Last year I traded my ZO6 for a slightly used 2017 Tahoe Premier. All I can say a year later is that it was a great move. The two Vettes I had were fun for the 16 years I owned them but in Canada were a Vette is about a 5 months of the year driver it did not make sense anymore.
My wife and I went to Mesa, Az. this winter with the Tahoe and loved it. Great highway cruiser. And believe it or not the best mileage of all the trucks I have driven to AZ. Averaged over the whole trip, about 20mpg.