GM Service Manual Online
For 1990-2009 cars only

Special Tools

J-39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 1547621  Size: SH
  1. Recover the refrigerant from the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging .
  2. Note: Immediately cap or tape the open A/C compressor opening immediately in order to prevent system contamination.

  3. Remove the high pressure relief valve (1).
  4. Remove and discard the O-ring seal (2).
  5. Cap or tape the pressure relief valve port .

Installation Procedure


    Object Number: 1547621  Size: SH
  1. Lubricate and install the NEW O-ring seal (2). Refer to O-Ring Replacement .
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Remove the cap or tape from the pressure relief valve port .
  4. Install the high pressure relief valve (1) and tighten to 12 N·m (106 lb in) .
  5. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  6. Leak test the fitting of the component using J 39400-A .