GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    • J 28467-A Universal Support Fixture
    • J 41044 Engine Support Adapters

Notice: When raising or supporting the engine for any reason, do not use a jack under the oil pan, crankshaft balancer, or any sheet metal. Due to small clearances between the oil pan and the oil pump screen, jacking against the oil pan may cause it to be bent against the pump screen, resulting in a damaged oil pickup unit. Jacking against the crankshaft balancer may also cause oil seal and/or crankshaft bearing damage. Always use a J 28467-A (Universal Support Fixture) along with J 41044 (Engine Support Adapters) when raising or supporting the engine.

  1. Measure engine movement at the engine mounts in order to check for damage to the rubber portions of the mount. Use the following procedure:
  2. 1.1. Apply the parking brake.
    1.2. Start the engine.
    1.3. Firmly apply primary brakes.
    1.4. With an assistant observing engine movement, slightly load the engine in R (Reverse) and D (Drive). If the engine moves more than 24 mm (0.945 in) from the at rest position, in either direction, check the engine mount attachment.
  3. If the engine mount attachment is within specifications, replace the engine mount.
  4. Remove the generator. Refer to Generator Replacement in Engine Electrical.
  5. Remove the ignition control module. Refer to Ignition Coil and Ignition Coil Module in Engine Electrical.
  6. Raise the vehicle. Support the vehicle suitably.
  7. Remove the exhaust catalytic converter pipe. Refer to Catalytic Converter Pipe Replacement in Engine Exhaust.

  8. Object Number: 50513  Size: SH
  9. Remove the right side engine mount through bolt nuts.

  10. Object Number: 50520  Size: SH
  11. Remove the left side engine mount through bolt nuts.
  12. Remove the transmission oil cooler lines from the engine mount bracket.
  13. Remove the A/C compressor. Refer to SECTION 1B.
  14. Position the A/C compressor forward. Do this in order to remove the engine mount through bolt without recovering the refrigerant.
  15. Install the J 28467-A and the J 41044. Do this in order to remove the through bolt.

  16. Object Number: 50513  Size: SH
  17. Remove the right engine mount through bolts.

  18. Object Number: 50520  Size: SH
  19. Remove the left engine mount through bolts.
  20. Raise the engine.

  21. Object Number: 49837  Size: SH
  22. Remove the right engine mount bolts and the right engine mount.

  23. Object Number: 50525  Size: SH
  24. Remove the left engine mount bolts and the left engine mount.

  25. Object Number: 50517  Size: SH
  26. Remove the right engine mount bracket fasteners and the right engine mount bracket.

  27. Object Number: 50546  Size: SH
  28. Remove the left engine mount bracket fasteners and the left engine mount bracket.
  29. Inspect the rubber portions of the engine mount for damage.

Installation Procedure


    Object Number: 50517  Size: SH
  1. Install the right engine mount bracket.

  2. Object Number: 50546  Size: SH
  3. Install the left engine mount bracket.
  4. Install the engine bracket fasteners.
  5. Tighten

        • Tighten the engine mount bracket bolts to 100 N·m (74 lb ft).
        • Tighten the engine/ transmission brace mount bracket bolts to 50 N·m (37 lb ft).
        • Tighten the engine mount bracket studs to 100 N·m (74 lb ft).

    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.


    Object Number: 49837  Size: SH
  6. Install the right engine mount.

  7. Object Number: 50525  Size: SH
  8. Install the left engine mount.
  9. Install the engine mount bolts.
  10. Tighten
    Tighten the bolts to 58 N·m (43 lb ft).

  11. Lower the engine.

  12. Object Number: 50513  Size: SH
  13. Install the right engine mount through bolt.
  14. Tighten
    Tighten the bolt to 95 N·m (70 lb ft).


    Object Number: 50525  Size: SH
  15. Install the left engine mount through bolt.
  16. Tighten
    Tighten the bolt to 95 N·m (70 lb ft).

  17. Install the engine mount nuts.
  18. Tighten
    Tighten the nuts to 80 N·m (59 lb ft).

  19. Install the A/C compressor. Refer to SECTION 1B.
  20. Install the transmission oil cooler lines to the engine mount bracket.
  21. Install the exhaust catalytic converter pipe. Refer to Catalytic Converter Pipe Replacement in Engine Exhaust.
  22. Lower the vehicle.
  23. Install the generator. Refer to Generator Replacement in Engine Electrical.
  24. Install the ignition control module. Refer to Ignition Coil and Ignition Coil Module in Engine Electrical.