GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement .

  3. Object Number: 924798  Size: SH
  4. Disconnect the electrical connector (2) from A/C low pressure sensor (1).
  5. Remove the evaporator outlet pipe retaining nut (3) from the accumulator.

  6. Object Number: 924799  Size: SH
  7. Remove the compressor suction hose retaining nut (1).
  8. Remove the compressor suction hose from the accumulator.

  9. Object Number: 834246  Size: SH
  10. Remove the retaining screw (4) from the accumulator retaining bracket (2).
  11. Remove the accumulator (1).
  12. Remove the sealing washers.

Installation Procedure

  1. If replacing the accumulator, add the specified amount of PAG oil directly into the accumulator. Refer to Refrigerant System Capacities .

  2. Object Number: 834246  Size: SH
  3. Install the accumulator (1).
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the screw (4) to the accumulator retaining bracket (2).
  6. Tighten
    Tighten the screw to 9 N·m (80 lb in).


    Object Number: 924798  Size: SH
  7. Connect the low pressure sensor electrical connector (1).

  8. Object Number: 924801  Size: SH
  9. Install new sealing washers. Refer to Sealing Washer Replacement .
  10. Install the evaporator outlet pipe.
  11. Install the evaporator outlet pipe retaining nut (1) to the accumulator.
  12. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  13. Install the compressor suction hose.
  14. Install the compressor suction hose retaining nut (2) to the accumulator.
  15. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  16. Install the coolant reservoir. Refer to Coolant Recovery Reservoir Replacement .
  17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  18. Leak test the fittings of the component using the J 39400-A .