GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 30029  Size: SH
  1. Remove the fasteners from the air cleaner cover (2).
  2. Lift the air cleaner cover (2), MAF sensor and the resonator as a unit.
  3. Remove the air filter element (3).
  4. Inspect the air filter element (3) for dust, dirt and water. Clean or replace if as necessary. Refer to Section OB.

Installation Procedure

    Notice: If the mass air flow (MAF) sensor is installed backwards, the system will go rich. An arrow cast into the plastic portion of the sensor indicates proper air flow direction. The arrow must point toward the engine.


    Object Number: 30029  Size: SH
  1. Install the air filter element (3) into the air cleaner housing (4).
  2. Position the air cleaner cover (2), MAF sensor (6) and the resonator (7) back into place.
  3. Connect the fasteners to the air cleaner cover (2).
  4. Check the clamps at the MAF sensor (6) and tighten as necessary.
  5. Check joints between the ducts, resonators and the throttle body for possible leaks. Repair as necessary.