GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 785877  Size: SH
  3. Remove the transmission manual shift shaft nut.
  4. Disconnect the shift linkage from the transmission.
  5. Place the transmission in NEUTRAL by rotating the transmission shift shaft clockwise 2 clicks.
  6. Remove the exhaust system. Refer to Exhaust System Replacement .

  7. Object Number: 801931  Size: SH
  8. Disconnect the propeller shaft coupler (1) from the transmission flange. Refer to Propeller Shaft Replacement .
  9. Push the front propeller shaft toward the rear of the vehicle in order to release the propeller shaft coupler (1) from the transmission flange.

  10. Object Number: 787650  Size: SH
  11. Secure the front propeller shaft (1) to the shift control lever (3) with a piece of mechanic's wire (2).
  12. Remove the transmission fluid pan. Refer to Automatic Transmission Fluid and Filter Replacement .

  13. Object Number: 795918  Size: SH
  14. Using 2 equally sized suitable blocks of wood and a suitable transmission jack positioned under the transmission pan area. Support the transmission case on both sides with the wood blocks to prevent the transmission internal components from contacting the transmission jack.
  15. Remove the transmission support. Refer to Transmission Support Replacement .
  16. Remove the extension housing. Refer to Case Extension and Gasket Replacement .

  17. Object Number: 854136  Size: SH
  18. Remove the parking pawl spring.
  19. Remove the parking pawl pivot pin.
  20. Remove the parking pawl.
  21. Inspect the following:
  22. • Parking pawl tooth for chipping or wear
    • Parking pawl spring for over expansion
    • Pivot pin for scoring, excessive wear

Installation Procedure


    Object Number: 830384  Size: SH
  1. Install the parking pawl (3).
  2. Install the pivot pin (1).
  3. Install the parking pawl spring (2). The straight end of the spring locates against the case and the hooked end locates over the parking pawl.
  4. Install the extension housing. Refer to Case Extension and Gasket Replacement .
  5. Install the transmission support. Refer to Transmission Support Replacement .
  6. Remove the transmission jack.
  7. Install the transmission fluid pan. Refer to Automatic Transmission Fluid and Filter Replacement .

  8. Object Number: 787650  Size: SH
  9. Remove the mechanic's wire (2) securing front propeller shaft (1) to the shift control lever (3).

  10. Object Number: 801931  Size: SH
  11. Install the propeller shaft coupler (1) to the transmission flange. Refer to Propeller Shaft Replacement .
  12. Install the exhaust system. Refer to Exhaust System Replacement .

  13. Object Number: 785877  Size: SH
  14. Place the transmission in the park position by rotating the shift shaft fully counterclockwise.
  15. Connect the shift linkage to the transmission.
  16. Notice: Refer to Fastener Notice in the Preface section.

  17. Install the transmission manual shift shaft nut.
  18. Tighten
    Tighten the transmission manual shift shaft nut to 15 N·m (11 lb ft).

  19. Fill the transmission to the proper level. Refer to Transmission General Specifications , Fluid Capacity Specifications , and Transmission Fluid Check .
  20. Lower the vehicle.