Hi there! My truck has been getting a vibration in the front end when it is at speeds from 50-70, sometimes fairly violently, and while slowing down it gets worse. After coming to a stop and checking to see if I have a bad tire, I turned around in parking lot to get back on the highway, and it was compleatly gone. I got the tires rotated and a wheel alighnment. Then 4 days go by, and it is still does the same thing. I can pull off the highway into a parking lot, stop, back up, and turn around get back on hwy, and then it is gone. Just looking for some info to see what direction to take. Also while getting the rotation and alingment, I checked the bearings/hubs. I told the tech what my truck was doing, and he said ball joints and tie rods were fine. So I was thinking CV joints/shafs or stering linkage....Thoughts? Thank you in advance.