2026 GMC Acadia Electrical Connector Parts: OEM & Replacement (74 Parts)

The 2026 GMC Acadia has 74 electrical connector parts with verified fitment on this page — 20 part types and 3 brands, covering the 2.5L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.

On the 2026 GMC Acadia, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 35 parts of the 74 listed are Engine Wiring Harness / Connector (12 parts), Trailer Connector (12 parts) and Body Wiring Harness / Connector (11 parts). The other 17 part types cover the remaining 39 parts.

Body Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular	PT3702	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3702 Black Fits: Si Electrical Code: B63RRGAirbag Side Impact Rear SensorRight2-Way Femalewith Leads1.5mmor Si Elec Code :B58LAirbag Front End Discriminating SensorLeft2-Way Femalewith Leads1.5mmor Si Electrical Code: B63LRGAirbag Side Impact Rear SensorLeft2-Way Femalewith Leads1.5mm	View on Amazon
GM GENUINE Popular	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Si Elec Code :B20ABrake Fluid Level Indicator Switch2-Way Femalewith Leads	View on Amazon
GM GENUINE Popular	84928314	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84928314 Black Si Elec Code :E13RAFront HeadlampRight8-Way Femalewith Leads	View on Amazon
ACDELCO	PT3743	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3743 GM Original Equipment Fits: SI Electric Code: T10ELOW FREQUENCY REAR COMPARTMENT ANTENNABLACK2-WAY FEMALEwith Leadsor SI Electric Code: T10GLOW FREQUENCY REAR BUMPER ANTENNABLACK2-WAY FEMALEwith Leads	View on Amazon
GM GENUINE	PT3720	🇺🇸 US 🇨🇦 CA	Si Elec Code: F112PGray with Yellow Cover Fitment notes — GM GENUINE PT3720 Si Elec Code: F112PGray with Yellow CoverFront Seat Belt RetractorPassenger X22-Way Femalewith Leads	View on Amazon
GM GENUINE	87815146	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 87815146 Black Terminating ResistorHigh Speed Can Bus 8 ASi Elec Code : R6AHA2-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3906	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3906 Black Fits: Si Elec Code: B5RFFront Wheel Speed SensorRight2-Way Femalewith Leadsor Si Elec Code: B5LFFront Wheel Speed SensorLeft2-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3779	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3779 Black Si Elec Code: S144ARear Seat Back Folding Switch2nd Row Rear Compartment.75mm28-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3667	🇺🇸 US 🇨🇦 CA	Fits Si Elec Code :K182Parking Assist Control Module X2 Fitment notes — GM GENUINE PT3667 Fits: Si Elec Code :K182Parking Assist Control Module X2Gray.75mm8-Way Femalewith Leadsor Si Elec Code :S144BGray.75mm8-Way Femalewith Leads3rd Row Seat Folding SwitchRear Compartment	View on Amazon
GM GENUINE	PT2888	🇺🇸 US 🇨🇦 CA	Windshield Wiper MotorService Information Electrical Code: M75 Fitment notes — GM GENUINE PT2888 Windshield Wiper MotorService Information Electrical Code: M75Gray5-Way Femalewith Leads	View on Amazon
GM GENUINE	19352907	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19352907 Black Fits: SI ELEC CODE: E13RAFRONT HEADLAMPRIGHT12-WAY FEMALEwithout LEADS or: Si Elec Code: E42LRear Body Structure Stop LampLeft12-Way Femalewithout Leadsor Si Elec Code: K42RRear Body Structure Stop LampRight12-Way Femalewithout 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.

Crankshaft Position Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	86792095	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 86792095 Black Si Elec Code : B26Crankshaft Position Sensor3-Way Femalewith Leads	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.

Differential Lock Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	85514401	🇺🇸 US 🇨🇦 CA	AWDElectronic Twin Clutch Positraction Axle (G99)	View on Amazon
GM GENUINE	85783337	🇺🇸 US 🇨🇦 CA	4WDDenali or Denali Ultimate or Elevation Fitment notes — GM GENUINE 85783337 4WDDenali or Denali Ultimate or ElevationExcept Electronic Twin Clutch Positraction Axle (G99)	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.

Engine Block Heater Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	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	PT2923	🇺🇸 US 🇨🇦 CA	Crimping Tool Included: NoLength: 12 in Fitment notes — GM GENUINE PT2923 Crimping Tool Included: NoLength: 12 inBlack Fits: Si Elec Code:M163Intake/Single Camshaft Position Actuator X24-Way Femalewith Leadsor Si Elec Code:X111Engine To Oil Pump Flow Control Solenoid Valve Wiring Harness4-Way Femalewith Leads	View on Amazon
GM GENUINE Popular	PT2971	🇺🇸 US 🇨🇦 CA	Gender: MaleTerminal Type: Blade Fitment notes — GM GENUINE PT2971 Gender: MaleTerminal Type: BladeBlack Starter X1Si Elec Code : M642-Way Femalewith Leads	View on Amazon
GM GENUINE Popular	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 Leadsor Si Elec Code: X135Engine To EVAP Emission Canister Vent Valve Solenoid Jumper Wiring2-Way Femalewith Leads	View on Amazon
ACDELCO	PT3743	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3743 GM Original Equipment TURBOCHARGER BYPASS VALVE SOLENOIDSI Electric Code: Q40BLACK2-WAY FEMALEwith Leads	View on Amazon
ACDELCO	84785110	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO 84785110 GM Original Equipment TRANSMISSION FLUID PRESSURE ACCUMULATOR SOLENOID VALVEBLACK.75MM22-WAY FEMALEwith Leads	View on Amazon
ACDELCO	PT3698	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3698 GM Original Equipment Si Elec Code : G58Evaporative Emission Canister Purge PumpBlack.75MM26-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3702	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3702 Black Si Electrical Code: Q46A/C Compressor Solenoid Valve2-Way Femalewith Leads1.5mm	View on Amazon
GM GENUINE	85519071	🇺🇸 US 🇨🇦 CA	Black or Color: Natural Fitment notes — GM GENUINE 85519071 Black or Color: Natural Si Elec Code: B65Manifold Absolute Pressure and Intake Air Temperature Sensor4-Way Femalewith Leads	View on Amazon
GM GENUINE	13577534	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13577534 Black Si Elec Code : G18Fuel PumpHigh Pressure2-Way Femalewith Leads	View on Amazon
GM GENUINE	PT2931	🇺🇸 US 🇨🇦 CA	Si Electric Code: Q6EGray Fitment notes — GM GENUINE PT2931 Si Electric Code: Q6EGrayCamshaft Position Actuator Solenoid ValveExhaust2-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3534	🇺🇸 US 🇨🇦 CA	BlackShape: Oval Fitment notes — GM GENUINE PT3534 BlackShape: Oval Fits: Throttle BodySi Elec Code : Q386-Way Femalewith Leadsor Turbocharger Wastegate ActuatorSi Elec Code : M1286-Way Femalewith Leads	View on Amazon
GM GENUINE	85079961	🇺🇸 US 🇨🇦 CA	SI ELEC CODE : K45ENGINE COOLANT FLOW CONTROL VALVE Fitment notes — GM GENUINE 85079961 SI ELEC CODE : K45ENGINE COOLANT FLOW CONTROL VALVEBLOCK93-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.

Fuel Injector Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	13584788	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 13584788 Black SI ELEC CODE : X160ENGINE TO FUEL INJECTOR WIRING HARNESS16-WAY FEMALEwithout LEADS	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.

Headlamp Wiring Harness / Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular	84677313	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84677313 Black Si Elec Code: B233BForward Range Radar SensorLong Range.75mm28-Way Femalewith Leads	View on Amazon
GM GENUINE	PT3702	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3702 Black Si Electrical Code: B58RAirbag Front End Discriminating SensorRight2-Way Femalewith Leads1.5mm	View on Amazon
GM GENUINE	PT3776	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3776 Black Si Elec Code : B55Engine Compartment Cover Switch3-Way Femalewith Leads0.75MM2	View on Amazon
GM GENUINE	13593220	🇺🇸 US 🇨🇦 CA	Windshield Washer Solvent Container Level SensorSi Elec Code: B118B Fitment notes — GM GENUINE 13593220 Windshield Washer Solvent Container Level SensorSi Elec Code: B118BGray2-Way Femalewith Leads	View on Amazon
GM GENUINE	19352907	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19352907 Black Service Information Electrical Code: E13LAFront HeadlampLeft12-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 Popular	PT2726	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2726 Black Si Electrical Code: B174WFront View CameraWindshield2-Way Malewith LeadsSquare	View on Amazon
GM GENUINE Popular	84677313	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84677313 Black Si Elec Code:K313Interior Object Detection Module.75MM28-Way Femalewith Leads	View on Amazon
GM GENUINE	13529935	🇺🇸 US 🇨🇦 CA	BlackTerminal Gender: Female Fitment notes — GM GENUINE 13529935 BlackTerminal Gender: Female Si Electrical Code: B174WFront View CameraWindshield12-Way Femalewithout Leads	View on Amazon
GM GENUINE	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	19354840	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 19354840 Black Fits: Si Elec Code : B396LFMobile Telephone Headliner MicrophoneLeft Front4-Way Femalewith Leads0.35mmor Si Elec Code : B396RFMobile Telephone Headliner MicrophoneRight Front4-Way Femalewith Leads0.35mmor Si Electric Code: E37HRoof Rail Rear Seat Position Read and Courtesy LampLT4-Way Femalewith Leads0.35mmor Si Electric Code: E37JRoof Rail Rear Seat Position Read and Courtesy LampRT4-Way Femalewith Leads0.35mm	View on Amazon
GM GENUINE	84847258	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84847258 Black Fits: Si Elec Code: B160Inside Air Moisture and Windshield Temperature Sensor4-Way Malewith Leads0.75MM2 or: Windshield Outside Moisture/Ambt LGT and Humidity SENSi Elec Code: B117A4-Way Malewith Leads0.75MM2	View on Amazon
GM GENUINE	85005020	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 85005020 Black UHF Low Energy Remote Control Access Sensor Transceiver 5Si Electric Code: B342E6-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.

Instrument Panel Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE Popular	84773558	🇺🇸 US 🇨🇦 CA	Si Elec Code : B107Natural with Black Cover Fitment notes — GM GENUINE 84773558 Si Elec Code : B107Natural with Black CoverAccelerator Pedal Position Sensor6-Way Femalewith Leads	View on Amazon
GM GENUINE Popular	PT3695	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3695 Black Si Elec Code : M8Blower Motor6-Way Femalewith Leads5MM2/.75MM2	View on Amazon
ACDELCO	84769202	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO 84769202 GM Original Equipment P29 HEAD-UP DISPLAY X1BLACK4-WAY FEMALEwith Leads	View on Amazon
ACDELCO	PT3701	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3701 GM Original Equipment Steering Column Tilt Wheel and Telescope SwitchSi Electric Code : S71Black.75MM26-Way Femalewith Leads	View on Amazon
ACDELCO	PT3972	🇺🇸 US 🇨🇦 CA	GM Original Equipment Fitment notes — ACDELCO PT3972 GM Original Equipment Fits: SI Electric Code: A22RADIO CONTROL X1BLACK6-WAY FEMALEwith Leadsor SI Electric Code: P16INSTRUMENT PANEL CLUSTER CONTROL MODULE X1BLACK6-WAY FEMALEwith Leads	View on Amazon
GM GENUINE	84724190	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE 84724190 Black Si Elec Code : E40Air Heater X24-Way Femalewith Leads	View on Amazon
GM GENUINE	84683650	🇺🇸 US 🇨🇦 CA	Si Elec Code : B22Natural Fitment notes — GM GENUINE 84683650 Si Elec Code : B22NaturalBrake Pedal Position Sensor6-Way Femalewith Leads	View on Amazon
GM GENUINE	13510218	🇺🇸 US 🇨🇦 CA	YellowSteering Wheel Airbag Coil X1 Fitment notes — GM GENUINE 13510218 YellowSteering Wheel Airbag Coil X1Si Electric Code:X8521-Way Femalewithout Leads	View on Amazon
GM GENUINE	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

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.

Mass Air Flow (MAF) Sensor Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	85518225	🇺🇸 US 🇨🇦 CA	BlackGender: Male Fitment notes — GM GENUINE 85518225 BlackGender: MaleWire Gauge Measurement (GA.): 1.0 MM2 GA. Si Elec Code : B75Mass Airflow Sensor4-Way Femalewith Leads	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 Pressure Sender / Switch Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	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 Temperature Sender Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	PT3921	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT3921 Black Si Elec Code : B36Engine Oil Temperature Sensor.75MM23-Way Femalewith Leads	View on Amazon

This table covers the harness connectors at the Oil Temperature Sender. 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	PT2923	🇺🇸 US 🇨🇦 CA	Crimping Tool Included: NoLength: 12 in Fitment notes — GM GENUINE PT2923 Crimping Tool Included: NoLength: 12 inBlack Si Elec Code:B52BHeated Oxygen Sensor 24-Way Femalewith Leads	View on Amazon
GM GENUINE	PT2922	🇺🇸 US 🇨🇦 CA	Si Elec Code : B52AHeated Oxygen Sensor 1 Fitment notes — GM GENUINE PT2922 Si Elec Code : B52AHeated Oxygen Sensor 1Gray4-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.

Park Assist (PAS) Camera Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	42969422	🇺🇸 US 🇨🇦 CA	RearAT4 Model or Elevation Fitment notes — GM GENUINE 42969422 RearAT4 Model or ElevationMono HD Digital Vision with 360 View (UV2)	View on Amazon
GM GENUINE	42969423	🇺🇸 US 🇨🇦 CA	RearDenali or Denali Ultimate Fitment notes — GM GENUINE 42969423 RearDenali or Denali UltimateMono HD Digital Vision with 360 View (UV2)	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.

Steering Column Wiring Harness

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	86540915	🇺🇸 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	PT2930	🇺🇸 US 🇨🇦 CA	Fits Service Information Electrical Code: B34FGray Fitment notes — GM GENUINE PT2930 Fits: Service Information Electrical Code: B34FGrayEngine Coolant Temperature Sensor 62-Way Femalewith Leadsor Si Elec Code : B34BGrayEngine Coolant Temperature Sensor 22-Way Femalewith Leadsor Si Elec Code : B34EGrayEngine Coolant Temperature Sensor 52-Way Femalewith Leads	View on Amazon
GM GENUINE	PT2929	🇺🇸 US 🇨🇦 CA	Black Fitment notes — GM GENUINE PT2929 Black Si Elec Code: B34AEngine Coolant Temperature Sensor 12-Way Femalewith Leads	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	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 Connector

Brand	Part Number	Markets	Notes	Buy
CURT Popular	56415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM SocketTwist-In	View on Amazon
CURT Popular	55415	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	Replacement 7-Way RV Blade OEM Socket	View on Amazon
CURT Popular	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	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	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	55774	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Vehicle to Trailer Connector with Harness7-Way and 4-Way	View on Amazon
CURT	57015	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	OEM Replacement Dual-Output 7 and 4 Way ConnectorPlugs Into USCAR Socket	View on Amazon
CURT	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	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	56538	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	4-Way Bonded Wiring Connector	View on Amazon
CURT	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
CURT	56537	🇺🇸 US 🇨🇦 CA 🇲🇽 MX	7-Way Round RV Blade Wiring Connector	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	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.

Vapor Canister Vent Valve / Solenoid Connector

Brand	Part Number	Markets	Notes	Buy
GM GENUINE	84710212	🇺🇸 US 🇨🇦 CA		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.

Buying Electrical Connector Parts for a 2026 GMC Acadia

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

Confirm you have the 2.5L L4 Turbocharged 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, 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 Acadia?

Our catalog currently lists 74 electrical connector parts for the 2026 GMC Acadia across 20 subcategories and 3 brands, covering the 2.5L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.

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

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 Acadia 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 Acadia?

Every part on this page is matched to the 2.5L L4 Turbocharged engine. 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 Acadia

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 Acadia Years

2025 GMC Acadia 2024 GMC Acadia 2023 GMC Acadia 2022 GMC Acadia 2021 GMC Acadia 2020 GMC Acadia 2019 GMC Acadia 2018 GMC Acadia

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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