This differential was taken out of a 1 year old 2008 Silverado Duramax by Rudolph Chevrolet in El Paso. I had a limited slip installed and this is the original non slip OEM that came with the truck-NOT LIMITED SLIP- it is in the same condition it came out of the truck in and inclueds the bolts and parts to reinstall. E mail or Text only to 5O5 three 5 O two99one. Cash, no codes, no help.