GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Note: 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.


    Object Number: 359112  Size: SH
  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.

Installation Procedure

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


    Object Number: 359112  Size: SH
  1. Locate the air flow direction arrow (2) on the MAF/IAT sensor.
  2. Install the MAF/IAT sensor onto the air cleaner housing.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the MAF/IAT sensor retaining bolts.
  5. Tighten
    Tighten the bolts to 11 N·m (97 lb in).

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