I have to say, having been in the same boat with my 2016 that I bought new and had NO idea about what the issue was until it was too late, it's good you got out. I thought my issue (before I googled it and found this forum) was a bent rim. In fact, I thought because I bought a set of 20" Foose rims used, that it was the issue and ordered a new Foose rim and the whole set was bad. Discount tire told me at the time that was the issue. I then bought a factory set of 22" Black rims and still had the issue. It was then I found this forum and it had passed the time I could do anything about it and after $2k in tires and wheels traded in and got my new 2019. I have NO issue of any kind on my 2019 and although I loved my 2016 (and still miss it), the 2019 has proven to be the right choice. If you're still considering Chevy, the 2019 has kept me happy. Although, I am a Chevy man, this whole thing has left a bad taste in my mouth that Chevy isn't stepping up. Good luck, very happy that I at least found out it was my the Shake issue but sad about the cost incurred to get there.