Machine description: V8 6.0 L Gasoline Engine, Automatic Transmission, 4800 lb Front Axle, 6200 lb Rears, 9900 lb GVWR, 265/70R17, Spring Suspension, 167 in Wheelbase, 8 ft 7 in x 77 in Bed, Hour Meter Reads CNV Closing T... more info about the 2011 GMC SIERRA 2500HD.