GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express 🢒 Engine 🢒 Engine Controls and Fuel - 4.3L 🢒 Mass Airflow Sensor with Intake Air Temperature Sensor Replacement

Removal Procedure

    Object Number: 1934979 Size: SH
  1. Loosen the air cleaner outlet duct clamp (1) at the mass airflow (MAF)/Intake air temperature (IAT) sensor.
  2. Remove the air cleaner outlet duct (2) from the MAF/IAT sensor and position out of the way.

    3. Object Number: 1934890 Size: SH
  3. Disconnect the engine wiring harness electrical connector (6) from the MAF/IAT sensor (5).

    4. Object Number: 1934895 Size: SH
  4. Remove the MAF/IAT sensor bolts (2).
  5. Remove the MAF/IAT sensor (1) from the air cleaner housing.

Installation Procedure

    Object Number: 1934895 Size: SH
  1. Install the MAF/IAT sensor (1) to the air cleaner housing.

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

  2. Install the MAF/IAT sensor bolts (2) and tighten to 9 N·m (80 lb in).

    3. Object Number: 1934890 Size: SH
  3. Connect the engine wiring harness electrical connector (6) to the MAF/IAT sensor (5).

    4. Object Number: 1934979 Size: SH
  4. Position and install the air cleaner outlet duct (2) to he MAF/IAT sensor.
  5. Tighten the air cleaner outlet duct clamp (1) at the MAF/IAT sensor and tighten to 5 N·m (44 lb in).