GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: An engine operating without any crankcase ventilation can be damaged. Replace the crankcase ventilation valve and air cleaner filter at the intervals shown in the General Information.

Periodically inspect the hoses and clamps. Replace any hoses or clamps showing signs of deterioration.


    Object Number: 313008  Size: SH
  1. Remove the Crankcase Ventilation Valve (2) from the Valve Rocker Arm Cover.
  2. Remove the Crankcase Ventilation Valve from the tube assembly (1).

Installation Procedure


    Object Number: 313008  Size: SH
  1. Install the Crankcase Ventilation Valve(2) to the tube assembly (1).
  2. Install the Crankcase Ventilation Valve to the Valve Rocker Arm Cover.