GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G8 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

Removal Procedure
  1. Remove the radiator and air baffle. Refer to Radiator Air Upper Baffle and Deflector Replacement.

    2. Object Number: 1950766 Size: SH
  2. Disconnect the mass air flow (MAF)/air intake temperature (IAT) wiring harness connector (2) to mass air flow (MAF)/air intake temperature (IAT) sensor (1).

    3. Object Number: 1950770 Size: SH
  3. Loosen the air intake duct to MAF/IAT sensor retaining clamp (2).
  4. Loosen the upper air cleaner body to MAF/IAT sensor retaining clamp (1).
  5. Remove the air intake duct from the mass air flow MAF/IAT sensor.
  6. Remove the MAF/IAT sensor (3) from the upper air cleaner body.

Installation Procedure

    Object Number: 1950770 Size: SH

    Note:  Make sure that the arrow on the MAF/IAT sensor is pointing to the front, radiator, indicate the proper air flow direction. The arrow must point toward the engine.

  1. Install the MAF/IAT sensor to the upper air cleaner body.
  2. Install the air intake duct to the MAF/IAT sensor.
  3. Position the retaining clamps (1 and 2) to the MAF/IAT sensor.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Tighten the MAF/IAT retaining clamps (1 and 2) to 4  N·m  (35 lb in).

    5. Object Number: 1950766 Size: SH
  5. Connect the MAF/IAT wiring harness connector (2) to the MAF/IAT sensor.
  6. If re-programming is required, refer to Control Module References.
  7. Install the radiator and air baffle. Refer to Radiator Air Upper Baffle and Deflector Replacement.