FAQ: Does my Pontiac Grand Prix GXP have a PCV Valve?
05-13-2010, 03:50 PM
Technically there is a PCV but it is a maintenance free fixed orifice device. So basically there is no owner or mechanic replaceable PCV (Positive Crankcase Ventilation) valve for the LS4 5.3L V8 engine used in '05-'08 GXPs.
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