GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Park Avenue 🢒 General Information 🢒 General Information 🢒 Transmission Rear Mount Bracket Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the power steering gear heat shield. Refer to Steering Gear Heat Shield Replacement in Power Steering System.
  3. Remove the power steering pressure hose from the rack and pinion and hang from the exhaust pipe. Refer to Power Steering Pressure Pipe/Hose Replacement in Power Steering.
  4. Remove the power steering return hose from the rack and pinion and hang from the exhaust pipe. Refer to Power Steering Return Hose Replacement in Power Steering.

    5. Object Number: 767120 Size: SH
  5. Support the transaxle with a transaxle support stand.

    6. Object Number: 154973 Size: SH
  6. Remove nuts (1) from the mount bracket.
  7. Remove the lower bolts and nut from the mount.

    8. Object Number: 667200 Size: SH
  8. Remove the three retaining bolts from the mount bracket (1).
  9. Remove the mount and the mount bracket from the vehicle.

Installation Procedure
  1. Install the mount and the mount bracket onto the vehicle and position in place.
  2. Apply thread lock compound GM P/N 12345493 or equivalent, to the rear transmission bracket bolts.

    3. Object Number: 667200 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.

  3. Install the retaining bolts to the mount bracket (1).

    4. Tighten
    Tighten the retaining bolts to 63 N·m (46 lb ft).


    Object Number: 154973 Size: SH
  4. Install the transmission mount lower bolts and nut onto the mount.

    5. Tighten
    Tighten the mount bolts and nut to 50 N·m (37 lb ft).

  5. Install the transmission mount upper nuts (1) onto the mount.

    6. Tighten
    Tighten the mount nuts to 50 N·m (37 lb ft).

  6. Remove the transaxle support stand.
  7. Install the power steering return hose onto the rack and pinion. Refer to Power Steering Return Hose Replacement in Power Steering.
  8. Install the power steering pressure hose onto the rack and pinion. Refer to Power Steering Pressure Pipe/Hose Replacement in Power Steering.
  9. Install the power steering gear heat shield. Refer to Steering Gear Heat Shield Replacement in Power Steering System.
  10. Lower the vehicle.