One problem related to abs brake fail has been reported for the 1996 Ford F-350. The most recently reported issues are listed below.
Motorhome eldorado 29 1/2 ft. 12000 gvw, abs failure: pedal goes to within an inch of floor, can't pump brake, brake action seems inadequate in stopping on dry pavement or gravel, only rear wheels stop vehicle, not enough brake pressure during panic stop.