GM Service Manual Online
For 1990-2009 cars only

Positive Crankcase Ventilation Valve Replacement L36

Removal Procedure

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

  2. Object Number: 12315  Size: MH
  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 PCV valve (3) and the O-ring (4) from the intake manifold.

Installation Procedure


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