GMC Sierra 1979 Used Manual Gasoline GMC 79, base 454, has a 6-liter engine. One tank, the second one I haven't started. Externally painted, interior is original paint. The interior needs renovation. It has new tires. GMC hubcaps. The car is good, God willing. Chassis is guaranteed. Engine, gearbox, and differential are guaranteed. The car is fully loaded and converted to manual. The rest of its wiring is in the door, just needs electric door motors.