GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Note: Use care when handling the mass air flow (MAF)/intake air temperature (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.


    Object Number: 898340  Size: SH
  1. Disconnect the MAF/IAT sensor electrical connector.

  2. Object Number: 898123  Size: SH
  3. Loosen the clamps at the MAF/IAT sensor and the throttle body.
  4. Remove the air cleaner outlet duct bolt.
  5. Remove the air cleaner outlet duct.
  6. Loosen the clamp attaching the MAF/IAT sensor to the air cleaner housing.
  7. Remove the MAF/IAT sensor from the air cleaner housing.

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. Object Number: 898123  Size: SH
  3. Install the MAF/IAT sensor on to the air cleaner housing.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Tighten the clamp securing the MAF/IAT sensor to the air cleaner housing. Tighten the clamp to 7 N·m (62 lb in).
  6. Install the air cleaner outlet duct.
  7. Install the air cleaner outlet duct bolt and tighten to 10 N·m (89 lb in).
  8. Tighten the clamps at the MAF/IAT sensor and the throttle body to 7 N·m (62 lb in).

  9. Object Number: 898340  Size: SH
  10. Connect the MAF/IAT electrical connector.