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: 1897141  Size: SH
  1. Disconnect the engine wiring harness electrical connector (1) from the MAF/IAT sensor.

  2. Object Number: 1897143  Size: SH
  3. Remove the MAF/IAT sensor screws (1).
  4. Remove the MAF/IAT sensor (2) from the air cleaner upper 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: 1897143  Size: SH
  1. Install the MAF/IAT sensor (2) to the air cleaner upper housing.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the MAF/IAT sensor screws (1).
  4. Tighten
    Tighten the screws to 1.5 N·m (13 lb in).


    Object Number: 1897141  Size: SH
  5. Connect the engine wiring harness electrical connector to the MAF/IAT sensor.