Machine description: CAT 3126 6 Cylinder 7.2 L Diesel Engine, 2001 US EPA Label, Automatic Transmission, 8100 lb Front Axle, 15000 lb Rears, 26000 lb GVWR, 245/75R22.5, Spring Suspension, 161 in Wheelbase, Grumman Olson 1... more info about the 2001 GMC T6500.