Chevrolet duramax V8 6.6 L Diesel Engine, 2018 US EPA Label, Requires Diesel Exhaust Fluid, Automatic Transmission, 5600 lb Front Axle, 9750 lb Rears, 13200 lb GVWR, 235/80R17, Spring Suspension, 163 in Wheelbase, 84 in Cab to Axle, 135 in Cab to End of Frame