-Pin ConnectorColor: Black
Fitment notes — HELLA 933332581
5-Pin ConnectorColor: Black
Motor Relay
View on
Amazon
HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
Fitment notes — HELLA 933332601
5-pin connector
Motor Relay
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
Squarewith 4 Blade Terminals
View on
Amazon
ROSTRA 600014
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600014
Amperage Rating: 30 AmpereConnector Gender: MaleConnector Shape: Square
with 5 Blade Terminals
View on
Amazon
STANDARD MOTOR PRODUCTS RY604
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 5black
Fitment notes — STANDARD MOTOR PRODUCTS RY604
Terminal Quantity: 5black
with 5 Blade TerminalMotor Relay
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
Fitment notes — STANDARD MOTOR PRODUCTS RY280
Terminal Quantity: 4
with 4 Blade TerminalMotor Relay
View on
Amazon
STANDARD MOTOR PRODUCTS RY232
🇺🇸 US 🇨🇦 CA
Amperage Rating: 35 AConnector Gender: Male
Fitment notes — STANDARD MOTOR PRODUCTS RY232
Amperage Rating: 35 AConnector Gender: MaleFunctions: Multi-Function Relayblack
with 5 Blade TerminalMotor Relay
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
Replaces Original Blue or Gray Relaywith 4 Terminal(s)Square TypeMotor Relay
View on
Amazon
WELLS 1R1055
🇺🇸 US 🇨🇦 CA
Amperage Rating: 30 AMounting Hardware Included: No
Fitment notes — WELLS 1R1055
Amperage Rating: 30 AMounting Hardware Included: No
with 5 Terminal(s)BlackMotor Relay
View on
Amazon

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Seat Heater Switch

Brand Part Number Markets Notes Buy
ROSTRA 661223
🇺🇸 US 🇨🇦 CA
Fits Front Right
Fitment notes — ROSTRA 661223
Fits:
Front Right
or:
Front Left
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This table covers the Seat Heater switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Starter Motor Control Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 13503102
🇺🇸 US 🇨🇦 CA
SPST 280 MiniGray
Fitment notes — GM GENUINE 13503102
SPST 280 MiniGray4-WaySquare Casewith Resistor
View on
Amazon
ACDELCO D1741C
🇺🇸 US 🇨🇦 CA
GoldVoltage: 12 VDC
View on
Amazon
ROSTRA 600007
🇺🇸 US 🇨🇦 CA
Amperage Rating: 20 AmpereConnector Gender: Male
Fitment notes — ROSTRA 600007
Amperage Rating: 20 AmpereConnector Gender: MaleConnector Shape: SquareTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY280
🇺🇸 US 🇨🇦 CA
Terminal Quantity: 4
View on
Amazon
WELLS 1R1085
🇺🇸 US 🇨🇦 CA
Amperage Rating: 40 AConnector Gender: Male
Fitment notes — WELLS 1R1085
Amperage Rating: 40 AConnector Gender: MaleCover Material: PlasticMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Sunroof / Sunshade Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS DS3331
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S8662
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Sunroof / Sunshade switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Transmission-Automatic Fluid Pressure Switch

Brand Part Number Markets Notes Buy
ROSTRA 501337
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S10175
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Transmission-Automatic Fluid Pressure switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Transmission-Automatic Manual Shift Shaft Position Switch

Brand Part Number Markets Notes Buy
GM GENUINE 24239970
🇺🇸 US 🇨🇦 CA
View on
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This table covers the Transmission-Automatic Manual Shift Shaft Position switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Trunk Release Relay

Brand Part Number Markets Notes Buy
GM GENUINE Popular 1581106
🇺🇸 US 🇨🇦 CA
Black
Fitment notes — GM GENUINE 1581106
Black
Black5-TerminalSPDT 280 Mini, Hi/LowNot Shrouded
View on
Amazon
GM GENUINE Popular 13500114
🇺🇸 US 🇨🇦 CA
Gray35AMP
Fitment notes — GM GENUINE 13500114
Gray35AMP4-TerminalHigh Current Micro
View on
Amazon
HOLSTEIN 2RSW1002
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA 600001
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AmpereConnector Shape: Rectangle
Fitment notes — ROSTRA 600001
Amperage Rating: 25 AmpereConnector Shape: RectangleTerminal Type: Blade Pin
View on
Amazon
STANDARD MOTOR PRODUCTS RY601
🇺🇸 US 🇨🇦 CA
Functions: RelayMounting Hardware Included: No
Fitment notes — STANDARD MOTOR PRODUCTS RY601
Functions: RelayMounting Hardware Included: NoTerminal Quantity: 4
View on
Amazon
WELLS 1R1056
🇺🇸 US 🇨🇦 CA
Amperage Rating: 25 AConnector Gender: Male
Fitment notes — WELLS 1R1056
Amperage Rating: 25 AConnector Gender: MaleMounting Hardware Included: No
View on
Amazon

This table covers the relays that control the Trunk Release circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Turn Signal Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS CBS1178
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S3154
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Wiper / Washer Switch

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS CBS1178
🇺🇸 US 🇨🇦 CA
View on
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WELLS 1S3154
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Wiper / Washer switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.

Wiper Motor Relay

Brand Part Number Markets Notes Buy
HELLA 933332601
🇺🇸 US 🇨🇦 CA
5-pin connector
View on
Amazon

This table covers the relays that control the Wiper Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.

Buying Electrical Switch & Relay Parts for a 2004 Buick Lesabre

On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.

  • Confirm you have the 3.8L V6 engine — every part on this page is matched to it.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Radiator Fan Relay and Power Window Switch .

Frequently Asked Questions

How many electrical switch & relay parts fit the 2004 Buick Lesabre?

Our catalog currently lists 203 electrical switch & relay parts for the 2004 Buick Lesabre across 50 subcategories and 19 brands, covering the 3.8L V6 engine. Each part is matched to the engine(s) it fits.

What are the signs of electrical switch & relay problems on a 2004 Buick Lesabre?

Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.

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 2004 Buick Lesabre 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 2004 Buick Lesabre?

Every part on this page is matched to the 3.8L V6 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2004 Buick Lesabre

Electrical Switch & Relay Parts for Other Buick Lesabre Years

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