GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 G6 🢒 Engine 🢒 Engine Controls and Fuel - 3.9L 🢒 Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

Removal Procedure

    Object Number: 1583638 Size: SH
  1. Remove the positive crankcase ventilation (PCV) fresh air tube from the air cleaner intake duct.
  2. Disconnect the mass air flow (MAF)/intake air temperature (IAT) sensor electrical connector.

    3. Object Number: 1236151 Size: SH
  3. Loosen the clamps and remove the air cleaner intake duct with the MAF/IAT sensor from the throttle body and the air cleaner housing cover.
  4. Loosen the clamp and remove the MAF/IAT sensor from the air cleaner intake duct.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1236151 Size: SH
  1. Install the MAF/IAT sensor to the air cleaner intake duct.

    2. Tighten
    Tighten the clamp to 2 N·m (18 lb in).

  2. Install the air cleaner intake duct with the MAF/IAT sensor to the throttle body and the air cleaner housing cover.

    3. Tighten
    Tighten the clamps to 2 N·m (18 lb in).


    Object Number: 1583638 Size: SH
  3. Connect the MAF/IAT sensor electrical connector.
  4. Install the PCV fresh air tube to the air cleaner intake duct.
  5. Start and idle the engine.
  6. Inspect the air intake duct for leaks.