2026 GMC Yukon Electrical Connector Parts: OEM & Replacement (71 Parts)

The 2026 GMC Yukon has 71 electrical connector parts with verified fitment on this page — 25 part types and 3 brands, covering all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8). Each part includes a manufacturer part number and application notes.

On the 2026 GMC Yukon, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Most of the listed parts are Engine Wiring Harness / Connector (10 parts), Trailer Connector (10 parts) and Body Wiring Harness / Connector (9 parts). The other 22 part types cover the remaining 42 parts.

ABS Wheel Speed Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	85039843	🇺🇸 US 🇨🇦 CA	Connector Gender: Female Fitment notes — GM GENUINE 85039843 Connector Gender: Female Front RightWHEEL SENSOR ONLYMagneride Package (Z95)	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85090453	🇺🇸 US 🇨🇦 CA	Front RightPremium Smooth Ride Package (ZW7),Police Chassis Package (Z56),Chassis Performance Package (Z60) Fitment notes — GM GENUINE 85090453 Front RightPremium Smooth Ride Package (ZW7),Police Chassis Package (Z56),Chassis Performance Package (Z60)HARNESS AND WHEEL SPEED SENSOR ONLY	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85039841	🇺🇸 US 🇨🇦 CA	Fits Front LeftWheel Speed Sensor Only Fitment notes — GM GENUINE 85039841 Fits: Front LeftWheel Speed Sensor OnlyPolice Chassis Package (Z56)Labeled 85039841,84886787 or: Front LeftWheel Speed Sensor OnlyPremium Smooth Ride Package (ZW7),Chassis Performance Package (Z60)Labeled 85039841,84886787	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85039842	🇺🇸 US 🇨🇦 CA	Connector Gender: Female Fitment notes — GM GENUINE 85039842 Connector Gender: Female Front LeftWHEEL SENSOR ONLYMagneride Package (Z95)	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85090457	🇺🇸 US 🇨🇦 CA	Front RightThis is The Complete Assembly and Includes The Sensor Fitment notes — GM GENUINE 85090457 Front RightThis is The Complete Assembly and Includes The SensorMagneride Package (Z95)	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.

Body Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	13577534	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13577534 Black Si Elec Code: X50BBattery Distribution Engine Compartment Fuse Block X92-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	86802964	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86802964 Black Si Elec Code: P13Horn2-Way Femalewith Leads1.5MM2	View on Amazon
ACDELCO Fits: 5.3L V8, 6.2L V8	PT3567	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3567 GM Original Equipment Fits: PARKING ASSIST CONTROL MODULE X2GRAY8-WAY FEMALEwith Leadsor IMAGE PROCESSING MODULE X7GRAY8-WAY FEMALEwith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13593220	🇺🇸 US 🇨🇦 CA	Windshield Washer Solvent Container Level SensorSi Elec Code: B118 Fitment notes — GM GENUINE 13593220 Windshield Washer Solvent Container Level SensorSi Elec Code: B118Gray2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	19352907	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19352907 Black Fits: LeftSI ELEC CODE: E13LAFRONT HEADLAMP12-WAY FEMALEwithout LEADS or: RightSI ELEC CODE: E13RAFRONT HEADLAMP12-WAY FEMALEwithout LEADS	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13513605	🇺🇸 US 🇨🇦 CA	Si Elec Code: X251Gray Fitment notes — GM GENUINE 13513605 Si Elec Code: X251GrayBody To Auxiliary Heater and Air Conditioning Wiring Harness14-Way Femalewithout Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13591061	🇺🇸 US 🇨🇦 CA	Fits SI ELEC CODE: T3GREEN Fitment notes — GM GENUINE 13591061 Fits: SI ELEC CODE: T3GREENAUDIO AMPLIFIER X216-WAY FEMALEUNSEALEDwithout LEADS or: Si Elec Code: T3RGreenAudio AmplifierAuxiliary16-Way FemaleUnsealedwithout Leadsor Si Electric Code: T3RBGreenAudio AmplifierAuxiliary 216-Way FemaleUnsealedwithout Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	19333239	🇺🇸 US 🇨🇦 CA	Si Elec Code: X344ADK Gray Fitment notes — GM GENUINE 19333239 Si Elec Code: X344ADK GrayBody Harness to Rear Seat Harness12-Way Femalewithout Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	19352214	🇺🇸 US 🇨🇦 CA	Fits LeftService Information Electrical Code: X340B Fitment notes — GM GENUINE 19352214 Fits: LeftService Information Electrical Code: X340BLT Gray16-Way Malewithout LeadsSecond Row Seat Wiring HarnessLeft Cushion to Body or: RightService Information Electrical Code: X344BLT Gray16-Way Malewithout LeadsSecond Row Seat Wiring HarnessRight Cushion to Body	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.

Camshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	86792094	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86792094 Black Si Electrical Code: B23ECamshaft Position Sensor3-Way Femalewith LeadsTerminal PN 1418850-3	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.

Chassis Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	PT2677	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2677 Black Si Elec Code: B136Exhaust Particulate Matter Sensor4-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	PT2612	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2612 Black Service Information Electrical Code: Q13Evaporative Emission Vent Solenoid Valve2-Way Femalewith Leads	View on Amazon
ACDELCO Fits: 5.3L V8, 6.2L V8	PT3773	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3773 GM Original Equipment LeftTail Lamp Assembly Harness to Chassis HarnessBlack6-Way Malewith Leads2.0mm	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3912	🇺🇸 US 🇨🇦 CA	Si Elec Code: B150Natural Fitment notes — GM GENUINE PT3912 Si Elec Code: B150NaturalFuel Tank Pressure Sensor3-Way Femalewith Leads1.5mm	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3509	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3509 Black Fits: Service Information Electrical Code: B11LFFront Suspension 4 Corner Leveling System Position Sensor3-Way Femalewith Leads and CPA or: Service Information Electrical Code: B11LRRear Suspension 2 or 4 Corner Air Leveling Position Sensor3-Way Femalewith Leads and CPA or: Service Information Electrical Code: B11RFFront Suspension 4 Corner Leveling System Position Sensor3-Way Femalewith Leads and CPA or: Service Information Electrical Code: B11RRRear Suspension 2 or 4 Corner Air Leveling Position Sensor3-Way Femalewith Leads and CPA	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3592	🇺🇸 US 🇨🇦 CA	Si Elec Code: A7LT Gray Fitment notes — GM GENUINE PT3592 Si Elec Code: A7LT GrayFuel Tank Fuel Pump Module8-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	86816072	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86816072 Black Tow Vehicle Electrical Receptacle X1Si Elec Code: X88B7-Way Femalewith Leads	View on Amazon

This table covers the wiring-harness connectors at the Chassis. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.

Crankshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
ACDELCO Fits: 5.3L V8, 6.2L V8	PT3940	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3940 GM Original Equipment Si Electric Code: B26Crankshaft Position SensorBlack3-Way Femalewith Leads1.0MM2	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	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

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.

Engine Block Heater Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	84564686	🇺🇸 US 🇨🇦 CA	End 1 Terminal Gender: FemaleEnd 1 Terminal Type: Pin Fitment notes — GM GENUINE 84564686 End 1 Terminal Gender: FemaleEnd 1 Terminal Type: PinWiring Harness Use On Veh Built Prior To 01JAN26PN 85817579Engine Block Heater (K05)1st Design	View on Amazon

This table covers the harness connectors at the Engine Block Heater. 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: 5.3L V8, 6.2L V8	PT2974	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2974 Black Starter X1Si Elec Code: M641-Way Femalewith Leads	View on Amazon
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	PT2971	🇺🇸 US 🇨🇦 CA	Gender: MaleTerminal Type: Blade Fitment notes — GM GENUINE PT2971 Gender: MaleTerminal Type: BladeBlack Fits: Si Elec Code: Q61Reductant Fluid Injector2-Way Femalewith Leadsor Si Elec Code: Q61BReductant Fluid Injector 22-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	86308598	🇺🇸 US 🇨🇦 CA	Fits Si Elec Code: B203Radiator Coolant Temperature Sensoror Si Elec Code:B34K Fitment notes — GM GENUINE 86308598 Fits: Si Elec Code: B203Radiator Coolant Temperature Sensoror Si Elec Code:B34KCharge Air Cooler Coolant Temperature SensorInlet	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Fits: Si Elec Code: B203Radiator Coolant Temperature Sensor2-Way Femalewith Leadsor Si Elec Code: B34KCharge Air Cooler Coolant Temperature SensorInlet2-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3918	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3918 Black Fits: Si Elec Code: Q14AExhaust Gas Recirculation Valve 1.75MM25-Way Femalewith Leadsor Si Elec Code: Q14BExhaust Gas Recirculation Valve 2.75MM25-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	84928314	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84928314 Black Si Elec Code: X961Engine To Valve Rocker Arm Oil Control Valve Extension Harness8-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3151	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3151 Black Si Elec Code: Q22Intake Manifold Tuning Solenoid Valve5-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3509	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3509 Black Transfer Case 2WD/4WD Actuator Position SensorSi Elec Code: B1393-Way Femalewith Leads and CPA	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	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 Airflow Control Valve6-Way Femalewith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85786014	🇺🇸 US 🇨🇦 CA	Transmission Control ModuleSi Elec Code: K71 Fitment notes — GM GENUINE 85786014 Transmission Control ModuleSi Elec Code: K71Black with Black TPA66-Way Femalewithout Leads	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: 5.3L V8, 6.2L V8	PT2930	🇺🇸 US 🇨🇦 CA	Si Elec Code: B130CGray Fitment notes — GM GENUINE PT2930 Si Elec Code: B130CGrayExhaust Gas Recirculation Temperature Sensor 32-Way Femalewith Leads	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.

Headliner Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	13529935	🇺🇸 US 🇨🇦 CA	BlackTerminal Gender: Female Fitment notes — GM GENUINE 13529935 BlackTerminal Gender: Female Fits: Si Electrical Code: B174WFront View CameraWindshield X112-Way Femalewithout Leadsor Si Electrical Code: B174Front View CameraWindshield X112-Way Femalewithout Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13577390	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13577390 Black Si Electrical Code: A10Inside Rear View Mirror X110-Way Femalewithout LeadsTerminated Leads 13575867	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	85725004	🇺🇸 US 🇨🇦 CA	FrontRight Fitment notes — GM GENUINE 85725004 FrontRightService Information Electric Code: B24RFMobile Telephone MicrophoneGray2-Way Malewith Leads0.75MM2	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	87822422	🇺🇸 US 🇨🇦 CA	SI ELEC CODE: E8SRCARGO CENTER COURTESY LAMP	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT1797	🇺🇸 US 🇨🇦 CA	Sunheadliner To HeadlinerSi Elec Code: X375 Fitment notes — GM GENUINE PT1797 Sunheadliner To HeadlinerSi Elec Code: X375Gray10-Way MaleUnsealedwithout 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.

Instrument Panel Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular Fits: 5.3L V8, 6.2L V8	84867143	🇺🇸 US 🇨🇦 CA	YellowTrailer Brake Control Switch Fitment notes — GM GENUINE 84867143 YellowTrailer Brake Control SwitchSi Elec Code: S76.75MM24-Way Femalewith Leads	View on Amazon
ACDELCO Fits: 5.3L V8, 6.2L V8	PT3567	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3567 GM Original Equipment SI Electric Code: S38ON/OFF VEHICLE SWITCHGRAY8-WAY FEMALEwith Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13510218	🇺🇸 US 🇨🇦 CA	YELLOWSTEERING WHEEL AIRBAG COIL X1 Fitment notes — GM GENUINE 13510218 YELLOWSTEERING WHEEL AIRBAG COIL X1SI ELEC CODE: X8521-WAY FEMALEwithout LEADS	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13519319	🇺🇸 US 🇨🇦 CA	Si Electrical Code: K56Serial Data Gateway Module X3 Fitment notes — GM GENUINE 13519319 Si Electrical Code: K56Serial Data Gateway Module X3Black with Gray TPA30-Way Femalewithout LeadsKey Index C	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13529935	🇺🇸 US 🇨🇦 CA	BlackTerminal Gender: Female Fitment notes — GM GENUINE 13529935 BlackTerminal Gender: Female Telematic Control Module X2Si Electric Code: K7312-Way Femalewithout Leads	View on Amazon
GM GENUINE Fits: 5.3L V8, 6.2L V8	13534967	🇺🇸 US 🇨🇦 CA	Si Elec Code: K9Body Control Module X1 Fitment notes — GM GENUINE 13534967 Si Elec Code: K9Body Control Module X1Black with Gray Inner Connector25-Way Femalewithout 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: 5.3L V8, 6.2L V8	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
GM GENUINE Fits: 5.3L V8, 6.2L V8	86308598	🇺🇸 US 🇨🇦 CA	Si Elec Code: B74Manifold Absolute Pressure Sensor	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
GM GENUINE Fits: 5.3L V8, 6.2L V8	86308598	🇺🇸 US 🇨🇦 CA	Si Elec Code: B35Engine Oil Level Indicator Switch	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: 5.3L V8, 6.2L V8	PT2980	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2980 Black Si Elec Code: B37BEngine Oil Pressure Sensor3-Way Femalewith Leads	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.

Oil Pump Control Valve / Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 6.2L V8	12681015	🇺🇸 US 🇨🇦 CA	Trans. Code 10L80/MHS10 speed Automatic trans. Fitment notes — GM GENUINE 12681015 Trans. Code 10L80/MHS10 speed Automatic trans.Mating Connector Use 13587326Jumper Wire	View on Amazon

This table covers the harness connectors at the Oil Pump Control 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.

Oxygen (O2) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	PT3353	🇺🇸 US 🇨🇦 CA	Fits Si Elec Code: B52FHeated Oxygen Sensor Fitment notes — GM GENUINE PT3353 Fits: Si Elec Code: B52FHeated Oxygen SensorBank 2 Sensor 2Gray4-Way Femalewith Leadsor Si Elec Code: B52DHeated Oxygen SensorBank 1 Sensor 2Gray4-Way Femalewith Leads	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.

Power Steering Assist Motor / Module Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	85873426	🇺🇸 US 🇨🇦 CA	For Vehicles Built From 25MAR20262nd Design	View on Amazon

This table covers the harness connectors at the Power Steering Assist Motor / Module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Steering Column Wiring Harness

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	84426130	🇺🇸 US 🇨🇦 CA	Power Retractable Tilt Steering Column (N38)	View on Amazon

This table covers the Steering Column Wiring harnesses.

Temperature Sender / Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	86308598	🇺🇸 US 🇨🇦 CA	Si Elec Code: B34AEngine Coolant Temperature Sensor 1	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.

Trailer Adapter Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: 5.3L V8, 6.2L V8	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 Plug	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 Brake Switch Connector

Brand	Part Number	Markets	Notes	Buy
CURT Fits: 5.3L V8, 6.2L V8	51525	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Brake Control Adapter Harness Fitment notes — CURT 51525 Brake Control Adapter Harness BlackIncludes OEM Connector2 Protective Sleeve12 GA. Wirewith Quick Plug	View on Amazon

This table covers the harness connectors at the Trailer Brake Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Trailer Connector

Brand	Part Number	Markets	Notes	Buy
CURT Popular Fits: 5.3L V8, 6.2L V8	55415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM Socket	View on Amazon
CURT Popular Fits: 5.3L V8, 6.2L V8	56229	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	7-Way USCAR Electrical ConnectorLength: 24 in. Fitment notes — CURT 56229 7-Way USCAR Electrical ConnectorLength: 24 in.Bonded Wire	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	56415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM SocketTwist-In	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	55515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring ConnectorOE 4-Way Flat Fitment notes — CURT 55515 Custom Wiring ConnectorOE 4-Way FlatPlugs Into USCAR Replacement2-Wire System	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	56515	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Connector5-Way Flat Fitment notes — CURT 56515 Custom Wiring Connector5-Way Flat 2-Wire System	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	55774	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	57015	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	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 System	View on Amazon
CURT Fits: 5.3L V8, 6.2L V8	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: 5.3L V8, 6.2L V8	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 System5 Way Flat	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: 5.3L V8, 6.2L V8	56475	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Custom Wiring Harness Extension Fitment notes — CURT 56475 Custom Wiring Harness Extension 20"Uscar To Uscar	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
GM GENUINE Fits: 5.3L V8, 6.2L V8	24055323	🇺🇸 US 🇨🇦 CA	End 1 Terminal Gender: Male Female Fitment notes — GM GENUINE 24055323 End 1 Terminal Gender: Male Female Trans. code 10L80/MHS10 speed Automatic trans.GEN2PASS-THRUETRS 4WDTransmission Code 10L80/MHS10 speed Automatic trans.GEN2Pass-ThruEtrs	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 Purge Valve / Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Fits: 5.3L V8, 6.2L V8	86308598	🇺🇸 US 🇨🇦 CA	Si Elec Code: Q12Evaporative Emission Canister Purge Solenoid Valve	View on Amazon

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

Buying Electrical Connector Parts for a 2026 GMC Yukon

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

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

Start with the largest groups on this page: Engine Wiring Harness / Connector and Trailer Connector .

Frequently Asked Questions

How many electrical connector parts fit the 2026 GMC Yukon?

Our catalog currently lists 71 electrical connector parts for the 2026 GMC Yukon across 25 subcategories and 3 brands, covering all 3 engine options (3.0L L6 DIESEL Turbocharged, 5.3L V8 and 6.2L V8). Each part is matched to the engine(s) it fits.

Do electrical connector parts differ between 2026 GMC Yukon engines?

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

What are the signs of electrical connector problems on a 2026 GMC Yukon?

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 2026 GMC Yukon 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 2026 GMC Yukon?

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 2026 GMC Yukon

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 Yukon Years

2025 GMC Yukon 2024 GMC Yukon 2023 GMC Yukon 2022 GMC Yukon 2021 GMC Yukon 2020 GMC Yukon

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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