GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1385109  Size: SH
  1. Disconnect the MAF/IAT sensor electrical connector (1).
  2. Remove the air cleaner outlet duct assembly. Refer to Air Cleaner Outlet Duct Replacement .
  3. Loosen the MAF/IAT clamp (2).
  4. Notice: 

       • Handle the MAF sensor carefully.
       • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
       • Do not damage the screen located on the air inlet end of the MAF.
       • Do not touch the sensing elements.
       • Do not allow solvents and lubricants to come in contact with the sensing elements.
       • Use a small amount of a soap based solution in order to aid in the installation.

  5. Remove the MAF/IAT sensor from the air cleaner outlet duct. Note the position of the MAF/IAT sensor.

Installation Procedure


    Object Number: 1385109  Size: SH

    Notice: 

       • Handle the MAF sensor carefully.
       • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
       • Do not damage the screen located on the air inlet end of the MAF.
       • Do not touch the sensing elements.
       • Do not allow solvents and lubricants to come in contact with the sensing elements.
       • Use a small amount of a soap based solution in order to aid in the installation.

  1. Carefully install the MAF/IAT sensor to the air cleaner outlet duct. Ensure that sensor is clocked properly.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Tighten the air cleaner outlet duct clamp (2).
  4. Tighten
    Tighten the air cleaner outlet duct clamp to 3 N·m (27 lb in).

  5. Loosely install the air cleaner outlet duct assembly to the vehicle.
  6. Connect the MAF/IAT sensor electrical connector.
  7. Install the air cleaner outlet duct assembly. Refer to Air Cleaner Outlet Duct Replacement .