I was at my Chevy dealer today. They had at least a dozen 2016's on the lot. I spoke with one of the sales people and asked a numbered of questions about suspension, engine, tranny, tow packages, etc and I was told that the 1500 2016 changes are all just cosmetic. Even the 6 speed is still standard. I did drive a New 2016 HD CC 4x4 which was an awesome ride, no vibes at all. If only it wasn't $60k. I also drove a 2015 DC z71 and it also drove nice, well past 80mph and it was pretty smooth. It didn't have the petal vibe/buzz that my 2014 has.