New guy here and first post. Found this place while doing a search about the vibration I'm getting in my 2016 Sierra that I've had for a month now. Started at around 400 miles and now I'm at 2300 miles. I really feel it in my steering wheel and it's almost constantly while vehicle is moving. Going in tomorrow morning to dealership. Didn't read this entire thread but quite a bit. Has anyone measured their wheelbase driver side compared to the passenger? Mine is 3/8th of an inch longer on passenger side. This is a new one to me. Sorry if this has been discussed but searching has not given me anything. I'm coming out of a 12 year stretch with an 05 Ram 2500 4x4 with a Cummins. That truck was loud but I never had an issue like this. Love everything about the Sierra except for the vibration which actually makes my hand numb after 30 miles or so