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.

  1. Turn OFF the ignition.

  2. Object Number: 239513  Size: SH
  3. Disconnect the MAF sensor (5) harness connector.
  4. Remove the bolts that secure the front air filter housing tabs (3).

  5. Object Number: 239513  Size: SH
  6. Loosen the clamps on the MAF sensor (5).
  7. Carefully remove the MAF sensor (5) from the air intake ducts.

Installation Procedure


    Object Number: 239513  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Ensure that the MAF sensor (5) flow arrows point away from the air cleaner assembly.

  1. Install the MAF sensor into the air intake ducts.
  2. Tighten the clamps on the MAF sensor (5).
  3. Tighten
    Tighten the clamps to 4 N·m (35 lb. in.)

  4. Install the bolts that secure the front air filter housing tabs (3).

  5. Object Number: 239513  Size: SH
  6. Connect the MAF sensor (5) harness connector.
  7. Start the engine and inspect for air leaks.