So the 02 sierra has a anti theft system that is total bs. If the truck is locked and u try to open it,it throws a security light that drains your battery until u disconnect the ground for 12hrs,relea…
Installed a rebuilt crate engine due to a broken rod in the original engine. Old engine still ran with broken rod. Installed new engine and get code P0336. Truck will NOT run. New AC Delco cam and cra…