GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 28467-B Universal Engine Support Fixture

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the battery negative cable assembly from the battery negative terminal.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle
  3. Support the vehicle with safety stands.
  4. Remove the right front wheel and tire. Refer to Tire and Wheel Removal and Installation
  5. Remove the right front wheel splash shield. Refer to Front Bumper Fascia Extension Replacement
  6. Remove the right stabilizer link at the steering knuckle. Refer to Stabilizer Shaft Insulator Replacement
  7. Remove the right tie rod from the steering knuckle. Refer to Rack and Pinion Outer Tie Rod End Replacement
  8. Remove the right ball joint from the steering knuckle. Refer to with V4U/B9Q or Lower Control Arm Ball Joint Replacement
  9. Remove the right drive axle. Refer to Wheel Drive Shaft Replacement
  10. Remove the safety stands.
  11. Lower the vehicle.
  12. Important : Load the support fixture by tightening the wing nuts several turns in order to take the weight of the powertrain off of the mounts and the frame.


    Object Number: 97528  Size: SH
  13. Install the J 28467-B .
  14. Raise the left side of the powertrain (the transmission side) 25.4 mm (1.0 in) above the powertrain resting position with the adjusting screws.
  15. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  16. Support the vehicle with safety stands.
  17. Remove the following parts:
  18. 16.1. The power steering pressure switch electrical connector
    16.2. The wiring harness
  19. Remove the following parts:
  20. 17.1. The right transmission mount
    17.2. The bracket connector
    17.3. The wiring harness
  21. Remove the following parts:
  22. 18.1. The right transmission to engine bracket
    18.2. The heat shield
  23. Remove the following parts:
  24. 19.1. The vehicle speed sensor (VSS) electrical connector
    19.2. The ground wire from the case

    Object Number: 97496  Size: SH
  25. Remove the five case extension bolts and the stud using a torque wrench.
  26. Remove the case extension and the seal. The seal may remain in the extension.
  27. Remove the roller thrust bearing and the selective washer.

  28. Object Number: 97498  Size: SH
  29. Remove the scavenger tube attaching bolt.
  30. Remove the scavenger tube by prying on the differential.
  31. Remove the scavenger tube seal.
  32. Inspect the scavenger tube for damage and clogging.
  33. Inspect the case extension and the case mating surfaces for scoring and damage.
  34. Remove the case extension.

  35. Object Number: 97516  Size: SH
  36. Remove the following parts:
  37. 29.1. The snap ring
    29.2. The parking gear
    29.3. The thrust bearing

Installation Procedure


    Object Number: 97516  Size: SH
  1. Install the parking gear with the thrust bearing.
  2. Install the snap ring.
  3. Install the final drive internal gear.
  4. Install the snap ring.
  5. Install the sun gear with the bushing and the seal side facing differential.
  6. Install the final drive carrier. Turn the unit until it meshes with the sun gear and the internal gear teeth.
  7. Install the left thrush washer.
  8. Install the left deferential side gear.
  9. Install the snap ring.
  10. Use the manual shaft to place the transaxle in park.
  11. This will lock up the final drive unit. The actuator rod will move up.

    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.

  12. Install the differential housing and the four bolts. Hand tighten, using a star pattern.
  13. Tighten
    Tighten the bolts to 76 N·m (56 lb ft).


    Object Number: 97498  Size: SH
  14. Install the scavenger tube seal into the case.
  15. Install the scavenger tube into the case. Tap the scavenger tube in lightly using a plastic hammer. The rib on the pipe will remain exposed. This is a normal condition.
  16. Install the scavenger tube bolt.
  17. Tighten
    Tighten the bolt to 13 N·m (116 Ib in).


    Object Number: 97496  Size: SH
  18. Install the selective washer and the thrust roller bearing onto the differential output shaft.
  19. Insert the case extension seal into the case extension.
  20. Install the case extension onto the case.
  21. Install the bolts and the stud. Install the stud in the 11 o'clock position using the star pattern.
  22. Tighten
    Tighten the bolts and the stud to 54 N·m (40 Ib ft).

  23. Install the vehicle speed sensor (VSS) electrical connector and the ground wire to the case.
  24. Install the right transmission to engine bracket and the heat shield.
  25. Install the right transmission mount and the bolts.
  26. Install the power steering pressure switch connector and the wiring harness.
  27. Install both drive axles into the transmission. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
  28. Install the RTD sensor to the lower control arm.
  29. Install the right front wheel splash shield. Refer to Front Bumper Fascia Extension Replacement .
  30. Install the right front wheel and tire. Refer to Tire and Wheel Removal and Installation .
  31. Remove the safety stands.
  32. Lower the vehicle.
  33. Connect the battery negative cable assembly to the battery negative terminal.
  34. Tighten
    Tighten the terminal bolt to 15 N·m (11 lb ft).

  35. Install the case extension and the scavenger pipe.
  36. Check the fluid level.
  37. Reset the Transmission fluid life indicator.