GM Service Manual Online
For 1990-2009 cars only

The intake air temperature (IAT) sensor (3) is mounted in the rear air intake duct (2).

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 74279  Size: SH
  3. Disconnect the IAT sensor electrical connector.
  4. Use a twisting and pulling motion in order to remove the IAT sensor (3).

Installation Procedure


    Object Number: 74279  Size: SH
  1. Insert the IAT sensor (3) into the rear air intake duct (2).
  2. Connect the IAT sensor electrical connector.
  3. Connect the negative battery cable.