When my truck was brought to the first dealer they tested the fuel and fond that it contained additives. This is when they started telling me that I had to pay for a new pump or lose the warranty if had a remanufactured pump installed. The service manager made a huge point of showing me in the manual where it says "fuel additives are not recommended" they where real jerks about the hole deal needless to say they did not sell me my 03 and will never have my business again.