GM Service Manual Online
For 1990-2009 cars only

Engine Mount Replacement Left

Removal Procedure

Important: When performing this service procedure, do not lift the engine block by the crankshaft balancer. Damage to the crankshaft balancer, crankshaft pulleys, or the crankshaft could occur.

Do not replace the left or right at the same time. They must be replaced in two separate service procedures, so as not to cause an alignment problem when re installing the engine mounts.


    Object Number: 290320  Size: SH
  1. Disconnect the battery cables from the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Move the front wheel to the left against the steering stops.
  4. Install the pole jack on the engine locating tab just to the left rear of the power steering pump.

  5. Object Number: 344795  Size: SH
  6. Remove the engine oil cooler lines from the retainer.
  7. Remove the engine oil cooler line retainer from the engine mount bracket.

  8. Object Number: 561724  Size: SH
  9. Remove the engine mount through bolt.
  10. Raise the engine only enough to permit removal of the engine mount bolts.

  11. Object Number: 560499  Size: SH
  12. Remove the engine mount bracket assembly from the engine block.

  13. Object Number: 565898  Size: SH
  14. Remove the engine mount assembly bolts, nuts, and washers.
  15. Remove the engine mount from the frame.

Installation Procedure


    Object Number: 560499  Size: SH
  1. Install the engine mount bracket to the engine block.
  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 assembly bolts, nuts, and washers to the crossmember.
  4. Tighten
    Tighten the bolts to 54 N·m (40 lb ft).


    Object Number: 565898  Size: SH
  5. Install the engine mount assembly bolts, nuts, and washers to the crossmember.
  6. Tighten

        • Tighten the bolts to 59 N·m (44 lb ft).
        • Tighten the nuts to 45 N·m (33 lb ft).

    Object Number: 561724  Size: SH
  7. Lower the engine until the engine mount through bolt can be inserted.
  8. Install the engine mount through bolt and the nut.
  9. Tighten
    Tighten the through bolt nut to 68 N·m (50 lb ft).


    Object Number: 344795  Size: SH
  10. Install the engine oil cooler line retaining bracket to the engine mount bracket.
  11. Install the engine oil cooler lines to the retaining bracket.

  12. Object Number: 290320  Size: SH
  13. Remove the pole jack from the vehicle.
  14. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  15. Connect both the battery negative cables to the batteries. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Engine Mount Replacement Right

Removal Procedure


    Object Number: 561728  Size: SH
  1. Disconnect both the battery negative cable from the batteries. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the starter from the engine block (right side only) and secure out of the way. Refer to Starter Motor Replacement in Engine Electrical.
  4. Install a pole jack on the right rear corner of the engine block just above starter.
  5. Remove the engine mount through bolt and the nut.
  6. Raise the engine only enough to permit removal of the engine mount.

  7. Object Number: 560501  Size: SH
  8. Remove the engine mount bracket from the engine block.

  9. Object Number: 565900  Size: SH
  10. Remove the engine mount assembly from the frame.

Installation Procedure


    Object Number: 560501  Size: SH
  1. Install the engine mount assembly to the engine block.
  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 assembly bolts to the engine block.
  4. Tighten
    Tighten the bolts to 54 N·m (40 lb ft).


    Object Number: 565900  Size: SH
  5. Install the engine mount assembly bolts to the frame.
  6. Tighten
    Tighten the bolts to 59 N·m (44 lb ft).

  7. Lower the engine until the engine mount through bolt can be inserted.

  8. Object Number: 561728  Size: SH
  9. Install the engine mount through bolt and the nut.
  10. Tighten
    Tighten the through bolt nut to 68 N·m (50 lb ft).

  11. Remove the pole jack from the engine block.
  12. Install the starter to the engine block (right side only). Refer to Starter Motor Replacement in Engine Electrical.
  13. Remove the safety stands and lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Connect both the battery negative cables to the batteries. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.