Ford only counts F-150 -F-550 in the F-series sales the 650 and 750 are counted as heavy duty ,so Ford’s F-150 -F-550 still outsell the Silverado 1500-3500 and Sierra 1500-3500 combined. F-series 451,138 GM twins 391,948 you would have to add in the Canyon and Colorado then GM would be ahead of the F-series by 27,533