GM Service Manual Online
For 1990-2009 cars only

Engine Mount Replacement Front

Removal Procedure

  1. Inspect the engine mounts. Refer to Engine Mount Inspection .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  3. Object Number: 66191  Size: SH
  4. Remove the front engine mount through bolt and the nut for the side being replaced.

  5. Object Number: 374320  Size: SH

    Notice: When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.

  6. Using a jack on the square tab (left side shown) at the rear of the engine block, raise the engine. In order to access the square tab on the right side remove the starter. Refer to Starter Motor Replacement (Diesel) In Engine Electrical.
  7. Raise the front of the engine only enough to permit removal of the engine mount. Refer to

  8. Object Number: 68945  Size: SH
  9. Remove the bolts for the front engine mount bracket.
  10. Remove the front engine mount bracket.
  11. Remove the front engine mount to mount bracket nuts and bolts.
  12. Remove the front engine mount assembly.

Installation Procedure


    Object Number: 68945  Size: SH
  1. Install the front engine mount assembly to the mount bracket.
  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 nuts and bolts.
  4. Tighten
    Tighten the to 41 N·m (30 lb ft).


    Object Number: 66191  Size: SH
  5. Install the front engine mount bracket with bolts to the engine block.
  6. Tighten
    Tighten the bolts to 47 N·m (35 lb ft).

  7. Lower the engine until the front engine mount through bolt can be inserted.
  8. Install the front engine mount through bolt and nut.
  9. Tighten
    Tighten the nut to 56 N·m (41 lb ft).

  10. Remove the engine support.
  11. Lower the vehicle.