i bought a gm certified, pre owned gmc 1500 ext cab sle. i was not informed until after the papers were signed that the gm certified warranty is void if you finance with anyone but gmac. now i have a truck with a collapsed front spring, and some other lose parts in the front end. i have owned the truck for 5 days, and the guys at cooper say i have to pay for the repairs out of pocket. Thats not right, if a vehicle is certified, it should be certified no matter how its paid for. even though i have friends that work at cooper,..i cannot recommend anyone use this dealership.