Machine description: CAT 6 Cylinder Diesel Engine, 6-Speed Manual Transmission, 9000 lb Front Axle, 19000 lb Rears, 28000 lb GVWR, 11R22.5, Spring Suspension, 194 in Wheelbase, PTO, 125 in Cab to Axle, 164 in Cab to End o... more info about the 1994 GMC 7000.