GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 41545 Park/Nuetral Switch Aligner

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

  6. Object Number: 97456  Size: SH
  7. Remove the park/neutral position switch.

Installation Procedure

Tools Required

J 41545 Park/Neutral Switch Aligner


    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). Be careful not to damage the shaft flats, corners, or threads.
  2. • New replacement park/neutral position switches already are pinned in the N (Neutral) position.
    • When installing a park/neutral position switch with a sheared pin, insert the alignment tool J 41545 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

    Important: 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.

    Important: Check the shifter for normal freedom of movement. Refer to Engine Controls for diagnosis if DTC(s) are present.


    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.

    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.

  5. Install the bolts.
  6. With the alignment tool, verify the alignment of the switch before tightening the bolts.
  7. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

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

  12. Connect the electrical connectors.