Duramax V8 6.6 L Diesel Engine, 2006 US EPA Label, Air Conditioner, Automatic Transmission, 8000 lb Front Axle, 13500 lb Rears, 19500 lb GVWR, Steel, 245/70R19.5 Front Tires, 245/70R19.5 Rear Tires, Spring Suspension, 153 in Wheelbase, Tenco 9 ft Long x 2 ft 2 in High Steel Body, Pintle Hitch