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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Repair Instructions >> Park/Neutral Position Switch Adjustment

Park/Neutral Position Switch Adjustment

WARNING: This page is about a different car, the 2003 GMC Yukon XL, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Important 

  1. Place the shift lever in the neutral (N) position.
  2. With an assistant in the drivers seat, raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  3. Loosen the PNP switch bolts.
  4. With the vehicle in neutral (N), rotate the PNP switch while the assistant attempts to start the engine.
  5. Following a successful start, turn the engine off.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  6. Tighten the PNP switch bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

  7. Lower the vehicle.
  8. Check the PNP switch for proper operation. The engine must start in the park (P) or neutral (N) positions only.
  9. Replace the PNP switch if proper operation can not be achieved. Refer to PARK/NEUTRAL POSITION SWITCH REPLACEMENT .