One problem related to brake disc rotor has been reported for the 2004 Dodge Ram 2500. The most recently reported issues are listed below.
At around 20000 miles on my Ram 2500 the rotors warped, seems to be a common problem on Dodge ram trucks. Dealer said it was not covered after 12000 miles. Had rotors turned and they got worse. Bought new rotors(Dodge is the only place you can purchase these from at this time) so I am hoping for the best since they are the same type. Notified dealer were I purchased truck and they will not return calls.