GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 380181  Size: SH
  1. Disconnect the refrigerant pressure sensor electrical connector.

  2. Object Number: 380079  Size: SH
  3. Remove the pressure sensor (1) from the evaporator tube - front.
  4. Remove and discard the O-ring.

Installation Procedure


    Object Number: 380079  Size: SH
  1. Install a new O-ring. Refer to O-Ring Replacement .
  2. 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.

  3. Install the pressure sensor (1) to the evaporator tube - front.
  4. Tighten
    Tighten the sensor to 4.75 N·m (42 lb in).


    Object Number: 380181  Size: SH
  5. Connect the pressure sensor electrical connector.
  6. Leak test the fittings of the component using J 39400-A .