Mass Airflow Sensor with Intake Air Temperature Sensor Replacement for Chevrolet Express 2008

Important: Take care when handling the mass air flow/intake air temperature (MAF/IAT) sensor. Do not dent, puncture, or otherwise damage the honeycell located at the air inlet end of the MAF/IAT. Do not touch the sensing elements or allow anything including cleaning solvents and lubricants to come in contact with them. Use a small amount of a non-silicone based lubricant, on the air duct only, to aid in installation. Do not drop or roughly handle the MAF/IAT sensor.

1. Disconnect the MAF/IAT sensor electrical connector (1).
2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
3. Loosen the clamp securing the MAF/IAT sensor to the air cleaner duct.
4. Remove the MAF/IAT sensor bolts from the air cleaner assembly.
5. Remove the MAF/IAT from the air cleaner.

Important: The embossed arrow on the MAF/IAT sensor indicates the proper air flow direction. The arrow must point toward the engine.

1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
2. Install the MAF/IAT sensor onto the air cleaner housing.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the MAF/IAT sensor retaining bolts.

Tighten
Tighten the bolts to 11 N·m (97 lb in).

4. Tighten the clamp securing the MAF/IAT sensor to the air cleaner duct.
5. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
6. Connect the MAF/IAT electrical connector (1).