GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 General Information 🢒 Vibration Diagnosis and Correction 🢒 Transmission Mount Replacement - Left Side

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 right front fascia extension. Refer to Front Bumper Fascia Extension Replacement in Bumpers.

    4. Object Number: 767120 Size: SH
  4. Install a transaxle stand under the transaxle in order to support the powertrain.

    5. Object Number: 768358 Size: SH
  5. Remove the mount stud nut from the mount stud to allow separation of the mount from the mount bracket.

    6. Object Number: 154972 Size: SH
  6. Remove the nut (4) and bolt (1) and the nuts (3) from the vehicle.
  7. Slowly lower the transaxle stand and remove the stand.
  8. Lower the vehicle.

    9. Object Number: 768296 Size: SH
  9. Remove the frame rail bolt retaining screws.
  10. Raise the vehicle.

    11. Object Number: 154972 Size: SH
  11. Push up on the frame rail bolts in order to clear the mount as the top of the mount is tilted away from the vehicle.
  12. Remove the mount (2) from the vehicle.

Installation Procedure

    Object Number: 154972 Size: SH
  1. Insert the mount stud into the transaxle mount bracket.
  2. Push up on the frame rail bolts in order to clear the mount (2) as the mount is rotated into the proper position.
  3. Make sure the loose frame rail bolts are properly aligned with and inserted into the mount.
  4. Lower the vehicle.

    5. Object Number: 768296 Size: SH

    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 frame rail bolt retaining screws.

    6. Tighten
    Tighten the frame rail bolt retaining screws to 4 N·m (35 lb in).

  6. Raise the vehicle.

    7. Object Number: 154972 Size: SH
  7. Install the mount bolt (1) and rotate counter clockwise to ensure anti-rotation tab locks behind mount bracket.
  8. Install the mount nuts (4) and (3).

    9. Tighten
    Tighten the mount nuts (4) and (3) to 70 N·m (52 lb ft).


    Object Number: 767120 Size: SH
  9. Using the transaxle stand, raise the powertrain and load the mount.

    10. Object Number: 768358 Size: SH
  10. Install the mount stud nut onto the mount stud.

    11. Tighten
    Tighten the mount stud nut to 80 N·m (59 lb ft).

  11. Remove the transaxle stand.
  12. Install the right front fascia extension. Refer to Front Bumper Fascia Extension Replacement in Bumpers.
  13. Install the left front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  14. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.