GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 647793  Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the positive crankcase ventilation (PCV) tube from the intake manifold and valve rocker arm cover.

  3. Object Number: 647795  Size: SH
  4. Remove the vent hose from the throttle body and the valve rocker arm cover.
  5. Replace the hose/tube as necessary.

Installation Procedure


    Object Number: 647795  Size: SH
  1. Install the vent hose to the throttle body and the valve rocker arm cover.

  2. Object Number: 647793  Size: SH
  3. Install the PCV tube to the intake manifold and valve rocker arm cover.
  4. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.