[Traveler2017]

Like Javi said get a new mechanic and find a really good front end shop. I have owned nothing but Ram trucks and have experienced it only on a 2500 I had. Can definitely scare the you know what out of you. Despite what others say if you go to the many blogs and companies web sites it is not usually caused by tires unless they are way out of balance. Steering components where out and need to be checked regularly and replaced when needed.
My 2500 need a new steering box (rack and pinion) and the ball joints replaced. I have since learned to keep a close eye on things and have not had the problem rear its ugly head again.