GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.
  2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .

  3. Object Number: 628885  Size: SH
  4. Remove the discharge hose to condenser nut.
  5. Disconnect the discharge hose from the condenser.
  6. Important: Cap or tape the open A/C hoses and A/C refrigerant component immediately to prevent A/C system contamination.

  7. Cap or tape the discharge port on the condenser.

  8. Object Number: 791658  Size: SH
  9. Remove the discharge hose to compressor nut.
  10. Disconnect the discharge hose from the compressor.
  11. Cap or tape the compressor discharge port.
  12. Remove the discharge hose.
  13. Discard the sealing washers.

Installation Procedure

  1. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant hose and the A/C refrigerant component.
  2. Important: Flat washer type seals do not require lubrication.

  3. Carefully slide the new sealing washer onto the compressor side of the discharge hose until seated.
  4. Install the discharge hose.
  5. Remove the cap or tape from the compressor discharge port.

  6. Object Number: 628885  Size: SH
  7. Connect the discharge hose to the compressor.
  8. 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.

  9. Install the discharge hose to compressor nut.
  10. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  11. Install a new seal washer to the condenser side of the discharge hose.
  12. Remove cap or tape from the discharge port on the condenser.

  13. Object Number: 791658  Size: SH
  14. Connect the discharge hose to the condenser.
  15. Install the discharge hose to condenser nut.
  16. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  18. Leak test the fittings of the component using J 39400-A .
  19. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.