GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1645247  Size: SH
  1. Remove the intake manifold sight shield. Refer to Intake Manifold Sight Shield Replacement .
  2. Disconnect the intake air temperature (IAT) sensor 2 electrical connector.

  3. Object Number: 1613989  Size: SH
  4. Remove the IAT sensor 2 (1).

Installation Procedure

Notice: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.


    Object Number: 1613989  Size: SH
  1. Coat the sensor threads with sealer. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the IAT sensor 2 (1).
  4. Tighten
    Tighten the IAT sensor 2 to 20 N·m (15 lb ft).


    Object Number: 1645247  Size: SH
  5. Connect the IAT sensor 2 electrical connector.
  6. Install the intake manifold sight shield. Refer to Intake Manifold Sight Shield Replacement .