mine vibrate on my 2500. But im use to it. My yukon does the same thing(stock mirrors). My driver side tow mirror seems to shift out some as well so i have to push it back in every once in a while. Heck if tomorrow isnt bad out and i can get to the mirrors easily i will try to swap them out to the yukon just for picture purposes. Granted they wont be color matched but it will give you a idea.