One problem related to axle hubs has been reported for the 2004 Dodge Ram 3500. The most recently reported issues are listed below.
1) my 1 ton 3500 Dodge truck just came out of park on its own after about 5 minutes and backed into the side of another car. I was sitting in the drivers seat using the phone and in park and it decided to go into reverse after about 5 minutes 2) the right front wheel bearing seized up from lack of grease at 52,200 miles. No damage or accident, it just sounded really bad and quit turning.