While traveling on the interstate between 50-70 mph the truck starts shaking violently and uncontrollably. Have to come to a stop to make it quit, which is extremley dangerous on the interstate. Ford won't recognize the problem and says there's no need for a recall. Googled it and there are alot of complaints and even a lawsuit against Ford in Sarasota Florida. I think they need to recall instead of waiting for someone to be killed.