Hello guys looking for.answers I have a 2004 chevy monte carlo SS and the egr valve has to b replace the dealership said the part is discontinued I tried a after market part but the check engine light comes on saying it's the egr valve I tried goin to a junk yard to get it off another monte same year and still have engine light on I had the throttle body clean out 2x and still same iissue
any suggestions?