GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 CTS 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

    Important: No schrader valve appears under the pressure sensor.

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Remove the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement.

    3. Object Number: 789018 Size: SH
  3. Disconnect the electrical connector (1) from the A/C refrigerant pressure sensor (2).
  4. Remove the A/C refrigerant pressure sensor.

Installation Procedure

    Object Number: 789018 Size: SH
  1. Lubricate the O-ring with refrigerant oil. Refer to O-Ring Replacement.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the A/C refrigerant pressure sensor (2).

    3. Tighten
    Tighten the sensor to 9.8 N·m (87 lb in).

  3. Connect the electrical connector (1) to the A/C refrigerant pressure sensor.
  4. Install the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement.
  5. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
  6. Leak test the fittings of the component using J 39400-A .