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Home >> Hummer >> 2008 >> H3 Adventure, Automatic >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 4L60-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> On-Vehicle Repair Instructions >> Park/Neutral Position and Backup Lamp Switch Adjustment

Park/Neutral Position and Backup Lamp Switch Adjustment

IMPORTANT:
  1. Place the transmission range selector in the N (NEUTRAL) position.
  2. With an assistant in the drivers seat, raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  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.
  6. NOTE: Refer to Fastener Notice .
  7. Tighten the bolts securing the park/neutral back up switch to the transmission.

    Tighten:  Tighten the park/neutral back up switch bolts to 27 N.m (20 lb ft).

  8. Lower the vehicle.
  9. Check the switch for proper operation. The engine must start in the P (PARK) or N (NEUTRAL) positions only.
  10. Replace the park/neutral position switch if proper operation can not be achieved. Refer to Park/Neutral Position and Backup Lamp Switch Replacement (3.7L)  or Park/Neutral Position and Backup Lamp Switch Replacement (5.3L) .