GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 720720  Size: SH
  1. Loosen the hose clamp for the positive crankcase ventilation (PCV) valve (1).
  2. Remove the intake manifold vacuum hose (2) from the PCV valve.
  3. Remove the PCV valve from the valve cover.

Installation Procedure


    Object Number: 720720  Size: SH
  1. Install the PCV valve (1) into the valve cover.
  2. Connect the intake manifold vacuum hose (2) to the PCV valve.
  3. Secure the PCV valve with the hose clamp.