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.
2006 Hummer H3 L5-3.5LFACTORY OEM SERVICE PROCEDURE
Accelerator Pedal Position Sensor: Service and Repair
ACCELERATOR PEDAL POSITION (APP) SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Disconnect the accelerator pedal position (APP) sensor electrical connector.
2. Remove the accelerator pedal/APP sensor nuts.
3. Remove the accelerator pedal/APP sensor from the vehicle.
INSTALLATION PROCEDURE
1. Install the accelerator pedal/APP sensor over the studs.
2. Install the accelerator pedal/APP sensor nuts.
Tighten the nuts to 9 N.m (80 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
3. Connect the APP sensor electrical connector.
4. Inspect below the pedal for binding, to ensure full range of motion.
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.
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