GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2008 🢒 Grand Prix 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Positive Crankcase Ventilation Valve Replacement

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

    2. Object Number: 12315 Size: MH
  2. Disconnect the manifold absolute pressure (MAP) sensor electrical connector.
  3. Remove the MAP sensor (1).
  4. Use a 16 mm (5/8 in) socket to press the access cover (2) down and rotate 1/4 turn counterclockwise.
  5. Remove the access cover.
  6. Remove the positive crankcase ventilation (PCV) valve (3) and the O-ring (4) from the intake manifold.

Installation Procedure

    Object Number: 12315 Size: MH
  1. Install the new O-ring (4) and the PCV valve (3).
  2. Install the access cover (2).
  3. Install the MAP sensor (1).
  4. Connect the MAP sensor electrical connector.
  5. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .