GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1485981  Size: SH
  1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the positive crankcase ventilation (PCV) foul air hose from the intake manifold and valve rocker arm cover.

  3. Object Number: 1522414  Size: SH
  4. Remove the PCV fresh air hose (2) from the valve rocker arm cover (1).

Installation Procedure


    Object Number: 1522414  Size: SH
  1. Install the PCV fresh air hose (2) to the valve rocker arm cover (1).

  2. Object Number: 1485981  Size: SH
  3. Install the PCV foul air hose to the intake manifold and valve rocker arm cover.
  4. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .