I found this on the net. Surprising to say the least. Sorry I don't have the link. I am not sure what this means to medium duty GM owners. I guess IH will take over building the truck and I hope that they don't monkey with it too much. I like my 5500. There is room for improvement but if I wanted an IH I would have bought one. I actually looked into an IH they were 20K more money for an equivalent truck.