This is really bugging me because I have seen a list of what is covered and not covered by the warranty and the injection pump is, my cam position sensor was not. If you go to the dodge web site and look up the cummins warranty it shows that 2003-4 trucks are covered for the VP-44. Do you still have your warranty book that came with your truck? It is spelled out in there, I have no idea where mine is, it's not in my truck. Unless there is another side of this story it most definantely should be covered by the warranty (5yr/100,000 mi). Find a different dealership, have you called the customer assistance line, they have a list of what is covered and what is not.