In the end, new wheels and tires fixed the issue completely. The issue I was having was a vibration at 68mph+ in the seats, floor, pedals, and center console. I had the truck in a total of three times, the first two times they just kept road forcing the wheels and tires I had, and couldn't figure it out. This last time, I got the impression that it just sat, and they got tired of it, so just told me to pick out a new set, before they exchanged the truck. I guess I should note that I never had a vibration at 40, and never was my vibration in the steering wheel. One of the rear wheels and tire on the chrome ones came up with a road force variation at 22 in the best case, and took 6.75 ounces of weight. That probably was the issue all along, but the service manager didn't want to replace a tire... Whatever ha.