GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1485981  Size: SH
  1. Remove the positive crankcase ventilation (PCV) dirty air hose from the intake manifold and valve rocker arm cover.
  2. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .

  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. Install the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .

  3. Object Number: 1485981  Size: SH
  4. Install the PCV dirty air hose to the intake manifold and valve rocker arm cover.