I went through this last year with my 99. It was eating up pads and driver's side caliper was sticking. Replaced calipers twice. They would bleed out fine so I couldn't figure it out out.......until ..... I realized caliper was bleeding out only when brake pedal was applied. The rubber brake hose that attaches to the caliper was check-valving, and not allowing the fluid to return when the pedal was released. It was holding the pressure causing the caliper to stick.
Caravan Fan....have owned 7 and praise their virtues, but woe their transnission flaws. I use a broken differential pin as a key chain if that's any sign. 2 1988 w/2.5l, 91 GC w/3.3, 94 GC AWD w/3.3, 2 1997's w/3.3 and 99 w/3.8