Changing a joint on the steering column will have no effect on the tracking whatsoever. I believe that it is also on a master spline so there shouldn't be a change in steering wheel position either. Steering wheel position can be adjusted via the drag link once alignment is confirmed as correct but tracking will also have no effect on the vibration which is caused by something else. Bear in mind most GCs tend to drift to the left slightly due to road camber, making the steering look out of line. There are plenty of others of others on the market, if it don't feel right walk away.