2019 GMC Terrain Electrical Connector Parts: OEM & Replacement (144 Parts)

The 2019 GMC Terrain has 144 electrical connector parts with verified fitment on this page — 48 part types and 10 brands, covering both the 1.6L L4 DIESEL Turbocharged and the 2.0L L4 Turbocharged. Each part includes a manufacturer part number and application notes.

The connector system on the 2019 GMC Terrain supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Body Wiring Harness / Connector (16 parts), Trailer Connector (15 parts) and Engine Wiring Harness / Connector (11 parts). The other 45 part types cover the remaining 102 parts.

A/C Compressor Clutch Coil Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2860	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalGauge: 16 Gauge Fitment notes — STANDARD MOTOR PRODUCTS S2860 Connector Shape: OvalGauge: 16 GaugeHarness LengthInches: 13Terminal Type: Bladeblack	View on Amazon

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.

ABS Wheel Speed Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Popular Fits: all 2019 Terrain engines	HP3945	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Square Fitment notes — STANDARD MOTOR PRODUCTS HP3945 HandypackConnector Shape: SquareIncludes Wheel Speed Sensor Wiring HarnessBlackIncludes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Popular Fits: all 2019 Terrain engines	S824	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: SquareHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S824 Connector Shape: SquareHarness LengthIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Wheel Speed Sensor Wiring Harnessinches: 7Length (In): 1.25Wiring Harness Length (mm): 209.55Black	View on Amazon
ACDELCO Fits: all 2019 Terrain engines	PT2160	🇺🇸 US 🇨🇦 CA	GoldShape: Square	View on Amazon
HOLSTEIN Fits: all 2019 Terrain engines	2HAR0035	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness Fitment notes — HOLSTEIN 2HAR0035 Includes ABS Wheel Speed Sensor Wire Harness Fits: Front or: RearFWD	View on Amazon
WELLS Fits: all 2019 Terrain engines	1P3308	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes Butt Connectors Fitment notes — WELLS 1P3308 Includes Butt Connectors Fits: Rear or: Frontwithout Locking Tab	View on Amazon
WELLS Fits: all 2019 Terrain engines	1P4266	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Frontwith Locking Tab	View on Amazon

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 Fits: all 2019 Terrain engines	S2912	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

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.

Air Intake / Charge Temperature Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S2813	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Intake Air	View on Amazon

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.

Alternator / Generator Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: all 2019 Terrain engines	84941154	🇺🇸 US 🇨🇦 CA	Black Fitment notes — ACDELCO 84941154 Black Si Elec Code: G13Generator X12-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT2971	🇺🇸 US 🇨🇦 CA	Gender: MaleTerminal Type: Blade Fitment notes — GM GENUINE PT2971 Gender: MaleTerminal Type: BladeBlack Si Elec Code: G13Generator X12-Way Femalewith Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S1477	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	without Wiring Harness	View on Amazon
WELLS Fits: all 2019 Terrain engines	1P3341	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

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
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S717	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Attachment Method: Push OnIncludes Interior Lamp Switch Fitment notes — STANDARD MOTOR PRODUCTS S717 Attachment Method: Push OnIncludes Interior Lamp SwitchConnector Shape: SquareGender: MaleWire Gauge (GA): 18Black	View on Amazon

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.

Battery Current Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2860	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalGauge: 16 Gauge Fitment notes — STANDARD MOTOR PRODUCTS S2860 Connector Shape: OvalGauge: 16 GaugeHarness LengthInches: 13Terminal Type: Bladeblack	View on Amazon

This table covers the harness connectors at the Battery Current 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.

Blind Spot Detection Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2507	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Blind Spot Detection 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.

Body Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2629	🇺🇸 US 🇨🇦 CA	Terminating ResistorHigh Speed Extension Bus 1 Fitment notes — GM GENUINE PT2629 Terminating ResistorHigh Speed Extension Bus 1Si Electrical Code: R6E2-Way Female Black	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2550	🇺🇸 US 🇨🇦 CA	BlackShape: Round Fitment notes — GM GENUINE PT2550 BlackShape: Round Si Elec Code: M97Fuel Fill Door Lock Actuator2-Way Femalewith LeadsPhysically verify part matches original plug	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	13577534	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13577534 Black Si Elec Code: X50DFuse BlockBattery X82-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Si Elec Code: B20Brake Fluid Level Switch2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	87815146	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 87815146 Black Terminating ResistorHigh Speed Extension Bus 1Si Electrical Code: R6E2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3702	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3702 Black Si Elec Code: T10EKeyless Entry AntennaRear Compartment2-Way Femalewith Leads1.5mm	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3776	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3776 Black Si Elec Code: B55Engine Hood Switch3-Way Femalewith Leads0.75MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	85576725	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 85576725 Black Fits: Si Elec Code: K108Active Noise Cancellation Module X18-Way Femalewith Leadsor Si Elec Code: T3Audio Amplifier X18-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	84724190	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84724190 Black Si Elec Code: E40Electrical Auxiliary Heater X14-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3555	🇺🇸 US 🇨🇦 CA	Fits RearLeft Fitment notes — GM GENUINE PT3555 Fits: RearLeftSide Impact SensorSi Elec Code: B63LRGray.75 Wire Size2-Way Femalewith Leads or: LeftSi Elec Code: B59LGrayFront Impact Sensor.75 Wire Size2-Way Femalewith Leads or: RearRightSide Impact SensorSi Elec Code: B63RRGray.75 Wire Size2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3906	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3906 Black Fits: FrontLeftWheel Speed SensorSi Elec Code: B5LF2-Way Femalewith Leads or: FrontRightWheel Speed SensorSi Elec Code: B5RF2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13529172	🇺🇸 US 🇨🇦 CA	Fits LeftService Information Electrical Code: F105L Fitment notes — GM GENUINE 13529172 Fits: LeftService Information Electrical Code: F105LRoof Rail Air BagGray with Yellow Cover2-Way Femalewith Leads or: RightService Information Electrical Code: F105RRoof Rail Air BagGray with Yellow Cover2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3364	🇺🇸 US 🇨🇦 CA	Fits LeftTail Lamp Assembly Fitment notes — GM GENUINE PT3364 Fits: LeftTail Lamp AssemblyX1Si Elec Code: E42LGreen2-Way Femalewith Leads or: RightTail Lamp AssemblyX1Si Elec Code: E42RGreen2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3667	🇺🇸 US 🇨🇦 CA	Si Elec Code: K182Parking Assist Control Module X2 Fitment notes — GM GENUINE PT3667 Si Elec Code: K182Parking Assist Control Module X2Gray.75mm8-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	86816072	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86816072 Black Trailer ConnectorSi Elec Code: X887-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT2888	🇺🇸 US 🇨🇦 CA	Windshield Wiper MotorSi Elec Code: M75 Fitment notes — GM GENUINE PT2888 Windshield Wiper MotorSi Elec Code: M75Gray5-Way Femalewith Leads	View on Amazon

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 Pedal Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2506	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Terminal Type: Blade Fitment notes — STANDARD MOTOR PRODUCTS S2506 Terminal Type: Blade Pedal Position Sensor Connector	View on Amazon

This table covers the harness connectors at the Brake Pedal. 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
GM GENUINE Fits: all 2019 Terrain engines	86792094	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86792094 Black Fits: Si Electrical Code: B23ECamshaft Position SensorExhaust3-Way Femalewith LeadsTerminal PN 1418850-3or Si Electrical Code: B23FCamshaft Position SensorIntake3-Way Femalewith LeadsTerminal PN 1418850-3	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2316	🇺🇸 US 🇨🇦 CA	Connector Shape: OvalNumber of Splice Connectors Included: 3	View on Amazon

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.

Crankshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: all 2019 Terrain engines	86792094	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86792094 Black Si Elec Code: B26Crankshaft Position Sensor3-Way Femalewith LeadsTerminal PN 1418850-3	View on Amazon
HOLSTEIN Fits: 2.0L L4 Turbocharged	2HAR0060	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S2316	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalNumber of Splice Connectors Included: 3	View on Amazon

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.

Diesel Exhaust Fluid (DEF) Pump Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 1.6L L4 DIESEL Turbocharged	84410276	🇺🇸 US 🇨🇦 CA	SELECTIVE CATALYTIC REDUCTION EXHAUST System (NDE)	View on Amazon

This table covers the wiring-harness connectors at the Diesel Exhaust Fluid (DEF) Pump. 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.

Differential Lock Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: all 2019 Terrain engines	84916461	🇺🇸 US 🇨🇦 CA	4WD	View on Amazon

This table covers the harness connectors at the Differential Lock 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.

EEC Relay Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	HP3810	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Polygon Fitment notes — STANDARD MOTOR PRODUCTS HP3810 HandypackConnector Shape: PolygonLength (In): 1Black with 5 Female Terminals	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S654	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: PolygonLength (In): 1 Fitment notes — STANDARD MOTOR PRODUCTS S654 Connector Shape: PolygonLength (In): 1Wire Gauge (GA): 12black with 5 Female Terminals	View on Amazon

This table covers the harness connectors at the EEC 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.

EGR Valve Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2488	🇺🇸 US 🇨🇦 CA		View on Amazon

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.

Engine Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2923	🇺🇸 US 🇨🇦 CA	Crimping Tool Included: NoLength: 12 in Fitment notes — GM GENUINE PT2923 Crimping Tool Included: NoLength: 12 inBlack Fits: Si Elec Code: B65Intake Manifold Pressure and Air Temperature Sensor4-Way Femalewith Leadsor Si Elec Code: B47BFuel Rail Pressure Sensor4-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2971	🇺🇸 US 🇨🇦 CA	Gender: MaleTerminal Type: Blade Fitment notes — GM GENUINE PT2971 Gender: MaleTerminal Type: BladeBlack Fits: Starter Motor X1Si Elec Code: M642-Way Femalewith Leadsor Si Elec Code: Q47Exhaust Gas Recirculation Cooler Bypass Solenoid Valve2-Way Femalewith Leadsor Turbocharger Vane Position Control Solenoid ValveSi Elec Code: Q412-Way Femalewith Leadsor Si Elec Code: E45Positive Crankcase Ventilation Heater2-Way Femalewith Leads Fits: Si Elec Code: B35Engine Oil Level Switch2-Way Femalewith Leadsor Starter Motor X1Si Elec Code: M642-Way Femalewith Leadsor Si Elec Code: Q47Exhaust Gas Recirculation Cooler Bypass Solenoid Valve2-Way Femalewith Leadsor Turbocharger Vane Position Control Solenoid ValveSi Elec Code: Q412-Way Femalewith Leadsor Si Elec Code: E45Positive Crankcase Ventilation Heater2-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Fits: Si Elec Code: Q44Engine Oil Pressure Control Solenoid Valve2-Way Femalewith Leadsor Si Elec Code: B203Radiator Coolant Temperature Sensor2-Way Femalewith Leadsor Si Elec Code: B35Engine Oil Level Switch2-Way Femalewith Leadsor Si Elec Code: B267Piston Cooling Oil Pressure Switch2-Way Femalewith Leadsor Si Elec Code: Q84CCamshaft Position Actuator Park Lock Solenoid ValveIntake2-Way Femalewith Leadsor Service Information Electrical Code: Q12Evaporative Emission Purge Solenoid Valve2-Way Femalewith Leads Fits: Si Elec Code: Q6ECamshaft Position Actuator Solenoid ValveExhaust2-Way Femalewith Leadsor Si Elec Code: B203Radiator Coolant Temperature Sensor2-Way Femalewith Leadsor Si Elec Code: B267Piston Cooling Oil Pressure Switch2-Way Femalewith Leadsor Si Elec Code: Q84CCamshaft Position Actuator Park Lock Solenoid ValveIntake2-Way Femalewith Leadsor Service Information Electrical Code: Q12Evaporative Emission Purge Solenoid Valve2-Way Femalewith Leads	View on Amazon
ACDELCO Fits: all 2019 Terrain engines	84941154	🇺🇸 US 🇨🇦 CA	Black Fitment notes — ACDELCO 84941154 Black Fits: Starter Motor X1Si Elec Code: M642-Way Femalewith Leadsor Si Elec Code: Q47Exhaust Gas Recirculation Cooler Bypass Solenoid Valve2-Way Femalewith Leadsor Turbocharger Vane Position Control Solenoid ValveSi Elec Code: Q412-Way Femalewith Leadsor Si Elec Code: E45Positive Crankcase Ventilation Heater2-Way Femalewith Leads Fits: Si Elec Code: B35Engine Oil Level Switch2-Way Femalewith Leadsor Starter Motor X1Si Elec Code: M642-Way Femalewith Leadsor Si Elec Code: Q47Exhaust Gas Recirculation Cooler Bypass Solenoid Valve2-Way Femalewith Leadsor Turbocharger Vane Position Control Solenoid ValveSi Elec Code: Q412-Way Femalewith Leadsor Si Elec Code: E45Positive Crankcase Ventilation Heater2-Way Femalewith Leads	View on Amazon
ACDELCO Fits: all 2019 Terrain engines	84785110	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO 84785110 GM Original Equipment BLACKAUTOMATIC TRANSMISSION ACCUMULATOR SOLENOID VALVE.75MM22-WAY FEMALEwith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT2930	🇺🇸 US 🇨🇦 CA	Turbocharger Bypass Solenoid ValveSi Elec Code: Q40 Fitment notes — GM GENUINE PT2930 Turbocharger Bypass Solenoid ValveSi Elec Code: Q40Gray2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13577534	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13577534 Black Si Elec Code: G18High Pressure Fuel Pump2-Way Femalewith Leads Fits: Si Elec Code: G18High Pressure Fuel Pump2-Way Femalewith Leadsor Si Elec Code: Q44Engine Oil Pressure Control Solenoid Valve2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT2931	🇺🇸 US 🇨🇦 CA	Si Elec Code: Q6FGray Fitment notes — GM GENUINE PT2931 Si Elec Code: Q6FGrayCamshaft Position Actuator Solenoid ValveIntake2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3098	🇺🇸 US 🇨🇦 CA	BlackLength: 8 In Fitment notes — GM GENUINE PT3098 BlackLength: 8 InTerminal Gender: Female Turbocharger Boost/Intake Air Temperature SensorSi Elec Code: B111B4-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3534	🇺🇸 US 🇨🇦 CA	BlackShape: Oval Fitment notes — GM GENUINE PT3534 BlackShape: Oval Fits: Throttle BodySi Elec Code: Q386-Way Femalewith Leadsor Si Elec Code: Q20Intake Air Flow Valve6-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3793	🇺🇸 US 🇨🇦 CA	Fits Si Elec Code: M98Intake Manifold Runner Valve Actuator Fitment notes — GM GENUINE PT3793 Fits: Si Elec Code: M98Intake Manifold Runner Valve ActuatorBrown6-Way Femalewith Leads1.0MM2 or: Si Elec Code: Q14Exhaust Gas Recirculation ValveBrown6-Way Femalewith Leads1.0MM2	View on Amazon

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.

Exhaust Gas Temperature (EGT) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: all 2019 Terrain engines	PT3035	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3035 Black Fits: Si Elec Code: B131AExhaust Temperature Sensor 12-Way Femalewith Leadsor Si Elec Code: B131BExhaust Temperature Sensor 22-Way Femalewith Leadsor Si Elec Code: B131CExhaust Temperature Sensor 32-Way Femalewith Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2492	🇺🇸 US 🇨🇦 CA		View on Amazon

This table covers the harness connectors at the Exhaust Gas Temperature (EGT) 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.

Fuel Injection Pressure Regulator Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: all 2019 Terrain engines	84941154	🇺🇸 US 🇨🇦 CA	Black Fitment notes — ACDELCO 84941154 Black Si Elec Code: Q18AFuel Pressure Regulator 12-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT2971	🇺🇸 US 🇨🇦 CA	Gender: MaleTerminal Type: Blade Fitment notes — GM GENUINE PT2971 Gender: MaleTerminal Type: BladeBlack Si Elec Code: Q18AFuel Pressure Regulator 12-Way Femalewith Leads	View on Amazon

This table covers the harness connectors at the Fuel Injection Pressure Regulator. 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
STANDARD MOTOR PRODUCTS Popular Fits: 2.0L L4 Turbocharged	HP4347	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Handypack	View on Amazon
GB REMANUFACTURING Fits: 2.0L L4 Turbocharged	5191	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	19352907	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19352907 Black SI ELEC CODE: X160ENGINE HARNESS TO FUEL INJECTOR HARNESS12-WAY FEMALEwithout LEADS	View on Amazon
GM GENUINE Fits: 1.6L L4 DIESEL Turbocharged	PT3442	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3442 Black Fits: Si Elec Code: Q17AFuel Injector 12-Way Femalewith Leadsor Si Elec Code: Q17BFuel Injector 22-Way Femalewith Leadsor Si Elec Code: Q17CFuel Injector 32-Way Femalewith Leadsor Si Elec Code: Q17DFuel Injector 42-Way Femalewith Leads	View on Amazon
SKP Fits: 2.0L L4 Turbocharged	SKS824	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S1895	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Number of Splice Connectors Included: 2	View on Amazon

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 Rail Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2426	🇺🇸 US 🇨🇦 CA	with 2 Terminal(s)	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2894	🇺🇸 US 🇨🇦 CA	with 4 Blade Terminals	View on Amazon

This table covers the harness connectors at the Fuel Rail. 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 Fits: 2.0L L4 Turbocharged	S3309	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	FWD	View on Amazon

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.

Headlamp Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: all 2019 Terrain engines	PT3776	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3776 Black Si Elec Code: X102Forward Lamp Harness to Active Grille Air Shutter Harness3-Way Femalewith Leads0.75MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	85005016	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 85005016 Black Windshield Washer PumpSi Elec Code: G242-Way Femalewith Leads2.5MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13593220	🇺🇸 US 🇨🇦 CA	Windshield Washer Fluid Level SwitchSi Elec Code: B118B Fitment notes — GM GENUINE 13593220 Windshield Washer Fluid Level SwitchSi Elec Code: B118BGray2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3555	🇺🇸 US 🇨🇦 CA	RightSi Elec Code: B59R Fitment notes — GM GENUINE PT3555 RightSi Elec Code: B59RGrayFront Impact Sensor.75 Wire Size2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	19352907	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19352907 Black Fits: LeftSI ELEC CODE: X110with HID Headlamps (T4F)FORWARD LAMP HARNESS TO HEADLAMP HARNESS12-WAY FEMALEwithout LEADS or: RightSI ELEC CODE: X120with HID Headlamps (T4F)FORWARD LAMP HARNESS TO HEADLAMP HARNESS12-WAY FEMALEwithout LEADS	View on Amazon

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.

Headliner Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: all 2019 Terrain engines	PT2726	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2726 Black Fits: LeftSunshadeSi Elec Code: A3L2-Way Malewith LeadsSquare or: FrontLeftService Information Electric Code: B24LFMobile Telephone Microphone2-Way Malewith LeadsSquare	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	84766302	🇺🇸 US 🇨🇦 CA	Fits RearLeft Fitment notes — GM GENUINE 84766302 Fits: RearLeftSi Elec Code: E37LRGrayDome/Reading Lamps.75mm24-Way Femalewith Leadsor Si Elec Code: E8SRear Compartment Courtesy LampGray.75mm24-Way Femalewith Leads	View on Amazon

This table covers the harness connectors at the Headliner. 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 Relay Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	HP3810	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Polygon Fitment notes — STANDARD MOTOR PRODUCTS HP3810 HandypackConnector Shape: PolygonLength (In): 1Black	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S654	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: PolygonLength (In): 1 Fitment notes — STANDARD MOTOR PRODUCTS S654 Connector Shape: PolygonLength (In): 1Wire Gauge (GA): 12black	View on Amazon

This table covers the harness connectors at the Ignition 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.

Instrument Panel Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: all 2019 Terrain engines	PT2629	🇺🇸 US 🇨🇦 CA	Terminating ResistorHigh Speed Extension Bus 2 Fitment notes — GM GENUINE PT2629 Terminating ResistorHigh Speed Extension Bus 2Si Electrical Code: R6F2-Way Female Black	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	87815146	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 87815146 Black Terminating ResistorHigh Speed Extension Bus 2Si Electrical Code: R6F2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	84724190	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84724190 Black Si Elec Code: S26Hazard Warning Switch4-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3735	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3735 Black Fits: Transmission Shift LeverService Information Electrical Code: S3.75MM26-Way Femalewith Leadsor Si Elec Code: X83Auxiliary Audio Input X1.75MM26-Way Femalewith Leadsor Si Elec Code: X83Auxiliary Audio Input X2.75MM26-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	PT3667	🇺🇸 US 🇨🇦 CA	Si Elec Code: S38Ignition Mode Switch Fitment notes — GM GENUINE PT3667 Si Elec Code: S38Ignition Mode SwitchGray.75mm8-Way Femalewith Leads	View on Amazon

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.

Knock / Detonation Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: all 2019 Terrain engines	19301207	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19301207 Black Fits: Si Elec Code: B68BKnock Sensor 22-Way Femalewith Leadsor Si Elec Code: B68AKnock Sensor 12-Way Femalewith Leads	View on Amazon

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.

Mass Air Flow (MAF) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: all 2019 Terrain engines	PT2619	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT2619 GM Original Equipment SI Electric Code: B74MANIFOLD ABSOLUTE PRESSURE SENSORGRAY3-WAY FEMALEwith Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2507	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

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.

Oil Level Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	HP4325	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Rectangle Fitment notes — STANDARD MOTOR PRODUCTS HP4325 HandypackConnector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S1024	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: RectangleHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S1024 Connector Shape: RectangleHarness Length16-1/2 "Terminal Type: Blade	View on Amazon

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
GM GENUINE Fits: all 2019 Terrain engines	PT2980	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2980 Black Si Elec Code: B37BEngine Oil Pressure Sensor3-Way Femalewith Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2882	🇺🇸 US 🇨🇦 CA	Connector Shape: RectangularHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S2882 Connector Shape: RectangularHarness Lengthinches: 12.25	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S2278	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	BlackConnector Shape: Oval	View on Amazon

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.

Oxygen (O2) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 2.0L L4 Turbocharged	PT2922	🇺🇸 US 🇨🇦 CA	Si Elec Code: B52BHeated Oxygen Sensor 2 Fitment notes — GM GENUINE PT2922 Si Elec Code: B52BHeated Oxygen Sensor 2Gray4-Way Femalewith Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S3097	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	RearGray Fitment notes — STANDARD MOTOR PRODUCTS S3097 RearGraywith 4 Female Terminals	View on Amazon

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.

Park Assist (PAS) Camera Connector

Brand	Part Number	Markets	Notes	Buy
METRA Fits: all 2019 Terrain engines	AXACGM1	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Camera Interface	View on Amazon

This table covers the harness connectors at the Park Assist (PAS) Camera. 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 Aid Sensor Connector

Brand	Part Number	Markets	Notes	Buy
HOLSTEIN Fits: all 2019 Terrain engines	2HAR0060	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Rear	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2916	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Front Outer	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2316	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalNumber of Splice Connectors Included: 3 Fitment notes — STANDARD MOTOR PRODUCTS S2316 Connector Shape: OvalNumber of Splice Connectors Included: 3Rear	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2269	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: RectangleNumber of Splice Connectors Included: 3 Fitment notes — STANDARD MOTOR PRODUCTS S2269 Connector Shape: RectangleNumber of Splice Connectors Included: 3Front	View on Amazon

This table covers the harness connectors at the Parking Aid 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 Brake Actuator Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S3064	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Rear	View on Amazon

This table covers the harness connectors at the Parking Brake 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.

Radiator Fan Motor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2267	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: Round	View on Amazon

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.

Starter Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
WELLS Fits: all 2019 Terrain engines	1P3645	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Starter 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.

Temperature Sender / Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 1.6L L4 DIESEL Turbocharged	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Si Elec Code: B34Engine Coolant Temperature Sensor2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 2.0L L4 Turbocharged	PT2550	🇺🇸 US 🇨🇦 CA	BlackShape: Round Fitment notes — GM GENUINE PT2550 BlackShape: Round Si Elec Code: B34Engine Coolant Temperature Sensor2-Way Femalewith LeadsPhysically verify part matches original plug	View on Amazon
HOLSTEIN Fits: all 2019 Terrain engines	2HAR0036	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 1.6L L4 DIESEL Turbocharged	S2860	🇺🇸 US 🇨🇦 CA	Connector Shape: OvalGauge: 16 Gauge Fitment notes — STANDARD MOTOR PRODUCTS S2860 Connector Shape: OvalGauge: 16 GaugeHarness LengthInches: 13Terminal Type: Bladeblack	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S1686	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: OvalBlack Fitment notes — STANDARD MOTOR PRODUCTS S1686 Connector Shape: OvalBlackIncludes Wheel Speed Sensor Wiring Harness, ABS Wheel Speed Sensor Wire Harness	View on Amazon
WELLS Fits: 2.0L L4 Turbocharged	1P3395	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

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 Control Actuator Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2409	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Gender: MaleHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S2409 Gender: MaleHarness Lengthinches: 12.5	View on Amazon

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.

Trailer Adapter Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: all 2019 Terrain engines	57101	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	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	View on Amazon

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 Connector

Brand	Part Number	Markets	Notes	Buy
CURT Popular Fits: all 2019 Terrain engines	55415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM Socket Fitment notes — CURT 55415 Replacement 7-Way RV Blade OEM Socket with Factory Tow Package	View on Amazon
CURT Popular Fits: all 2019 Terrain engines	56229	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	7-Way USCAR Electrical ConnectorLength: 24 in. Fitment notes — CURT 56229 7-Way USCAR Electrical ConnectorLength: 24 in.Bonded Wire with Factory Tow Package	View on Amazon
STANDARD MOTOR PRODUCTS Popular Fits: all 2019 Terrain engines	TC656	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	with Towing PackageOE Style	View on Amazon
CURT Fits: all 2019 Terrain engines	56415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM SocketTwist-In Fitment notes — CURT 56415 Replacement 7-Way RV Blade OEM SocketTwist-In with Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	55515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring ConnectorOE 4-Way Flat Fitment notes — CURT 55515 Custom Wiring ConnectorOE 4-Way FlatPlugs Into USCAR Replacement2-Wire Systemwith Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	56515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector5-Way Flat Fitment notes — CURT 56515 Custom Wiring Connector5-Way Flat 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	55774	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way Fitment notes — CURT 55774 OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way with Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	57015	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket	View on Amazon
CURT Fits: all 2019 Terrain engines	55384	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector4-Way Flat Fitment notes — CURT 55384 Custom Wiring Connector4-Way FlatRetains Use of 7 Way Round Connector 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	57020	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Fitment notes — CURT 57020 OEM Replacement Dual-Output 7 and 4 Way ConnectorPackaged Factory TowPlugs Into USCAR	View on Amazon
CURT Fits: all 2019 Terrain engines	56584	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness5-Way Flat Fitment notes — CURT 56584 Custom Wiring Harness5-Way FlatRetains Use Of 7-Way OEM 2-Wire Systemwith Factory Tow Package	View on Amazon
CURT Fits: all 2019 Terrain engines	56429	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector4-Way Flat	View on Amazon
DORMAN Fits: all 2019 Terrain engines	645170	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Black Fitment notes — DORMAN 645170 Black 7 Way Female with Leads	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	TC654	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	with Towing Packagewith 7 Way	View on Amazon
WELLS Fits: all 2019 Terrain engines	4T1242	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Flat 4 to OE Plug	View on Amazon

This table covers the trailer-lighting connectors at the hitch. 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: all 2019 Terrain engines	56475	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness Extension Fitment notes — CURT 56475 Custom Wiring Harness Extension 20"Uscar To Uscarwith Factory Tow Package	View on Amazon

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.

Transmission-Automatic Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: 2.0L L4 Turbocharged	24042637	🇺🇸 US 🇨🇦 CA	Fits FWDTrans. code 9T50 Fitment notes — ACDELCO 24042637 Fits: FWDTrans. code 9T503.17 Ratio Transaxle Final Drive (FXP), Stop/Start Engine Control System (KL9)9 speedor FWDTrans. code 9T503.17 Ratio Transaxle Final Drive (FXP), Driver Select PTU Chassis with Optional AWD (F48), Stop/Start Engine Control System (KL9)9 speed	View on Amazon
GM GENUINE Fits: 2.0L L4 Turbocharged	24053077	🇺🇸 US 🇨🇦 CA	Trans. Code 9T509 speed Automatic trans. Fitment notes — GM GENUINE 24053077 Trans. Code 9T509 speed Automatic trans.with Oil Level ControlEtrs, with Valve Body Oil LVL control Components3.17 Ratio (FXP), Stop/Start Engine Control System (KL9)	View on Amazon

This table covers the wiring-harness connectors at the Transmission-Automatic. 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.

Vapor Canister Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: all 2019 Terrain engines	PT2160	🇺🇸 US 🇨🇦 CA	GoldShape: Square	View on Amazon
HOLSTEIN Fits: all 2019 Terrain engines	2HAR0035	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	HP3945	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Square Fitment notes — STANDARD MOTOR PRODUCTS HP3945 HandypackConnector Shape: SquareIncludes Wheel Speed Sensor Wiring HarnessBlackIncludes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S824	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: SquareHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S824 Connector Shape: SquareHarness LengthIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Wheel Speed Sensor Wiring Harnessinches: 7Length (In): 1.25Wiring Harness Length (mm): 209.55Black	View on Amazon

This table covers the harness connectors at the Vapor Canister. 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.

Vapor Canister Vent Valve / Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: 2.0L L4 Turbocharged	PT2160	🇺🇸 US 🇨🇦 CA	GoldShape: Square	View on Amazon
HOLSTEIN Fits: 2.0L L4 Turbocharged	2HAR0035	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Includes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	HP3945	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	HandypackConnector Shape: Square Fitment notes — STANDARD MOTOR PRODUCTS HP3945 HandypackConnector Shape: SquareIncludes Wheel Speed Sensor Wiring HarnessBlackIncludes ABS Wheel Speed Sensor Wire Harness	View on Amazon
STANDARD MOTOR PRODUCTS Fits: 2.0L L4 Turbocharged	S824	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Connector Shape: SquareHarness Length Fitment notes — STANDARD MOTOR PRODUCTS S824 Connector Shape: SquareHarness LengthIncludes ABS Wheel Speed Sensor Wire HarnessIncludes Wheel Speed Sensor Wiring Harnessinches: 7Length (In): 1.25Wiring Harness Length (mm): 209.55Black	View on Amazon

This table covers the harness connectors at the Vapor Canister Vent Valve / 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.

Washer Fluid Level Sensor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S3082	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Washer 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.

Washer Pump Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S2279	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Front	View on Amazon

This table covers the harness connectors at the Washer 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.

Wiper Motor Connector

Brand	Part Number	Markets	Notes	Buy
STANDARD MOTOR PRODUCTS Fits: all 2019 Terrain engines	S1423	🇺🇸 US 🇨🇦 CA 🇲🇽 MX		View on Amazon

This table covers the harness connectors at the Wiper 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.

Wire Terminal

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: all 2019 Terrain engines	13582308	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 1.00 GU Fitment notes — GM GENUINE 13582308 Multi-PurposeWire Gauge Measurement: 1.00 GUWiring Harness Length (In): 17.72 In	View on Amazon
GM GENUINE Popular Fits: all 2019 Terrain engines	13575812	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 0.80 GU Fitment notes — GM GENUINE 13575812 Multi-PurposeWire Gauge Measurement: 0.80 GU 0.8MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13576369	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 0.50 GU Fitment notes — GM GENUINE 13576369 Multi-PurposeWire Gauge Measurement: 0.50 GU 0.5MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13576377	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 6.00 GU Fitment notes — GM GENUINE 13576377 Multi-PurposeWire Gauge Measurement: 6.00 GU 3.0MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13575850	🇺🇸 US 🇨🇦 CA	Multi-Purpose Fitment notes — GM GENUINE 13575850 Multi-Purpose Labeled 135758501.0MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13575400	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 1.25 GU Fitment notes — GM GENUINE 13575400 Multi-PurposeWire Gauge Measurement: 1.25 GU 1.25MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	19119395	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 1.00 GU Fitment notes — GM GENUINE 19119395 Multi-PurposeWire Gauge Measurement: 1.00 GU 1.0MM2	View on Amazon
GM GENUINE Fits: all 2019 Terrain engines	13575392	🇺🇸 US 🇨🇦 CA	Multi-PurposeWire Gauge Measurement: 2.50 GU Fitment notes — GM GENUINE 13575392 Multi-PurposeWire Gauge Measurement: 2.50 GU 2.5MM2	View on Amazon

This table covers the terminals crimped onto a harness lead.

Buying Electrical Connector Parts for a 2019 GMC Terrain

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. Some electrical connector parts fit every engine; others are 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: Body Wiring Harness / Connector and Trailer Connector .

Frequently Asked Questions

How many electrical connector parts fit the 2019 GMC Terrain?

Our catalog currently lists 144 electrical connector parts for the 2019 GMC Terrain across 48 subcategories and 10 brands, covering both the 1.6L L4 DIESEL Turbocharged and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.

Do electrical connector parts differ between 2019 GMC Terrain engines?

Some do. 112 parts fit every engine; the other 32 are engine-specific. Each row (and the filter at the top) shows which. 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 2019 GMC Terrain?

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 2019 GMC Terrain 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 2019 GMC Terrain?

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 2019 GMC Terrain

Belt Drive Body & Lamp Assembly Brake & Wheel Hub Cooling System Drivetrain Electrical Electrical Bulb & Socket Electrical Switch & Relay Engine Exhaust & Emission Fuel & Air Heat & Air Conditioning Ignition Interior Steering Suspension Automatic Transmission Wheel Wiper & Washer

Electrical Connector Parts for Other GMC Terrain Years

2026 GMC Terrain 2025 GMC Terrain 2024 GMC Terrain 2023 GMC Terrain 2022 GMC Terrain 2021 GMC Terrain 2020 GMC Terrain

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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.

Published by AutoFactsDB from manufacturer application data. How fitment is matched Report a fitment error