Removal & installation

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the refrigerant pressure sensor electrical connector. See Fig 1. Remove the refrigerant pressure sensor from the fitting. See Fig 2. Remove and discard the O-ring.
Install a NEW O-ring seal in the refrigerant pressure sensor. Install the pressure sensor to the fitting. Tighten the sensor to specification. See TORQUE SPECIFICATIONS . Connect the refrigerant pressure sensor electrical connector.

Fig 1: Locating A/C Refrigerant Pressure Sensor

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing & Installing A/C Refrigerant Pressure Sensor

Courtesy of GENERAL MOTORS CORP.