Orderd new.... 2006 Crew Cab Silverado 2500 HD, 4X4 6.0 w/ 4 speed hd transmission.... Loaded, Loved the truck had every option. at 1,000 miles the truck had developed issues with my rear doors not opening properly, at 3,000 miles issues with doors came back, started getting bad gear oil smell comming from thevents of the cab, complained about it several times to GM they found "nothing wrong" after about the 4th time bringing it in for that smell, it was now grinding, vibrating and making all kinds of noise in the front end, diff blown at 6,100 miles, this morning. At 5,500 miles, I lost my brakes all together, towed in master cylinder... the truck has a serious electrical issue, that no one can seam to figure out, the lights just blank out when ever for a second or two, and come back on.... the truck is a peace of crap, If I could, I would love to drive it right through the show room of the dealer I got it from! You would think that for 41 thousand dollars they would manufacture an automobile that would actually be good, and reliable... guess not. this vehicle will be going lemon law very soon!