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wheres the pcv valve at on 1998 GMC Sonoma

wheres the pcv valve located at on my 1998 gmc sonoma

Asked by for the 1998 GMC Sonoma
there is not one on that motor. the positive crank pressure vale is not used there is a vernt in the top of the valve cover that runs into a hose into the air box that is bolted onto of the cover