GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LeSabre 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement

Removal Procedure

    Object Number: 422267 Size: SH
  1. Disconnect the electrical connector from the A/C refrigerant pressure sensor.
  2. Unscrew and remove the A/C refrigerant pressure sensor.
  3. Remove and discard the O-ring from the A/C refrigerant pressure sensor. Refer to O-Ring Replacement .

Installation Procedure

    Object Number: 422267 Size: SH

    Important: Lubricate the new O-ring prior to installation on the A/C refrigerant pressure sensor.

  1. Lightly coat the new O-ring with mineral base 525 viscosity refrigerant oil.
  2. Install the O-ring to the A/C refrigerant pressure sensor.

    3. 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 A/C refrigerant pressure sensor.

    4. Tighten
    Tighten the sensor to 5 N·m (44 lb in).

  4. Connect the electrical connector to the A/C refrigerant pressure sensor.
  5. Leak test the fittings using the J 39400-A .