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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 203 (Engine Mechanical - 3.5L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Valve Rocker Arm Cover - Left
    GM54369Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The positive crankcase ventilation (PCV) valve is not removable from the valve rocker arm cover. The PCV valve and rocker arm cover must be replaced as an assembly.
  1. Remove the left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left .
  2. IMPORTANT: If the PCV valve is not defective it may be possible to clean the valve rather than replacing the rocker arm cover.
    Fig 2: View Of PCV Baffle, Screws, PCV Valve & Valve Cover
    GM1456046Courtesy of GENERAL MOTORS CORP.
  3. Remove the PCV baffle.
    1. Remove the screws (1) from the PCV baffle.
    2. Clean the PCV valve (3).
  4. If the PCV valve is defective or cannot be effectively cleaned the valve cover (4) must be replaced.