GM Service Manual Online
For 1990-2009 cars only

Transmission Mount Replacement - Side W/L61

Removal Procedure

  1. Remove the battery and tray. Refer to Battery Tray Replacement in Engine Electrical.

  2. Object Number: 789908  Size: SH
  3. Using a floor jack and a block of wood, support the powertrain.

  4. Object Number: 1235782  Size: SH
  5. Remove the left transmission mount to bracket bolts

  6. Object Number: 1235786  Size: SH
  7. Remove the left transmission mount to body bolts.
  8. Remove the transmission mount from the vehicle.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1235786  Size: SH
  1. Install the left transmission mount to the vehicle.
  2. Tighten
    Tighten the left transmission mount to body bolts to 25 N·m (16 lb ft).


    Object Number: 1235782  Size: SH
  3. Install the left transmission mount to body bolts.
  4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  5. Remove the floor jack supporting the engine.

  6. Object Number: 886646  Size: SH
  7. Install the battery and tray. Refer to Battery Tray Replacement in Engine Electrical.

Transmission Mount Replacement - Side W/LX9

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the left front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and wheels.
  3. Remove the left splash shield. Refer to Radiator Air Lower Baffle and Deflector Replacement in Engine Cooling.
  4. Using a suitable floor jack and block of wood, support the powertrain.

  5. Object Number: 1229798  Size: SH
  6. Remove the transaxle mount lower nuts from the frame.

  7. Object Number: 1229801  Size: SH
  8. Remove the transmission mount upper nuts from the transmission mount bracket.
  9. Use the floor jack to raise the powertrain enough to remove the transmission mount.
  10. Remove the transaxle mount from the frame.

Installation Procedure

  1. Install the transaxle mount to the frame.

  2. Object Number: 1229798  Size: SH
  3. Install the transmission mount to frame bolts. Hand tighten only.
  4. Use the jackstand to lower the transmission mount bracket on to the transmission mount studs.

  5. Object Number: 1229801  Size: SH
  6. Install the transmission mount to bracket upper nut. Hand tighten only.
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Tighten the transmission mount nut and bolts.
  9. Tighten

        • Tighten the transmission mount upper nuts to 50 N·m (37 lb ft).
        • Tighten the transmission mount lower bolts to 50 N·m (37 lb ft).
  10. Install the left splash shield. Refer to Radiator Air Lower Baffle and Deflector Replacement in Engine Cooling.
  11. Install the left front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.