GM Service Manual Online
For 1990-2009 cars only

Transmission Mount Bracket Replacement - Left Side LA1

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.

  4. Object Number: 160961  Size: MH
  5. Remove the transaxle brace bolts.
  6. Remove the transaxle brace.

Installation Procedure


    Object Number: 160961  Size: MH
  1. Position the transaxle brace to transaxle and engine.
  2. Hand start the bolts to the engine.
  3. Hand start the bolts to the transaxle.
  4. 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.

  5. Install the brace bolts to the engine.
  6. Tighten
    Tighten the brace bolts to 43 N·m (32 lb ft).

  7. Install the brace bolts to the transaxle.
  8. Tighten
    Tighten the brace bolts to 43 N·m (32 lb ft).

  9. Install the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
  10. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  11. Lower the vehicle.

Transmission Mount Bracket Replacement - Left Side LY7

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
  4. Remove the transfer case brace. Refer to Support Brace Replacement in Transfer Case - Steyr.

  5. Object Number: 1395450  Size: SH
  6. Remove the transmission lower brace bolts.
  7. Remove the transmission lower brace.
  8. If you are servicing the transmission upper brace, perform the following steps.

  9. Object Number: 1395483  Size: SH
  10. Remove the transmission upper brace nut located behind the power steering pump.
  11. Disconnect the intermediate steering shaft from the steering gear. Refer to Intermediate Steering Shaft Replacement in Steering Wheel and Column.
  12. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  13. Object Number: 1388664  Size: SH
  14. Use a utility stand in order to support the center of the rear frame.
  15. Remove only the two frame rear bolts.
  16. Raise the vehicle or lower the powertrain in order to access the transmission upper brace.

  17. Object Number: 1395453  Size: SH
  18. Remove the transmission upper brace bolts.
  19. Remove the transmission upper brace.

Installation Procedure


    Object Number: 1395453  Size: SH
  1. Install the transmission upper brace.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the transmission upper brace bolts.
  4. Tighten
    Tighten the transmission upper brace outboard bolts (2) to 23 N·m (17 lb ft).

    Tighten
    Tighten the transmission upper brace inboard bolt (1) to 50 N·m (37 lb ft).

  5. Lower the vehicle or raise the powertrain until the frame insulators contact the chassis.
  6. Install the two frame rear bolts. Refer to Front Frame Replacement in Frame and Underbody.
  7. Connect the intermediate steering shaft to the steering gear. Refer to Intermediate Steering Shaft Replacement in Steering Wheel and Column.

  8. Object Number: 1395483  Size: SH
  9. Install the transmission upper brace nut located behind the power steering pump.
  10. Tighten
    Tighten the transmission upper brace nut to 50 N·m (37 lb ft).


    Object Number: 1395450  Size: SH
  11. Install the transmission lower brace.
  12. Install the transmission lower brace bolts.
  13. Tighten
    Tighten the transmission lower brace bolts to 50 N·m (37 lb ft).

  14. Install the transfer case brace. Refer to Support Brace Replacement in Transfer Case - Steyr.
  15. Install the right engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
  16. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  17. Lower the vehicle.