GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1522413  Size: SH
  1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Disconnect the positive crankcase ventilation (PCV) fresh air tube (2) from the air cleaner resonator outlet duct (1).

  3. Object Number: 1742576  Size: SH
  4. Loosen the air cleaner outlet duct clamps at the mass air flow (MAF)/intake air temperature (IAT) sensor, and the throttle body.
  5. Grasp the air cleaner outlet duct near the stud and firmly lift up, disengaging the duct from the stud.

Installation Procedure


    Object Number: 1742576  Size: SH
  1. Install the air cleaner outlet duct to the MAF/IAT sensor and the throttle body.
  2. Ensure that the air cleaner outlet duct flange is seated over the stud and firmly push down, securing the duct to the stud.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Tighten the air cleaner outlet duct clamps.
  5. Tighten
    Tighten the clamps to 7 N·m (62 lb in).


    Object Number: 1522413  Size: SH
  6. Connect the PCV fresh air tube (2) to the air cleaner resonator outlet duct (1).
  7. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .