GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43600 ACR 2000 Air Conditioning Service Center
    • J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Remove the accessory drive belt from the compressor. Refer to Drive Belt Replacement in Engine Mechanical.
  4. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  5. Remove the right front tire. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  6. Remove the right wheelhouse extension. Refer to Front Bumper Fascia Extension Replacement in Body Front End.
  7. Remove the brake line retaining clip from the frame to allow movement of the brake lines during removal of the compressor.
  8. Remove the suction hose nut from the compressor.

  9. Object Number: 130645  Size: SH

    Important: Seal the compressor suction and discharge ports after the hoses are removed in order to keep contaminants from entering the compressor, and to keep oil from draining out of the compressor during removal.

  10. Remove the suction hose from the compressor.

  11. Object Number: 130643  Size: SH
  12. Remove the discharge hose nut from the compressor.
  13. Remove the discharge hose from the compressor.
  14. Remove and discard the sealing washers from the discharge hose and the suction hose. Refer to Sealing Washer Replacement .

  15. Object Number: 284223  Size: SH
  16. Disconnect the compressor electrical connector.
  17. Remove the lower alternator bolt.

  18. Object Number: 527502  Size: SH
  19. Remove the compressor mounting fasteners (1, 2, 3, 4).

  20. Object Number: 493706  Size: SH
  21. Remove the compressor (2) mounting stud (1).

  22. Object Number: 493704  Size: SH
  23. Rotate the compressor, to allow the compressor to exit through the wheelhouse opening.
  24. Remove the A/C compressor from the vehicle.
  25. Balance the compressor oil. Refer to Compressor Oil Balancing .

Installation Procedure


    Object Number: 493704  Size: SH
  1. Install the compressor through the wheelhouse opening.
  2. Rotate the compressor to fit the compressor through the wheelhouse opening.

  3. Object Number: 493706  Size: SH
  4. Install compressor (2) mounting stud (1).
  5. Install the lower alternator bolt.

  6. Object Number: 527502  Size: SH

    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.

  7. Install the compressor mounting fasteners (1, 2, 3, 4) and hand tighten the fasteners.
  8. Tighten the fasteners in the following sequence:

    Tighten

    1. Tighten the compressor mounting nut (1) to 50 N·m (37 lb ft).
    2. Tighten the compressor mounting bolts (2, 3) to 50 N·m (37 lb ft).
    3. Tighten the compressor mounting bolt (4) to 25 N·m (18 lb ft).

    Object Number: 284223  Size: SH
  9. Connect the compressor electrical connector.
  10. Install the new sealing washers to the discharge hose and the suction hose. Refer to Sealing Washer Replacement .
  11. Install the discharge hose to the compressor.

  12. Object Number: 130643  Size: SH
  13. Connect the discharge hose nut to the compressor.
  14. Tighten
    Tighten the nut to 20 N·m (15 lb ft).


    Object Number: 130645  Size: SH
  15. Install the suction hose to the compressor.
  16. Install the suction hose nut to the compressor.
  17. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  18. Install the brake lines and the retaining clips to the frame.
  19. Install the accessory drive belt to the compressor. Refer to Drive Belt Replacement in Engine Mechanical.
  20. Install the fascia extension. Refer to Front Bumper Fascia Extension Replacement in Body Front End.
  21. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  22. Install the right front tire. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  23. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  24. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  25. Leak test the fittings using the J 39400-A .