GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Bonneville 🢒 General Information 🢒 General Information 🢒 Transmission Rear Mount Replacement

Removal Procedure

    Object Number: 521323 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the engine assembly with a suitable jack.
  3. Remove the nuts (1) securing the transmission mount (2) to the transmission mount bracket (3).

    4. Object Number: 521324 Size: SH
  4. Raise the jack allowing the engine assembly to lift from the engine frame slightly.
  5. Remove the bolts (3) securing the mount to the frame.
  6. Remove the 1 nut (2) securing the mount to the frame.
  7. Remove the mount (1).

Installation Procedure

    Object Number: 521324 Size: SH
  1. Install the mount (1).

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the mount attaching bolts (3) and nut (2) securing the mount to the frame.

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

  3. Lower the transmission in position.

    4. Object Number: 521323 Size: SH
  4. Install the nuts (1) to the mount (2) and mount bracket (3).

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

  5. Remove the engine assembly support jack.
  6. Lower the vehicle.