GM Service Manual Online
For 1990-2009 cars only

Engine Mount Replacement Front

Removal Procedure

Notice: Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the remaining mounts are subjected to abnormally high stresses.


    Object Number: 374352  Size: SH
  1. Remove the upper fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the engine mounting through-bolt and nut (left side shown).

  4. 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 crankshaft balancer. Jacking against the oil pan may cause it to crack or break.

  5. 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 in Engine Electrical.
  6. Raise the engine only enough to permit removal of the engine mount.
  7. Check for interference between the rear of the engine and the dash panel.

  8. Object Number: 374375  Size: SH
  9. Remove the engine mount to engine mount frame bracket bolts (right side shown).
  10. Remove the engine mount.

  11. Object Number: 374403  Size: SH
  12. In order to remove the engine mount engine bracket (right side shown) use the following procedure:
  13. 9.1. Remove the engine mount engine bracket bolts.
    9.2. Remove the bracket.
    9.3. Remove the heat shield, if necessary.

Installation Procedure


    Object Number: 374403  Size: SH
  1. In order to install the engine mount engine bracket (right side shown) use the following procedure:
  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.

    1.1. Install the heat shield and bolts.

    Tighten
    Tighten the heat shield bolts to 6 N·m (53 lb in).

    1.2. Install the engine mount engine bracket and bolts.

    Tighten
    Tighten the engine mount engine bracket bolts to 51 N·m (38 lb ft).


    Object Number: 374375  Size: SH
  3. Install the engine mount.
  4. Install the engine mount to engine mount frame bracket bolts.
  5. Tighten
    Tighten the engine mount frame bracket bolts to 58 N·m (43 lb ft).


    Object Number: 374352  Size: SH
  6. Lower the engine until the engine mounting through-bolt can be inserted.
  7. Install the engine mount through-bolt and the nut (left side shown).
  8. Tighten
    Tighten the engine mount through-bolt nut to 68 N·m (50 lb ft).

  9. Install the starter, if removed. Refer to Starter Motor Replacement in Engine Electrical.
  10. Lower the vehicle.
  11. Install the upper fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.

Engine Mount Replacement Frame Bracket

Removal Procedure


    Object Number: 374269  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 crankshaft balancer. Jacking against the oil pan may cause it to crack or break.

  1. Remove the engine mount. Refer to Engine Mount Replacement .

  2. Object Number: 374376  Size: SH
  3. Remove the bolts holding the engine mount frame bracket to the frame (right side shown).
  4. Remove the engine mount frame bracket.

Installation Procedure


    Object Number: 374376  Size: SH
  1. Install the engine mount frame 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 engine mount frame bracket bolts.
  4. Tighten
    Tighten the engine mount frame bracket bolts to 45 N·m (33 lb ft).


    Object Number: 374269  Size: SH
  5. Install the engine mount. Refer to Engine Mount Replacement .