One problem related to manifold/header/muffler/tail pipe has been reported for the 2004 Dodge Ram 1500. The most recently reported issues are listed below.
Driving on highway started to hear tapping noise coming from front passenger side exhaust manifold found two broken exaust manifold bolts that were making this tapping noise. My truck only has 90,ooo + miles on it has never been off road I'm the original owner on this truck has never been abused ever, and know this happens please look into this exhaust leaking problem. Why would this happen,I've never experienced this kind of problem before, me and my wife are really concerned about exhaust fumes know driving around town what should we do. A mechanic is trying to charge me over $500. 00 for this fix and no guarantee that new bolts are not going to break again.