NHTSA Complaint #11432003 — 2013 FORD F-350

while driving at highway speeds and hitting a slight bump or bridge joint the steering wheel started shaking so violently i had to abruptly come to a stop 4 times to avoid colliding with other traffic on our holiday trip. The steering damper has already been upgraded as well as tie rod ends, drag link and shocks. these trucks and this problem has to be addressed before one or more of us get killed by not being able to control it especially during high traffic times such as this past weekend. this weekend the problem was the worst of several incidents with this issue. Working for a Ford dealer the problem has been on going, despite making many repairs myself to save money on installation.