2006 FORD F250 SD User Comment / Complaint

While driving down a fairly smooth highway at 55 mph. my 2006 ford f250 sd powerstroke started shaking, and the steering wheel starting moving back and forth rapidly. i thought it was a loose wheel or a flat, but it was not. i had to slow down to around 45 mph and it stopped. after doing some investigating on the internet i found that this is a very common thing for this model pick-up, and that nothing is being done to correct it by ford. this has happened to me twice now, and it is very scary. i hope that it does not have to take someone having a fatal accident for ford to do something about this.