GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 444792  Size: SH
  1. Disconnect the positive crankcase ventilation (PCV) tube from the air cleaner duct.
  2. Disconnect the PCV tube from the right valve rocker arm cover.

  3. Object Number: 172995  Size: SH
  4. Disconnect the PCV valve hose assembly from the intake manifold.
  5. Disconnect the PCV valve hose assembly from the left valve rocker arm cover.
  6. Inspect the tube and hose for cuts or cracking.
  7. Inspect the grommets in the valve rocker arm covers for cuts or cracking.
  8. Replace the PCV hose/tube as required.

Installation Procedure


    Object Number: 172995  Size: SH
  1. Connect the PCV valve hose assembly to the intake manifold.
  2. Connect the PCV valve hose assembly to the left valve rocker arm cover.

  3. Object Number: 444792  Size: SH
  4. Connect the positive crankcase PCV tube to the air cleaner duct.
  5. Connect the PCV tube to the right valve rocker arm cover.