GM Service Manual Online
For 1990-2009 cars only

Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement L61/L66

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 1340530  Size: SH
  3. Disconnect the electrical connector from the refrigerant pressure sensor.
  4. Remove the refrigerant pressure sensor from the compressor hose.

Installation Procedure


    Object Number: 1340530  Size: SH

    Important: Use R-12 refrigerant oil (mineral) to lubricate O-rings. Use of R-134a (PAG) oil will cause premature corrosion of fitting joints.

  1. Lubricate the refrigerant pressure sensor O-ring with mineral oil. 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. Hand start the refrigerant pressure sensor to the compressor hose, taking care not to pinch the O-ring and tighten.
  4. Tighten
    Tighten the pressure sensor to 10 N·m (89 lb in).

  5. Install the electrical connector to the refrigerant pressure sensor.
  6. Lower the vehicle.

Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement LAT


Object Number: 1847145  Size: MF

Callout

Component Name

Preliminary Procedure

Remove the left headlamp assembly. Refer to Headlamp Assembly or Headlamp Bulb and/or Cornering, Sidemarker, Park, Turn Signal Bulb Replacement

1

Refrigerant Pressure Sensor

Procedure

    • Disconnect the electrical connector from the refrigerant pressure sensor.
    • Hand start the refrigerant pressure sensor to the receiver dehydrator, taking care not to pinch the O-ring and tighten.

Tighten
4 N·m (35 lb in)

2

O-ring

Procedure

    • Lubricate the new refrigerant pressure sensor O-ring with mineral oil. Refer to O-Ring Replacement
    • Remove and discard the O-ring.