Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Chevrolet Impala V6-3.5LFACTORY OEM SERVICE PROCEDURE
Accelerator Pedal Position Sensor: Service and Repair
Accelerator Pedal Position Sensor Replacement
Removal Procedure
1. Remove the left instrument panel (I/P) sound insulator.
2. Disconnect the accelerator pedal position (APP) sensor electrical connector (1).
3. Remove the APP sensor assembly bolts.
4. Remove the APP sensor assembly from the vehicle.
Installation Procedure
1. Position the APP sensor assembly to the vehicle.
Notice: Refer to Fastener Notice.
2. Install the APP sensor assembly bolts.
Tighten the bolts to 5 N.m (44 lb in).
3. Connect APP sensor electrical connector (1).
4. Install the left I/P sound insulator.
Factory Service Tools
Use the Manual With the Right Hardware
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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.