Accelerator Pedal Position Sensor: Service and Repair

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Accelerator Pedal Position Sensor Replacement

Removal Procedure




1. Remove the left instrument panel (I/P) insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side (Enclave) Instrument Panel Insulator Panel Replacement - Left SideInstrument Panel Insulator Panel Replacement - Left Side (Acadia) Instrument Panel Insulator Panel Replacement - Left SideInstrument Panel Insulator Panel Replacement - Left Side (Traverse) Instrument Panel Insulator Panel Replacement - Left Side.

2. Remove the driver knee bolster. Refer to Driver Knee Bolster Replacement (Acadia) Service and RepairDriver Knee Bolster Replacement (Traverse) Service and RepairDriver Knee Bolster Replacement (Enclave) Service and Repair.

3. Remove the I/P wiring harness electrical connector (2) from the accelerator pedal position (APP) sensor assembly.





Note: Due to clearance issues, the upper attachment bolt cannot be removed from the APP sensor assembly. Loosen the bolt completely and leave the bolt in the component until the assembly is removed from the vehicle.

4. Remove the APP sensor bolts and sensor assembly from the vehicle.

Installation Procedure




1. Install the upper bolt into the APP sensor assembly.

2. Install the APP sensor assembly into the vehicle.

Caution: Refer to Fastener Caution Fastener Caution.

3. Install the remaining 2 lower APP sensor assembly bolts.

Tighten the bolts to 8 Nm (71 lb in).




4. Install the I/P wiring harness electrical connector (2) to the APP sensor assembly.

5. Install the driver knee bolster. Refer to Driver Knee Bolster Replacement (Acadia) Service and RepairDriver Knee Bolster Replacement (Traverse) Service and RepairDriver Knee Bolster Replacement (Enclave) Service and Repair.

6. Install the left I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side (Enclave) Instrument Panel Insulator Panel Replacement - Left SideInstrument Panel Insulator Panel Replacement - Left Side (Acadia) Instrument Panel Insulator Panel Replacement - Left SideInstrument Panel Insulator Panel Replacement - Left Side (Traverse) Instrument Panel Insulator Panel Replacement - Left Side.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.