GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Engine 🢒 Engine Mechanical - 3.9L 🢒 Positive Crankcase Ventilation (PCV) Valve Cleaning and Inspection

    Object Number: 1578567 Size: SH

    Caution: Do not attempt to remove the valve from the valve rocker arm cover, as damage may occur to the rocker arm valve cover. The positive crankcase ventilation (PCV) valve is a fixed orifice system.

  1. Flush the carbon from the PCV valve orifices (1) using solvent.
  2. Dry the PCV valve orifices using compressed air.