GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the suction hose retaining nut from the accumulator.

  3. Object Number: 422256  Size: SH
  4. Remove the suction hose from the accumulator.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.

  7. Object Number: 1870058  Size: SH
  8. Disconnect the suction hose nut (2).
  9. Remove the suction hose (1).

Installation Procedure

Important: Inspect the sealing washers for damage.

Replace the sealing washers that show any signs of damage.

Sealing washers do not require lubrication.


    Object Number: 1870058  Size: SH
  1. Install the suction hose (1).
  2. 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. Connect the suction hose (1) to the compressor.
  4. Install the suction hose nut (2) to the compressor.
  5. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  6. Lower the vehicle.

  7. Object Number: 422256  Size: SH
  8. Install the suction hose to the accumulator.
  9. Install the suction hose nut.
  10. Install the suction hose nut to the accumulator.
  11. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  12. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  13. Leak test the fittings of the repaired or reinstalled component using J 39400 .
  14. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.