GM Service Manual Online
For 1990-2009 cars only

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. Remove the instrument panel upper trim panel. Refer to Instrument Panel Upper Trim Pad Replacement in Instrument Panel, Gauges and Console.
  3. Disconnect the aspirator hose (2) from the sensor (1).

  4. Object Number: 304998  Size: SH
  5. Disconnect the electrical connector (3).
  6. Remove the retaining screw (4) from the inside air temperature sensor (1).
  7. Remove the inside air temperature sensor (1).

Installation Procedure


    Object Number: 304998  Size: SH
  1. Secure the temperature sensor (1) with the retaining screw (4).
  2. Connect the electrical connector (3).
  3. Install the aspirator hose (2) to the sensor (1) and clip.
  4. Install the instrument panel upper trim panel. Refer to Instrument Panel Upper Trim Pad Replacement in Instrument Panel, Gauges and Console.
  5. Connect the negative battery cable.