Machine description: 8GF1XS V8 6.6 L Diesel 300 hp Engine, 2004 US EPA Label, Requires Diesel Exhaust Fluid, Allison Automatic Transmission, 7000 lb Front Axle, 13500 lb Rears, 17500 lb GVWR, 245/70R19.5, Spring Suspensio... more info about the 2004 GMC C4500.