GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1608799  Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement.
  2. Disconnect the positive crankcase ventilation (PCV) fresh air tube from the air cleaner outlet duct. Refer to Plastic Collar Quick Connect Fitting Service.
  3. Remove the PCV fresh air tube from the rocker arm cover.
  4. Remove the PCV fresh air tube from the vehicle.

  5. Object Number: 1608801  Size: SH
  6. Disconnect the PCV foul air tube from the PCV valve. Refer to Plastic Collar Quick Connect Fitting Service.
  7. Remove the PCV foul air tube from the intake manifold.
  8. Remove the PCV foul air tube from the vehicle.

Installation Procedure


    Object Number: 1608801  Size: SH
  1. Install the PCV foul air tube to the vehicle.
  2. Install the PCV foul air tube to the intake manifold.
  3. Connect the PCV foul air tube to the PCV valve. Refer to Plastic Collar Quick Connect Fitting Service.

  4. Object Number: 1608799  Size: SH
  5. Install the PCV fresh air tube to the vehicle.
  6. Install the PCV fresh air tube to the rocker arm cover.
  7. Connect the PCV fresh air tube to the air cleaner outlet duct. Refer to Plastic Collar Quick Connect Fitting Service.
  8. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.