Duramax First Generation: 2001-2004 (LB7)
Just picked up a 03 duramax, slowly fixing leaks and what not on a 262k mile truck. question is PO did a pcv re route to the back of the truck. Ive noticed it has a decent amount of blowby (did the flip the oil cap trick, doesnt shoot the cap off but definitely wiggles around) but out of the pcv...