GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Disconnect the electrical connector from the A/C low pressure switch.
  3. Remove the compressor hose nut from the accumulator.
  4. Remove the compressor hose from the accumulator.

  5. Object Number: 660416  Size: SH
  6. Remove the nut (2) from the evaporator fitting.
  7. Remove the accumulator bracket nut (4) from the retaining stud.
  8. Remove the accumulator (3).
  9. Remove the retaining bracket bolt (5).
  10. Remove the retaining bracket (6) from the accumulator (3).
  11. Remove and discard the O-ring seals.

Installation Procedure


    Object Number: 660416  Size: SH
  1. Add the proper amount of PAG oil to the accumulator. Refer to Refrigerant System Capacities.
  2. Install new O-ring seals. Refer to O-Ring Replacement.
  3. Install the retaining bracket (6) to the accumulator.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the retaining bracket bolt (5).
  6. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  7. Install the accumulator (3).
  8. Install the accumulator bracket nut (4).
  9. Tighten
    Tighten the nut to 9 N·m (80 lb in).

  10. Install the nut (2) to the evaporator fitting.
  11. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

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

  15. Connect the electrical connector to the A/C low pressure switch.
  16. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging.
  17. Leak test the fittings of the component using the J 39400-A .