GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Set the parking brake.
  2. Set the gear selector to N (Neutral).
  3. Disconnect the electrical connector.
  4. Remove the electrical connector from the switch.
  5. Remove the linkage retaining nut.
  6. Remove the cable and the lever.

  7. Object Number: 97455  Size: SH
  8. Remove the park/neutral position switch.

Installation Procedure

Tools Required

J 41545 Switch Alignment Tool

    Important: New replacement park/neutral position switches already are pinned in the N (Neutral) position.


    Object Number: 97456  Size: SH
  1. Verify that the transmission still is in the N (Neutral) position. If the position has moved, rotate the shaft clockwise from P (Park) through R (Reverse) into N (Neutral). Do not to damage the shaft flats, corners, or threads.
  2. • When installing a park/neutral position switch with a sheared pin, insert the alignment tool into the 2 slots on the switch in the area of the transmission shaft. Rotate the tool until the rear leg on the tool falls into the slot on the switch near the hose.
    • Verify that the tool is seated properly in all 3 slots.
    • Remove the tool.
    • Check for a cracked carrier if either of the following conditions exist:
       • The pin is sheared
       • You are installing the original switch

    Object Number: 97455  Size: SH
  3. Install the park/neutral position switch.
  4. • Align the flats in the park/neutral position switch with the transmission manual shaft flats.
    • Press the park/neutral position switch onto the shaft. Fully seat the switch against the transmission
  5. With the alignment tool, verify the alignment of the switch before tightening the bolts.
  6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Install the bolts.
  8. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  9. Remove the alignment tool.
  10. Install the cable and the lever.
  11. Install the linkage retaining nut.
  12. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  13. Connect the electrical connector to the switch.
  14. Notice: Check the shifter for normal freedom of movement and proper shift cable adjustment. Make sure that the vehicle has the correct shift control cable, bracket, and shift lever. The bracket and lever are marked as follows: G V8.

    Important: 

       • Set the parking brake.
       • After the park/neutral switch installation, verify that the engine starts only in P (Park) or N (Neutral). If the engine starts in any other position, readjust the park/neutral position switch.
       • If DTCs are present, refer to Electrical Diagnosis.

  15. Connect the electrical connectors.