GM Service Manual Online
For 1990-2009 cars only

Special Tools

J-39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 1547629  Size: SH
  1. Disconnect the air conditioning (A/C) refrigerant pressure sensor electrical connector (1).
  2. Remove the A/C refrigerant pressure sensor (2).
  3. Inspect and replace the O-ring seal (3) as necessary.

Installation Procedure

Note: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the O-ring seal to enter the refrigerant system.


    Object Number: 1547629  Size: SH
  1. Lightly coat the O-ring seal (3) with mineral base 525 viscosity oil.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the A/C refrigerant pressure sensor (2) and tighten to 5 N·m (44 lb in) .
  4. Connect the A/C refrigerant pressure sensor electrical connector (1).
  5. Leak test the fitting using the J-39400-A detector .