GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 34611-A Valve Core Remove and Installer
    • J 39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 588312  Size: SH
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Disconnect the refrigerant pressure sensor electrical connector.

  3. Object Number: 588316  Size: SH
  4. Remove the refrigerant pressure sensor from the fitting.

  5. Object Number: 369066  Size: SH
  6. Remove and discard the O-ring.

Installation Procedure


    Object Number: 369066  Size: SH
  1. Install a NEW O-ring seal in the refrigerant pressure sensor.

  2. Object Number: 588316  Size: SH
  3. Coat the O-ring seal with 525 viscosity refrigerant oil.
  4. 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.

  5. Install the refrigerant pressure sensor to the fitting.
  6. Tighten
    Tighten therefrigerant pressure sensor to 5 N·m (44 lb in).


    Object Number: 588312  Size: SH
  7. Connect the refrigerant pressure sensor electrical connector.
  8. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  9. Leak test the fittings of the component using the J 39400-A .