2016 Ford F350 powerstroke (29,947 miles), while traveling down smooth interstate pulling 5th wheel camper when speedometer gets to 61mph the steering wheel begins to vibrate. When speed is 62-63mph the entire truck begins to violently bounce causing near loss of control. The "wobble" was so severe while reducing speeds the truck was bouncing all over the highway lanes, fortunately tractor trailer drivers were alert and immediately slowed down which allowed us to regain control of the combination. Appears speeds less than 61mph the steering is better with less vibration. After dropping off the 5th wheel again we approached 60 mph with some vibration noted. When 62mph was reached again the steering violently began wobbling as it bounced the truck extremely hard on the pavement. It should be noted the highways used were in very good condition with no visible or noticeable defects.

- Manteno, IL, USA

October 8, 2018 at 3:45 pm heading North bound on us highway 55 at mile marker 191.8 towing a fifth wheel rv, hit rough pavement which caused uncontrollable oscillation of the steering wheel and violent shaking of the entire vehicle. You must slow the vehicle to under under 10 miles an hour to regain control. This same type of situation happen on August 4, 2018, which I returned the vehicle to the Ford dealer who stated they could not find anything wrong, because they could not duplicate the issue.

- Columbia, IL, USA

Uncontrollable steering after driving over expansion joints on the highways or rough roads or streets. Once you drive over these areas, the steering wheel begins to violently shake to the left then the right. The truck is shaking violently and makes it difficult to control the vehicle. You must slow down to almost a stop to stop the violent shaking and regain control of your truck. This has happen two times in a row and I went straight to the Ford dealer who replaced parts. On the second time this happen, I had to cut between the highway workers back blocking truck and the highway workers repairing the road because I could not control the vehicle at the highway speed. It has happen again and the truck is back in at the Ford dealer.

- Columbia, IL, USA

The contact owns a 2016 Ford F-350. While driving various speeds, the vehicle began to shake violently without warning. The failure recurred randomly. The vehicle was taken to the local dealer (mclean Ford of fredericksburg, 1279 us-87, fredrickburg, tx 78624), but the cause of the failure could not be determined. The vehicle was also taken to an independent mechanic where it was diagnosed that the steering damper failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and did not assist. The failure mileage was approximately 14,000.

- Mason, TX, USA

The contact owns a 2016 Ford F-350. While traveling 55 mph, the steering wheel began to vibrate. Initially, the contact thought there was a flat tire. After pulling the vehicle over to the shoulder of the highway, the contact observed the vehicle and did not see a flat tire. The contact proceeded to drive on the interstate at 50 mph and the vibration recurred for 40 seconds. There were no warning indicators illuminated. It was unknown if the dealer or manufacturer were contacted. The failure mileage was 27,000.

- Johnstown, NY, USA

Vehicle bounces very dangerously causing vehicle to swerve into other lane. Pot holes shake vehicle into other lanes. Brakes do not hold well during shaking. Myself inside shake very heavily as well feeling like a bobble head. Steering becomes very difficult while shaking. It is so bad speaking is difficult during the shake. This happens at any speed above 55mph. This occurs most on highways but also on city streets.

- Tujunga, CA, USA