general problems of the 2006 Chevrolet 2500

When coming to a stop, at speeds of less than 5mph, the brake pedal goes to the floor as if the abs is activating. This happens on smooth dry pavement. Taken to several mechanics and dealers and everyone says everything is working the way it should. I've heard of other owners of this make/model experiencing the same problems. Whenever I let someone else drive my truck, I make sure I stress that it will not stop when it should, so far no wrecks. Andrew aquilano.