GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1201074  Size: SH
  1. Disconnect the mass air flow (MAF)/intake air temperature (IAT) sensor electrical connector.

  2. Object Number: 1201220  Size: SH
  3. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.

  4. Object Number: 1201263  Size: SH
  5. Remove the MAF/IAT sensor screws.
  6. Caution: 

       • 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.

  7. Carefully remove the MAF/IAT sensor from the air cleaner housing cover.
  8. Discard the MAF/IAT sensor gasket.

Installation Procedure


    Object Number: 1201263  Size: SH

    Caution: 

       • 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. Install a NEW MAF/IAT sensor gasket.
  2. Carefully install the MAF/IAT sensor into the air cleaner housing cover.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the MAF/IAT sensor screws and tighten to 4 N·m (35 lb in).

  5. Object Number: 1201220  Size: SH
  6. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.

  7. Object Number: 1201074  Size: SH
  8. Reconnect the MAF/IAT sensor electrical connector.