One problem related to abs brake fail has been reported for the 1998 Dodge Ram 3500. The most recently reported issues are listed below.
Electric brakes on both axles of the fifth wheel, hydraulic brakes on my truck w/ abs on the rear duels--no abs on the front wheels--applied the brakes failed to slow down--manually applied the electric brakes--control head of the electric trailer brakes malfunction, no electric trailer brakes--the increased pressure on the foot brake locked up the front wheel leaving me skidding on the front tires w/ loss of control over steering--when the front wheels locked the rear duel abs failed to function and I skidded into the car in front at around two to three mph.