One problem related to brake master cylinder has been reported for the 2004 Dodge Ram 2500. The most recently reported issues are listed below.
: the contact stated while driving 55 mph on the highway, a hissing noise was heard from the steering column without warning. The vehicle was inspected by a dealer who determined the brake booster was leaking air through the steering column. Additionally, the dealer determined the master cylinder and brake booster needed to be replaced. The manufacturer was notified.