GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Notice: When supporting the engine to replace a mounting, raise the engine only to the height required to provide clearance for mounting removal. It may be necessary to drain the cooling system and disconnect hoses to avoid damage when the engine is raised. Be careful that control linkage and wiring are not damaged from raising the engine. When replacing a single front mounting, both mountings, should be detached before attempting to raise the engine. Failure to do this will place excessive stress on the attached mounting when the engine is raised.

  1. Support the rear of the transmission to relieve the weight on the rear transmission mount.
  2. Raise and safely support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  3. Object Number: 66075  Size: SH
  4. Remove the mount to crossmember nut and washer.
  5. Raise the rear of the transmission only enough to permit removal of the mount.
  6. Remove the transmission mount bolts and washers.
  7. Remove the rear transmission mount.

Installation Procedure


    Object Number: 66075  Size: SH
  1. Install the rear transmission mount.
  2. 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 transmission mount bolts and washers.
  4. Tighten
    Tighten the bolts to 47 N·m (35 lb ft).

  5. Lower the rear of the transmission.
  6. Install the transmission mount to crossmember nut and washer.
  7. Tighten
    Tighten the nut to 47 N·m (35 lb ft).

  8. Lower the vehicle.