Ball Joint problems of the 2009 Ford F-350

Hit road bump & the 'death wobble' occurred causing the truck to shake uncontrollably & force us to the side of the road. I took it to Ford dealership & they quoted me over $7k to fix virtually everything suspension related. I took it 2 local diesel mechanics who eventually fixed it after replacing apx $700 in parts. The part that fixed it was the track bar ball joint & track bar bushing. In searching online amongst Ford enthusiast as well as other diesel truck owners. . . . This is a scary, dangerous & somewhat common problem. Fords response in a lot of instances is that tire pressure, tire wear, etc. . . Is their comon response. All I know is with as many guys that I've seen had this, this is a design flaw that is dangerous. If someone hasn't been killed because of this already, I'd be shocked.

I am the original owner of a 2009 Ford f350 srw diesel crew cab. At approximately 70,000 miles I began to experience a strong front end vibration; death wobble. When I go over uneven roads at speeds above 55 mph. The vibration is so great that the steering wheel requires a tight hold to keep control of the truck. The vibration continues until I slow down to around 40 mph. This becomes even scarier when I am on a freeway fly over that turns and I hit an expansion joint. The truck shakes and tries to push away from the turn. I took my truck to the dealer on four occasions. The first visit they said they could not duplicate the problem and that I needed new tires. I bought new tires and it did not correct the problem. I took it back the second time and they changed out the ball joints, tie rods, steering damper, did a front end alignment and balanced my wheels. It seemed to work for a short time until a part fell off the front end of my truck and hit another one behind me in the car pool lane. I took it back to the dealer to find out what I lost. I was told a part fell off but they did not work near it. Funny thing, it began to vibrate again after that. I recently took it back and talked to the technician before I left the truck so he would understand what it was doing. He took it for a drive but did not get it to vibrate as I reported to him. He told me that my truck drives just like all f350's without a load. I have put my slide in camper in the bed of my truck, 3,500 lbs. And it still vibrates violently. I think that would be considered a load and it truly feels like a death wobble as described by many internet postings. The Ford rep I spoke to said they are not aware of any problems. I am in the process of filing a formal complaint with Ford.