GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Install the engine support fixture. Refer to Engine Support Fixture .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the power steering rack and pinion and hang the power steering rack and pinion from the exhaust pipe. Refer to Steering Gear Replacement Power Steering System.
  4. Remove the transaxle mount lower nuts. Refer to Transmission Mount Replacement .
  5. Remove the engine mount lower nuts. Refer to Engine Mount Replacement in Engine Mechanical.
  6. Remove the power steering cooler pipe from the right side of the frame.
  7. Support the rear of the frame with a jackstand.
  8. Loosen the front frame bolts. Refer to Frame Repair in Frame and Underbody.
  9. Adjust the jackstand to lower the rear of the frame.
  10. Position a drain pan under the forward servo cover.

  11. Object Number: 164777  Size: SH
  12. Remove the bolts and/or screws attaching the servo cover to the transaxle case.
  13. Remove the forward servo cover.
  14. Remove the forward servo cover O-ring.
  15. Remove the servo piston assembly.
  16. Remove the servo spring.

Installation Procedure


    Object Number: 164777  Size: SH
  1. Install the servo spring.
  2. Install the servo piston assembly.
  3. Install the forward servo cover O-ring.
  4. Install the forward servo cover.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the forward servo cover attaching bolts.
  7. Tighten
    Tighten the forward servo cover attaching bolts to 11 N·m (97 lb in).

  8. Remove the drain pan from under the forward servo cover.
  9. Adjust the jackstand to raise the rear of the frame.
  10. Install the frame bolts. Refer to Frame Repair in Frame and Underbody.
  11. Remove the support from the rear of the frame.
  12. Install the power steering cooler pipe to the right side of the frame.
  13. Install the engine mount lower nuts. Refer to Engine Mount Replacement in Engine Mechanical.
  14. Install the transaxle mount lower nuts. Refer to Transmission Mount Replacement .
  15. Install the power steering rack and pinion. Refer to Steering Gear Replacement in Power Steering.
  16. Lower the vehicle.
  17. Remove the engine support fixture. Refer to Engine Support Fixture .
  18. Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

  19. Reset the TAP values. Refer to Adapt Function .