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 A/C system. Refer to Refrigerant Recovery and Recharging .

  2. Object Number: 769765  Size: SH
  3. Remove the evaporator outlet hose retaining nut (5) from the accumulator.

  4. Object Number: 769799  Size: SH
  5. Remove the compressor inlet hose retaining nut (2).
  6. Disconnect the low pressure sensor electrical connector.

  7. Object Number: 769756  Size: SH
  8. Remove the retaining nuts (3) from the accumulator retaining bracket.
  9. Remove the accumulator (5) from the bracket.
  10. Remove the sealing washers.

Installation Procedure

  1. Add oil to the accumulator. Refer to Refrigerant System Capacities .

  2. Object Number: 769756  Size: SH
  3. Install the accumulator (5) to the bracket.
  4. 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.

  5. Install the nuts (3) to the accumulator retaining bracket.
  6. Tighten
    Tighten the nuts to 9 N·m (80 lb in).

  7. Connect the low pressure sensor electrical connector.
  8. Install new sealing washers. Refer to O-Ring Replacement .
  9. Install the evaporator outlet hose.
  10. Install the evaporator outlet hose retaining nut (5) to the accumulator.
  11. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  12. Install the compressor inlet hose.

  13. Object Number: 769799  Size: SH
  14. Install the compressor inlet hose retaining nut (2) to the accumulator.
  15. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  16. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  17. Leak test the fittings of the component using the J 39400-A .