Vortec V8 4.8 L Gasoline Engine, 2008 US EPA Label, 16614.3 Engine hrs, Automatic Transmission, 4600 lb Front Axle, 8600 lb Rears, 12300 lb GVWR, 225/75R16, Spring Suspension, 179 in Wheelbase, Supreme 16 ft x 96 in Wide x 78 in High Body, Walk-Up Ramp