GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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.


    Object Number: 50513  Size: SH
  1. Remove the generator. Refer to Generator Replacement in Engine Electrical.
  2. Remove the ignition control module. Refer to Ignition Coil Module Replacement in Engine Electrical.
  3. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
  5. Remove the right side engine mount through bolt nut (2).

  6. Object Number: 50520  Size: SH
  7. Remove the left side engine mount through bolt nut (1).
  8. Install the engine support fixture to the engine. Refer to Engine Support Fixture .
  9. Raise the engine slightly in order to relieve tension on the through bolts.

  10. Object Number: 46662  Size: SH
  11. Remove the transmission oil cooler pipe bracket bolt and bracket.

  12. Object Number: 282953  Size: SH
  13. Remove the air conditioning compressor bolts.

  14. Object Number: 365440  Size: SH
  15. Remove the air conditioning compressor rear bolts (2, 3).
  16. Position the A/C compressor forward of the bracket in order to remove the engine mount through bolt without recovering the refrigerant.

  17. Object Number: 50513  Size: SH
  18. Remove the right engine mount through bolt (1).

  19. Object Number: 50520  Size: SH
  20. Remove the left engine mount through bolt (2).
  21. Raise the engine enough to remove the engine mounts and engine mount brackets.

  22. Object Number: 49837  Size: SH
  23. Remove the right engine mount bolts (1) and the right engine mount (2).

  24. Object Number: 50525  Size: SH
  25. Remove the left engine mount bolts (1) and the left engine mount (2).

  26. Object Number: 50517  Size: SH
  27. Remove the right engine mount bracket bolts (1, 2) and the right engine mount bracket (3).

  28. Object Number: 211604  Size: SH
  29. Remove the positive cable from the engine mount stud.
  30. • Remove the battery positive cable nut (2).
    • Remove the harness clamp from the stud.
    • Remove the RF (Radio Frequency) ground strap.

    Object Number: 50546  Size: SH
  31. Remove the left engine mount bracket bolts (3).
  32. Remove the left engine mount bracket stud (2) and the engine mount bracket (1).
  33. Visually Inspect the rubber portions of the engine mount for damage.

Installation Procedure


    Object Number: 50546  Size: SH
  1. Install the left engine mount bracket (1) and stud (2) to the engine block.
  2. Install the left engine mount bracket bolts (3).
  3. Tighten

        • Tighten the engine mount bracket bolts (3) to 100 N·m (74 lb ft).
        • Tighten the engine mount bracket stud (2) to 87 N·m (64 lb ft).

    Object Number: 211604  Size: SH
  4. Install the positive cable to the engine mount bracket stud.
  5. • Install the RF (Radio Frequency) ground strap.
    • Install the harness clamp to the stud.
    • Install the battery positive cable nut (2).

    Tighten
    Tighten the battery positive cable nut (2) to 25 N·m (18 lb ft).


    Object Number: 50517  Size: SH
  6. Install the right engine mount bracket (3) and bolts (1, 2) to the engine block.
  7. Tighten

        • Tighten the two engine mount bracket bolts (10 to 100 N·m (74 lb ft).
        • Tighten the engine mount bracket bolt (2) to 50 N·m (37 lb ft).

    Object Number: 50525  Size: SH
  8. Install the left engine mount (2) and bolts (1) to the crossmember.
  9. Tighten
    Tighten the left engine mount bolts (1) to 58 N·m (43 lb ft).


    Object Number: 49837  Size: SH
  10. Install the right engine mount (2) and bolts (1) to the crossmember.
  11. Tighten
    Tighten the right engine mount bolts (2) to 58 N·m (43 lb ft).

  12. Lower the engine until the mount bracket and mount through holes line up together.
  13. Remove the engine support fixture.

  14. Object Number: 50520  Size: SH
  15. Install the left engine mount through bolt (2).

  16. Object Number: 50513  Size: SH
  17. Install the right engine mount through bolt (1).

  18. Object Number: 365440  Size: SH
  19. Position the A/C compressor rearward to the bracket.
  20. Install the air conditioning compressor rear bolts (2, 3).
  21. Tighten
    Tighten the air conditioning compressor rear bolts (2, 3) to 30 N·m (22 lb ft).


    Object Number: 282953  Size: SH
  22. Install the air conditioning compressor bolts.
  23. Tighten
    Tighten the air conditioning compressor bolts to 50 N·m (37 lb ft).


    Object Number: 46662  Size: SH
  24. Install the transmission oil cooler pipe bracket and bolt.
  25. Tighten
    Tighten the oil cooler pipe bracket to 17 N·m (13 lb ft).


    Object Number: 50520  Size: SH
  26. Install the left side engine mount through bolt nut (1).
  27. Tighten
    Tighten the engine mount through bolt nut (1) to 80 N·m (59 lb ft).


    Object Number: 50513  Size: SH
  28. Install the right side engine mount through bolt nut (2).
  29. Tighten
    Tighten the engine mount through bolt nut (2) to 80 N·m (59 lb ft).

  30. Install the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
  31. Lower the vehicle.
  32. Install the ignition control module. Refer to Ignition Coil Module Replacement in Engine Electrical.
  33. Install the generator. Refer to Generator Replacement in Engine Electrical.