GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39500-B Air Conditioning Refrigerant Recovery, Recycling and Recharging (ACR4) System


    Object Number: 247278  Size: SH
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the right front fascia extension. Refer to Wheelhouse Filler Replacement in Body Front End.
  5. Remove the push pins (1) from the lower air deflector (2).
  6. Remove the lower air deflector (2).

  7. Object Number: 378357  Size: SH
  8. Remove the wiring harness bracket bolt.
  9. Disconnect the electrical connector from the compressor.
  10. Disconnect the electrical connector from the A/C pressure sensor.

  11. Object Number: 247288  Size: SH
  12. Remove the A/C compressor hose from the compressor.

  13. Object Number: 247295  Size: SH
  14. Remove the front compressor mounting nuts.
  15. Remove the bolt from the rear of the compressor.
  16. Remove the compressor.

Installation Procedure

Important: A new compressor may be shipped with the entire A/C system charge of 9 fluid ounces. When servicing or replacing the compressor, drain and measure the oil from the old compressor. If less than 1 fluid ounce is drained, add 2 ounces to the replacement compressor. If 1 ounce or more is drained, fill the compressor with that amount. A replacement compressor that is shipped with refrigerant oil in it must have the oil drained and refilled with new.

Tools Required

J 39400 Electronic Halogen Leak Detector


    Object Number: 247295  Size: SH
  1. Install the compressor.
  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 mounting nuts and the bolt.
  4. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).

  5. Install the rear bolt to the compressor.
  6. Tighten
    Tighten the bolt to 50 N·m (37 lb ft).


    Object Number: 247288  Size: SH
  7. Install the A/C compressor hose to the compressor.
  8. Tighten
    Tighten the nut to 30 N·m (22 lb ft).

  9. Install the wiring harness bracket and bolt.
  10. Tighten
    Tighten the bolt to 12 N·m (106 lb in).


    Object Number: 378357  Size: SH
  11. Connect the electrical connections to the compressor.
  12. Connect the electrical connection to the A/C pressure sensor.
  13. Lower the vehicle.
  14. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  15. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  16. Test the A/C system for leaks using the J 39400 . Refer to Leak Testing .

  17. Object Number: 247278  Size: SH
  18. Install the lower air deflector (2).
  19. Install the push pins (1) for the lower air deflector (2).
  20. Install the right front fascia extension. Refer to Wheelhouse Filler Replacement in Body Front End.