GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

  2. Object Number: 1370535  Size: SH
  3. Disconnect the positive crankcase ventilation (PVC) fresh air pipe (1) from the air cleaner duct.

  4. Object Number: 1087858  Size: SH
  5. Disconnect the PVC fresh air pipe (1) from the valve cover.

  6. Object Number: 1870253  Size: SH
  7. Disconnect the PVC foul air pipe (1) from the intake manifold.

Installation Procedure


    Object Number: 1870253  Size: SH
  1. Connect the PVC foul air pipe (1) to the PVC valve.

  2. Object Number: 1087858  Size: SH
  3. Connect the PVC fresh air pipe (1) to the valve cover.

  4. Object Number: 1370535  Size: SH
  5. Connect the PVC fresh air pipe (1) to the air cleaner duct.
  6. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .