GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1865823  Size: SH
  1. Disconnect the negative battery cable.
  2. Discharge and recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  3. Remove the discharge hose mounting nut.
  4. Lift the discharge hose mounting block and the suction hose from the compressor.

  5. Object Number: 1866072  Size: SH
  6. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
  7. Disconnect the electrical connector at the compressor.
  8. Remove the drive belt and the idler pulley. Refer to Drive Belt Replacement for the 2.0L or 2.5L gasoline engine or Drive Belt Replacement for the 2.0L diesel engine.
  9. Remove the front and the rear compressor-to-bracket bolts.
  10. Remove the compressor.
  11. Drain the oil from the compressor into a container. Measure the amount of the oil that is drained. Discard the used oil.

Installation Procedure


    Object Number: 1866072  Size: SH
  1. Add oil to the new compressor. Use the exact amount of oil that you drained from the old compressor.
  2. Install the compressor.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the compressor-to-bracket mounting bolts. Tighten the front bolts to 27 N·m (20 lb ft) and the rear bolts to 20 N·m (15 lb ft).
  5. Install the idler pulley and the serpentine accessory drive belt. Refer to Drive Belt Replacement for the 2.0L or 2.5L gasoline engine or Drive Belt Replacement for the 2.0L diesel engine.

  6. Object Number: 1866074  Size: SH
  7. Install new sealing washers to the suction hose and the discharge hose mounting.
  8. Connect the electrical connector at the compressor.
  9. Lower the vehicle.
  10. Place the suction hose into its cavity in the compressor and install the discharge hose mounting block to clamp it into place. Hold this all together while tightening the retaining nut and tighten to 33 N·m (24 lb ft).
  11. Connect the negative battery cable.
  12. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.