GMC Sierra 1975 Used Manual Gasoline mileage: 21 KM In the name of God, the Most Gracious, the Most Merciful. GMC Sierra Double Tire 1975. Mileage: 21,000 kilometers. Engine size: 350 blue. From Civil Defense sales in the past. Repainted entirely in the past for the color. Registration not renewed and not inspected. For sale to the highest bidder. Please consider calling times.