GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

Removal Procedure

    Object Number: 1385108 Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
  2. Loosen the air cleaner outlet duct clamps (1, 2).
  3. Partially remove the air cleaner outlet duct from the air cleaner housing to gain access to the mass air flow/intake air temperature (MAF/IAT) sensor electrical connector.

    4. Object Number: 1385109 Size: SH
  4. Disconnect the MAF/IAT sensor electrical connector (1).
  5. Remove the air cleaner outlet duct assembly.
  6. Loosen the MAF/IAT clamp (2).

    7. 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.

  7. 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.

  2. Tighten the air cleaner outlet duct clamp (2).

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

  3. Loosely install the air cleaner outlet duct assembly to the vehicle.
  4. Connect the MAF/IAT sensor electrical connector.

    5. Object Number: 1385108 Size: SH
  5. Install the air cleaner outlet duct to the air cleaner housing.
  6. Tighten the air cleaner outlet duct clamps (1, 2).

    7. Tighten
    Tighten the air cleaner outlet duct clamps to 3 N·m (27 lb in).

  7. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.