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.
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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 925 (AUTOMATIC TRANSMISSION - 4L60-E/4L65-E (INTRODUCTION, SERVICE & REPLACEMENT))REPAIR INSTRUCTIONSPARK/NEUTRAL POSITION SWITCH ADJUSTMENT
2002 Chevrolet Avalanche 2500, RWD
Park/Neutral Position Switch Adjustment
2002 Chevrolet Avalanche 2500, RWDSECTION Park/Neutral Position Switch Adjustment
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
- The following procedure is for vehicles that have not had the park/neutral position (PNP) switch removed or replaced. If the PNP switch has been removed or replaced, refer to Park/Neutral Position Switch Replacement for the proper adjustment procedure.
- Apply the park brake.
- The engine must start in the park (P) or neutral (N) positions only.
- Check the PNP switch for proper operation. If adjustment is required, proceed as follows:
- Place the transmission range selector in the neutral (N) position.
- With an assistant in the drivers seat, raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Loosen the park/neutral position (PNP) switch bolts.
- With the vehicle in the neutral (N) position, rotate the switch while the assistant attempts to start the engine.
- Following a successful start, turn the engine off.
- Tighten the PNP switch bolts.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).
- Lower the vehicle.
- Check the PNP switch for proper operation. The engine must start in the park (P) or neutral (N) positions only.
- Replace the PNP switch if proper operation can not be achieved. Refer to Park/Neutral Position Switch Replacement .
NOTE:
Refer to Fastener Notice in Cautions and Notices.
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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.