4L80-E/4L85-E

Park/Neutral Position Switch Adjustment

Important:
^ The following procedure is for vehicles that have not had the switch removed or replaced. If the switch has been removed or replaced,
^ Apply the parking brake.
^ The engine must start in the P (Park) or N (Neutral) positions only.
^ Check the switch for proper operation. If 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.
^ Tighten the bolts to 25 Nm (18 lb ft).
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.