GM Service Manual Online
For 1990-2009 cars only

Crankcase Ventilation System Inspection VIN K

Removal Procedure


    Object Number: 378514  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Remove the MAP sensor electrical connector (2) from the MAP sensor (1).

  3. Object Number: 12315  Size: MH
  4. Remove the MAP sensor (1).
  5. Use a 16 mm socket to press the access cover (2) down and rotate 1/4 turn counterclockwise.
  6. Remove the access cover.
  7. Remove the PCV valve (3) and the O-ring (4) from the intake manifold.

Installation Procedure


    Object Number: 12315  Size: MH
  1. Install the crankcase ventilation valve (3) ; replace the O-ring (4) if necessary.
  2. Install the access cover (2).
  3. Install the MAP sensor.

  4. Object Number: 378514  Size: SH
  5. Install the MAP sensor electrical connector (2) to the MAP sensor (1).
  6. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

Crankcase Ventilation System Inspection VIN 1

Removal Procedure

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

  2. Object Number: 393157  Size: SH
  3. Remove the 2 access cover retaining bolts (1), while holding down the crankcase ventilation valve access cover (2).
  4. Remove the crankcase ventilation valve access cover (2).
  5. Remove the spring (3).
  6. Remove the crankcase ventilation valve (4) and O-ring (5).

Installation Procedure


    Object Number: 393157  Size: SH
  1. Install the crankcase ventilation valve (4) and O-ring (5).
  2. Install the spring (3).
  3. Install the crankcase ventilation valve access cover (2).
  4. Install the 2 access cover retaining bolts, while holding down the crankcase ventilation valve access cover.
  5. Reinstall the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .