GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 784149  Size: SH
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Release the drive belt tensioner.
  3. Remove the drive belt from the A/C compressor.
  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
  5. Remove the right front fender liner. Refer to Front Fender Liner Replacement in Body Front End.
  6. Disconnect the electrical connector from the compressor.

  7. Object Number: 784268  Size: SH
  8. Remove the compressor hose assembly bolt from the compressor.
  9. Remove the compressor hose assembly from the compressor.
  10. Remove and discard the sealing washers.

  11. Object Number: 784288  Size: SH
  12. Remove the compressor mounting bolts.
  13. Remove the compressor.
  14. Important: NEW CVC compressor assemblies are shipped with a full poly-alkylene glycol (PAG) refrigerant oil charge. Use of the incorrect PAG oil can result in compressor failure.

  15. If replacing the compressor. Refer to Compressor Oil Balancing .

Installation Procedure


    Object Number: 784288  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.

  1. Install the compressor and the mounting bolts to the engine.
  2. Tighten
    Tighten the compressor mounting bolts to 50 N·m (37 lb ft).


    Object Number: 784268  Size: SH
  3. Install new sealing washers on the compressor ports Refer to Sealing Washer Replacement .
  4. Install the A/C compressor hose assembly to the compressor.
  5. Install the A/C compressor hose assembly bolt.
  6. Tighten
    Tighten the bolt to 11 N·m (8 lb ft).


    Object Number: 784149  Size: SH
  7. Connect the compressor electrical connector.
  8. Lower the vehicle.
  9. Install the drive belt on the A/C compressor
  10. Release the drive belt tensioner.
  11. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  12. Leak test the fittings of the repaired or reinstalled component using the J 39400-A .