GM Service Manual Online
For 1990-2009 cars only
Makes šŸ¢’ Cadillac šŸ¢’ 2005 šŸ¢’ STS šŸ¢’ Body šŸ¢’ Wiring Systems šŸ¢’ Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

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
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .

    3. Object Number: 1201263 Size: SH
  3. Remove the MAF/IAT sensor screws.

    4. Notice: 

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

  4. Carefully remove the MAF/IAT sensor from the air cleaner housing cover.
  5. Discard the MAF/IAT sensor gasket.

Installation Procedure

    Object Number: 1201263 Size: SH

    Notice: 

       ā€¢ Handle the MAF sensor carefully.
       ā€¢ Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
       ā€¢ Do not damage the screen located on the air inlet end of the MAF.
       ā€¢ Do not touch the sensing elements.
       ā€¢ Do not allow solvents and lubricants to come in contact with the sensing elements.
       ā€¢ 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. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the MAF/IAT sensor screws.

    4. Tighten
    Tighten the screws to 4 NĀ·m (35 lb in).


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

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