Crankcase breather on a 1990 gmc sierra?

sniperlif3

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Well im wondering if i have one, where would i be able to find it at?
 
You have one, it's your PVC valve on top of your valve cover. The PVC valve is on the valve covers and the vacuum hose will go from there to the air cleaner. If you have after market valve covers or a previous owner wanted to eliminate the PVC valve, you may have just a performance filter on the valve cover as the breather. Good luck and keep me posted.
 


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