GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: When installing a new compressor, add 60 ml (2.0 fl oz) of refrigerant oil to the refrigeration system, plus the amount drained from the old compressor.

  1. Discharge and recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

  2. Object Number: 244267  Size: SH
  3. Loosen the drive belt tension by turning the tensioner clockwise.
  4. Remove the compressor serpentine drive belt.

  5. Object Number: 244266  Size: SH
  6. Disconnect the compressor clutch electrical connector (4).
  7. Remove the 1 bolt (2) and the compressor and condenser hose assembly (1) from the compressor.
  8. Important: Cap the open fittings to prevent dirt and moisture from entering the refrigeration system.

  9. Remove the compressor upper mounting bolt (5).
  10. Raise and suitably support vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  11. Remove the right side engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
  12. Remove the 2 compressor lower mounting bolts (6) and the compressor from the vehicle.
  13. If the compressor is to be replaced, drain and measure the amount of oil in the compressor.

Installation Procedure


    Object Number: 244266  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 to the vehicle. Secure the compressor with the 2 lower mounting bolts (6).
  2. Tighten
    Tighten the compressor lower mounting bolts to 25 N·m (18 lb ft).

  3. Install the right side engine splash shield. Refer to Engine Splash Shield Replacement in Body Front End.
  4. Lower the vehicle.
  5. Install the compressor upper mounting bolt (5).
  6. Tighten
    Tighten the compressor upper mounting bolt to 25 N·m (18 lb ft).

  7. Install new O-rings lubricated with mineral base 525 viscosity refrigerant oil to the compressor and condenser hose assembly.
  8. Install the compressor and condenser hose assembly (1) to the compressor.
  9. Tighten
    Tighten the compressor and condenser hose assembly bolt (2) to 47 N·m (35 lb ft).

  10. Connect the compressor clutch electrical connector (4).

  11. Object Number: 244267  Size: SH
  12. Install the compressor serpentine drive belt.
  13. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  14. Operate the A/C system and test for refrigerant leaks. Refer to Leak Testing .