GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: 

   • Handle the MAF sensor carefully.
   • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
   • Do not damage the screen located on the air inlet end of the MAF.
   • Do not touch the sensing elements.
   • Do not allow solvents and lubricants to come in contact with the sensing elements.
   • Use a small amount of a soap based solution in order to aid in the installation.


    Object Number: 1670786  Size: SH
  1. Disconnect the engine harness electrical connector from the mass air flow/intake air temperature (MAF/IAT) sensor.

  2. Object Number: 1670790  Size: SH
  3. Loosen the air cleaner outlet duct clamp at the throttle body.

  4. Object Number: 1670799  Size: SH
  5. Loosen the air cleaner outlet duct clamp at the MAF/IAT sensor.
  6. Remove the air cleaner outlet duct.

  7. Object Number: 1670874  Size: SH
  8. Remove the MAF/IAT sensor bolts.
  9. Remove the MAF/IAT sensor.

Installation Procedure

Notice: 

   • Handle the MAF sensor carefully.
   • Do not drop the MAF sensor in order to prevent damage to the MAF sensor.
   • Do not damage the screen located on the air inlet end of the MAF.
   • Do not touch the sensing elements.
   • Do not allow solvents and lubricants to come in contact with the sensing elements.
   • Use a small amount of a soap based solution in order to aid in the installation.


    Object Number: 1670874  Size: SH
  1. Install the MAF/IAT sensor.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the MAF/IAT sensor bolts.
  4. Tighten
    Tighten the bolts to 4 N·m (35 lb in).


    Object Number: 1670799  Size: SH
  5. Install the air cleaner outlet duct.
  6. Tighten the air cleaner outlet duct clamp at the MAF/IAT sensor.
  7. Tighten
    Tighten the clamp to 4 N·m (35 lb in).


    Object Number: 1670790  Size: SH
  8. Tighten the air cleaner outlet duct clamp at the throttle body.
  9. Tighten
    Tighten the clamp to 4 N·m (35 lb in).


    Object Number: 1670786  Size: SH
  10. Connect the engine harness electrical connector to the MAF/IAT sensor.