GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Use 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 sensor. Do not touch the sensing elements or allow anything including cleaning solvents and/or 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: 674702  Size: SH
  1. Remove air outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  2. Lift up the gray retainer, until a click is heard.
  3. Disconnect the sensor electrical connector (4).
  4. Loosen the clamp securing the sensor.
  5. Remove the sensor.

Installation Procedure

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


    Object Number: 359112  Size: SH
  1. Locate the arrow (2) on the sensor.

  2. Object Number: 674702  Size: SH
  3. Install the sensor.
  4. Tighten the clamp securing the sensor.
  5. Connect the sensor electrical connector (4).
  6. Push down the gray retainer, until a click is heard.
  7. Install air outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .