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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Automatic Transmission Servicing (4L80-E)) >> Adjustments >> Park/Neutral Position Switch

Park/Neutral Position Switch

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

With an assistant in driver's seat, raise and support vehicle. The transmission must be in the Park or Neutral positions only. Loosen the Park/Neutral Position (PNP) switch retaining bolts and rotate the switch slightly, while assistant attempts to start engine. After engine starts, turn engine OFF. Tighten PNP switch bolts to specification. See TORQUE SPECIFICATIONS  . Ensure vehicle does not start in any range other than Park and Neutral. Replace PNP switch if proper operation cannot be achieved. See PARK/NEUTRAL POSITION SWITCH  under REMOVAL & INSTALLATION.