GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39580 Power Pack Stand Engine And Transaxle Assembly Support Remove/Installer

Removal Procedure

  1. Install the engine support fixture. Refer to Engine Support Fixture for the 3.8L engine or Engine Support Fixture for the 5.3L engine.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Remove the front tires and wheels. Refer to Tire and Wheel Removal and Installation.
  4. Remove the radiator air lower baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement.
  5. Remove the positive battery cable and the retainers from the frame and position aside. Refer to Battery Positive Cable Replacement.
  6. Disconnect the power steering return hose from the frame. Refer to Power Steering Cooler Pipe/Hose Replacement.
  7. Secure the power steering return hose.
  8. Remove the stabilizer shaft links and rotate the stabilizer shaft upward to gain access to the mounting bolts in the power steering gear. Refer to Stabilizer Shaft Link Replacement.
  9. Remove the mounting bolts from the power steering gear. Refer to Steering Gear Replacement.

  10. Object Number: 378919  Size: SH
  11. Secure the power steering gear.
  12. Remove the nuts that secure the engine mount to the frame. Refer to Engine Mount Replacement - Right Side for the 3.8L engine or Engine Mount Replacement - Left Sideand Engine Mount Replacement - Right Side for the 5.3L engine.
  13. Remove the nuts which secure the transaxle mount to the frame. Refer to Transmission Mount Replacement - Left Side for the automatic transaxle.

  14. Object Number: 1209233  Size: SH
  15. If applicable, disconnect the front wheel speed sensor harness connectors.
  16. If applicable, disconnect the wheel speed sensor harness from the frame and lower control arms.
  17. If applicable, remove the retainers at the front wheel speed harness from the frame and from the lower control arms.
  18. Separate both of the lower ball joints from the steering knuckle. Refer to Lower Control Arm Replacement.
  19. Remove both front drivetrain reinforcements using the following procedure:
  20. 17.1. Remove the drivetrain reinforcement to support brace bolts.
    17.2. Remove the drivetrain reinforcement to front frame mounting stud nut.
    17.3. Remove the drivetrain reinforcement from the vehicle.

    Object Number: 333118  Size: SH
  21. Lower the vehicle until the frame contacts the J 39580 .
  22. Remove the radiator to front frame brackets.

  23. Object Number: 1208433  Size: SH
  24. Remove the bolts which secure the front frame to the body.

  25. Object Number: 1208437  Size: SH
  26. Remove the bolts which secure the rear frame to the body.
  27. Raise the vehicle in order to separate the frame from the body.
  28. If you are replacing the frame, remove the following components:
  29. • Both of the lower control arms--Refer to Lower Control Arm Replacement.
    • The stabilizer shaft--Refer to Stabilizer Shaft Replacement.
    • The spacers, the upper insulator, the lower insulator, and the retainers--Refer to Front Frame Cushion or Insulator Replacement or to Rear Frame Cushion or Insulator Replacement.

Installation Procedure


    Object Number: 333118  Size: SH
  1. If you are replacing the frame, install the following components:
  2. • Both of the lower control arms--Refer to Lower Control Arm Replacement.
    • The stabilizer shaft--Refer to Stabilizer Shaft Replacement.
    • The spacers, the upper insulator, the lower insulator, and the retainers--Refer to Front Frame Cushion or Insulator Replacement or to Rear Frame Cushion or Insulator Replacement.
  3. Position the engine support table with the frame under the vehicle.
  4. Lower the vehicle to the frame.

  5. Object Number: 1208437  Size: SH
  6. Loosely install the bolts to secure the rear frame to the body.

  7. Object Number: 1208433  Size: SH
  8. Loosely install the bolts to secure the front frame to the body.
  9. Align the frame to the body by inserting two 19 X 203 mm (0.74 X 8 in) pins in the alignment holes on the right side of the frame.
  10. Caution: Refer to Fastener Caution in the Preface section.

  11. Install the front and rear frame bolts.
  12. Tighten

        • Tighten the front bolts to 145 N·m (107 lb ft).
        • Tighten the rear bolts to 160 N·m (118 lb ft).
  13. Install the drivetrain reinforcements using the following procedure:
  14. 8.1. Position the drivetrain reinforcements to the front frame mount stud to the support brace.
    8.2. Loosely install the drivetrain reinforcement to support brace bolts.
    8.3. Install the drivetrain reinforcement to cradle mount nut.

    Tighten

        • Tighten the drivetrain reinforcement brace nut to 50 N·m (37 lb ft).
        • Tighten the drivetrain reinforcement brace bolts to 25 N·m (18 lb ft).
  15. Install the radiator to front frame brackets.
  16. Connect both the lower ball joints to the steering knuckle. Refer to Lower Control Arm Ball Joint Replacement.
  17. Install the nuts that secure the engine mount to the frame. Refer to Engine Mount Replacement - Right Side for the 3.8L engine or Engine Mount Replacement - Left Sideand Engine Mount Replacement - Right Side for the 5.3L engine.
  18. Install the nuts which secure the transaxle mount to the frame. Refer to Transmission Mount Replacement - Left Side for the automatic transaxle.
  19. Install the steering gear mounting bolts. Refer to Steering Gear Replacement.
  20. Install the stabilizer shaft links. Refer to Stabilizer Shaft Link Replacement.

  21. Object Number: 1209233  Size: SH
  22. If applicable, connect the wheel speed sensor wiring harness to the frame and lower control arm.
  23. If applicable, connect the front wheel speed sensor connectors (1).
  24. If applicable, install the front wheel speed harness retainers (2) to the frame and to the lower control arm.
  25. Install the positive battery cable and retainers to the frame. Refer to Battery Positive Cable Replacement.
  26. Install the power steering cooler pipe. Refer to Power Steering Cooler Pipe/Hose Replacement.
  27. Connect the fog lamp harness connectors.
  28. Install the front tires and wheels. Refer to Tire and Wheel Removal and Installation.
  29. Install the radiator air lower baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement.
  30. Lower the vehicle.
  31. Remove the engine support fixture.
  32. Inspect the front wheel alignment. Refer to Wheel Alignment Measurement.