i step on brakes to come to a stop. and the brake pedal resists. and feels like truck dont want to stop. so i force it down and it agreesively stops . dont do it when i am slowing drown only when coming to a stop (i.e. stop lights, parking, etc. what is it where is it to be fixed and what does this job all intales was told absspeed sensor. was told there are only one and then told there are three.