GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41364-A Park Neutral Switch Aligner

Removal Procedure


    Object Number: 1284299  Size: SH
  1. Apply the park brake.
  2. Shift the transmission into neutral.
  3. If equipped with 4-wheel drive (4WD), remove the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Disconnect the park/neutral position (PNP) switch electrical connector (2).

  6. Object Number: 1480483  Size: SH
  7. Remove the manual shaft lever nut.
  8. Remove the transmission control lever from the manual shaft.
  9. Remove the PNP switch bolts.
  10. Remove the PNP switch from the manual shaft. If the PNP switch did not slide off the manual shaft, file the outer edge of the manual shaft in order to remove any burrs.

Installation Procedure


    Object Number: 1480483  Size: SH
  1. Install the PNP switch to the transmission manual shaft by aligning the switch hub flats with the manual shaft flats.
  2. Slide the PNP switch onto the transmission manual shaft until the switch mounting bracket contacts the mounting bosses on the transmission.
  3. Important: If a NEW PNP switch is being installed, the switch will come with a positive assurance bracket. The positive assurance bracket aligns the new switch in its proper position for installation and the use of the park neutral switch aligner will not be necessary.

  4. Install the PNP switch bolts finger tight.

  5. Object Number: 102270  Size: SH
  6. Install J 41364-A onto the PNP switch. Ensure that the two slots on the switch where the manual shaft is inserted are lined up with the lower two tabs on the tool.
  7. 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.

  8. Rotate the tool until the upper locator pin on the tool is lined up with the slot on the top of the switch.
  9. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  10. Remove the J 41364-A from the switch. If installing a new switch, remove the positive assurance bracket at this time.
  11. Install the transmission control lever to the manual shaft with the nut.
  12. Tighten
    Tighten the nut to 25 N·m (18 lb ft).


    Object Number: 1284299  Size: SH
  13. Connect the PNP switch electrical connector (2).
  14. If equipped with 4WD, install the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  15. Lower the vehicle.
  16. Check the switch for proper operation. The engine must start in the park (P) or neutral (N) positions only. If proper operation of the switch can not be obtained, replace the switch.