GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 12351  Size: MH
  1. Set park brake.
  2. Set gear selector lever to Neutral (N).
  3. PNP switch and transaxle range switch electrical connectors.
  4. Nut securing linkage cable to transaxle manual shaft.
  5. Linkage cable from manual shaft
  6. Two bolts securing PNP switch to transaxle.
  7. PNP switch.

Installation Procedure

Important: After the PNP switch has been installed, verify that the engine only starts in Park and Neutral. If the engine starts in any other position, readjust the PNP switch.


    Object Number: 12351  Size: MH
  1. Verify that the transaxle manual shaft is still in the Neutral position. If it has been moved, rotate the shaft clockwise from Park through Reverse into Neutral. Be careful not to damage the shaft flats, corners, or threads.
  2. PNP switch.
  3. • Align the flats in the PNP switch with the flats on the transaxle manual shaft.
    • Press the PNP switch onto the shaft and fully seat the PNP switch against the transaxle.
  4. If reinstalling the original PNP switch, adjust PNP switch (refer to Transaxle Park Neutral Position (PNP) Switch / Transaxle Range Switch Adjustment procedure). New replacement PNP switches are already pinned in the Neutral position.
  5. Electrical connectors
  6. Linkage cable onto manual shaft.
  7. Nut securing linkage cable to manual valve.

Adjustment Procedure


    Object Number: 12356  Size: SH
  1. Place the transaxle shift lever in the Neutral position.
  2. Remove nut securing linkage cable to transaxle manual shaft.
  3. Remove linkage cable from manual shaft.
  4. Loosen the two PNP switch attaching bolts.
  5. Place tool J 41545 onto manual shaft so that slots on the manual shaft engage the tool.
  6. Rotate the PNP switch on the manual shaft to align the adjustment slot on the switch with the leg on the tool.
  7. Tighten
    The PNP switch attaching bolts to 28 N·m (20 lb. ft.).

  8. Remove tool J 41545.
  9. Install linkage cable to manual shaft.
  10. Install nut securing linkage cable to transaxle manual shaft.