1 0 1971 GMC C6000 S/A Truck Tractor At auction Oct. 1 1971 GMC C6000 S/A Truck Tractor. 40.589 Miles Showing. GM 427 Gasoline Engine. 5-Speed Manual Transmission W/2-Speed Axle. Heater. Radio. Air Brakes. 5th Wheel Plate. Receiver Hitch.... ConditionUsedStock NumberKN4106 MLS Number13826551CategoryDay Cab Semi Trucks Last Updated10/1/2025 LocationFranklin, NE, US Listed ByBigIron Auctions (844) 253-___ SHOWNUMBERCall Seller Email Seller Save More Info