GM Service Manual Online
For 1990-2009 cars only

Ambient Temperature Sensor Replacement CJ4

Removal Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

  2. Object Number: 528140  Size: SH
  3. Disconnect the electrical connector (1) from the ambient temperature sensor (3) that is located on the right front radiator air baffle.
  4. Remove the push-in retainer (2) from the ambient temperature sensor.
  5. Remove the ambient temperature sensor (3) from the radiator air baffle.

Installation Procedure


    Object Number: 528140  Size: SH
  1. Align the ambient temperature sensor (3) to the radiator air baffle.
  2. Install the push-in retainer (2) to the ambient temperature sensor.
  3. Connect the electrical connector (1) to the ambient temperature sensor.
  4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  5. Drive the vehicle at a speed of 32 km/h (20 mph) for approximately one and a half minutes or at a speed of 72 km/h (45 mph) for approximately one minute in order to obtain the ambient update.