2006 FORD F250 SD User Comment / Complaint

I was driving on the freeway at around 65 mph, and i hit a pothole. after hitting the pothole (rather small), the front end of the vehicle began to shake violently out of control and did not stop until i was able to pull over to the side of the freeway and stop the vehicle. this has happened a total of 3 times so far. it has occurred at 11,000; 14,000; and 17,000 miles. checked tire pressure and balance personally and everything was fine. called to ask dealership about problem, they said to make an appointment to bring it in, have not done so yet.