GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

    • J 39200 Digital Multimeter
    • J 41384 Clutch Plate Holder/Remover

    Important: 

       • When servicing the compressor, keep dirt and other foreign material from getting on the compressor parts and into the system. Clean tools and a clean work area are essential for proper service. Keep the compressor and the parts clean at all times. Any parts which are to be reassembled should be cleaned with Trichloroethane, naphtha, kerosene, or an equivalent solvent. Air dry the parts and wipe clean with a lint-free cloth.
       • All repairs and procedures for the compressor must be performed after the A/C system refrigerant has been discharged and recovered, and after the compressor has been removed from the vehicle.
       • When the compressor is removed from the vehicle for servicing, drain and discard the oil remaining in the compressor. Add 90 cc (3.0 fl oz) of new refrigerant oil when the repairs are complete.

  1. Remove the compressor from the vehicle. Refer to Air Conditioning Compressor Replacement .

  2. Object Number: 345606  Size: SH
  3. Remove the pressure plate nut and the washer from the drive shaft using the J 41384 .
  4. Remove the pressure plate from the drive shaft using the J 41384 .

  5. Object Number: 345609  Size: SH
  6. Remove the clutch pulley snap ring (1) and the shim. Use the appropriate snap ring pliers.
  7. Important: Do not damage the clutch pulley during removal.

  8. Remove the clutch pulley from the compressor by tapping with a plastic hammer.

  9. Object Number: 345610  Size: SH
  10. Remove 1 screw (2) and the clutch coil wire retainer.
  11. Remove the clutch coil snap ring using the snap ring pliers.
  12. Remove the clutch coil from the compressor.
  13. Inspect the pressure plate for excessive wear and scoring. Replace the pressure plate if needed.
  14. Inspect the clutch pulley for excessive wear and scoring. Replace the clutch pulley if needed.

  15. Object Number: 345611  Size: SH
  16. Measure the clutch coil (1) resistance using the J 39200 . Replace the clutch coil if the resistance is not within the specifications.
  17. Clutch Coil Resistance
    2.9-3.8 ohms at 20°C (68°F).

Installation Procedure

Tools Required

J 41384 Clutch Plate Holder/Remover


    Object Number: 345609  Size: SH
  1. Install the clutch coil to the compressor. Secure the clutch coil with the snap ring (1) using the snap ring pliers.

  2. Object Number: 345610  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.

  3. Install the clutch coil wire retainer to the compressor. Secure the retainer with the 1 screw (2).
  4. Tighten
    Tighten the clutch coil wire retainer screw to 2-2.5 N·m (17.1-22.12 lb ft).

  5. Install the clutch pulley to the compressor. Secure the clutch pulley with the snap ring and the shim.

  6. Object Number: 345612  Size: SH
  7. Install the pressure plate (1) to the compressor drive shaft.
  8. Adjust the clearance (2) between the clutch pulley (3) and the pressure plate.
  9. Pressure Plate-to-Pulley Clearance
    0.35-0.65 mm (0.014-0.025 in).

  10. Replace the shim in order to obtain the proper clearance if the clearance is not within the specifications.

  11. Object Number: 345606  Size: SH
  12. Install the pressure plate washer and the nut to the compressor drive shaft using the J 41384 .
  13. Tighten
    Tighten the pressure plate nut to 15-20 N·m (10.8-15.2 lb ft).

  14. Install the compressor to the vehicle. Refer to Air Conditioning Compressor Replacement .