I have a 2015 GMC Sierra All Terrain. I bought it new and test drove it but did not notice any problems. Well, started driving highway miles and noticed the steering wheel vibrates at speeds over 60mph. Never in my dreams would I imagine a $40k plus truck would have any issues like this. I took it back to the dealer and rebalance the wheels. Didn't work. Went back a week later and they Road Forced Balanced the wheels. Well, I still notice the vibration in the steering wheel at speed above 65mph. Its not constant but noticeable. I will go back to the dealer again but not sure what more they can do. What recourse do I have? Whats next, new tires? I am starting to regret buying this truck. I had a 2014 F150 that I traded in for the GMC and it did not have any problems. Thought I was upgrading.