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Home >> Hummer >> 2008 >> H3 Luxury, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> On-Vehicle Repair Information >> Park/Neutral Position and Backup Lamp Switch Adjustment

Park/Neutral Position and Backup Lamp Switch Adjustment

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. 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 switch removed or replaced. If the switch has been removed or replaced, refer to Park/Neutral Position and Backup Lamp Switch Replacement  for the proper adjustment procedure.
  • 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 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 .
  6. 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).

  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. Refer to Park/Neutral Position and Backup Lamp Switch Replacement .
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