1975 Chevrolet C10 with System Mount Switch;. 1976 Chevrolet C10 Submodel: Cheyenne; Engine: 4.1L L6; EngineVIN: D; FuelSystem: 1BBL; with System Mount Switch;. 1976 Chevrolet C10 Submodel: Cheyenne; Engine: 4.8L L6; EngineVIN: T; FuelSystem: 1BBL; with System Mount Switch;.
