Express 3/4 Ton Van V8-4.8L VIN V (2003)
Neutral Safety Switch: Adjustments
4L80-E/4L85-E
Park/Neutral Position Switch Adjustment
Important:
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The following procedure is for vehicles that have not had the switch removed or replaced. If the switch has been removed or replaced, refer to
Park/Neutral Position Switch Replacement for the proper adjustment procedure
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Apply the parking brake.
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The engine must start in the P (Park) or N (Neutral) positions only.
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Check the switch for proper operation. It adjustment is required, proceed as follows:
1. Place the transmission range selector in the N (Neutral) position.
2. With an assistant in the drivers seat, raise the vehicle. Refer to Vehicle Lifting.
3. Loosen the park/neutral position switch mounting bolts.
4. With the vehicle in the N (Neutral) position, rotate the switch while the assistant attempts to start the engine.
5. Following a successful start, turn the engine off.
Notice: Refer to Fastener Notice in Service Precautions.
6. Tighten the bolts securing the switch to the transmission.
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Tighten the bolts to 25 Nm (18 ft. lbs.).
7. Lower the vehicle.
8. Check the switch for proper operation. The engine must start in the P (Park) or N (Neutral) positions only.
9. Replace the park/neutral position switch if proper operation can not be achieved.
