The guys that are managing fleets of vehicles are still complaining about parts availability from FCA. They tell me it is much easier and faster to get parts from the other two competitors. I think GM lost out of many sales due to not having anything beyond a Class 3 truck - Now that they are back in the game, they should get more fleet sales. With Ford now using the same transmissions and engines from the F250 through F750 allows a shop to minimize specialized parts inventory and have better training on the focused common platform.