Do the 2018 models have the booming/buffeting/vibration issues?

[PG01]

you know if you roll down just a back window or back windows your going to get buffeting on virtually any car/truck, doing something like that is purposely making it happen, the fix for that is to just crack a front window on the adjacent side or both front windows. I think were trying to determine if this happens with all the windows closed.

Here doubie, factory manual......
From a dodge no less....

 

[Doubeleive]

Here doubie, factory manual......
From a dodge no less....
View attachment 206581

yep........

 

[b4z]

Our new RST has zero buffeting. During the test drive we made sure to take it to 80 mph and it was perfect. This past weekend , I took it up to 95mph once we hit 1k miles and it is fine and quieter than our caddy srx.

 

[b4z]

We did borrow a 2018 Yukon Denali for a long weekend and upon return to dealer, and not ready to buy, they filled it up and told up to keep for the week. We did later buy the truck new in Dec 2017 and have 8k miles to date. Very pleased, not vibs or buffeting, as I was concerned as well.
This is our 6th Gm big suv over the years and the most refined yet in many aspects. It also get impressive mileage over our 2007 and 2013 we had, and much quicker. Overall average 15-16 in town and 20-24 hwy, better is you slow down .

The mileage is impressive. We rented a ‘16 that would get 23 mpg at 78 mph. Out rst gets 22 at the same speed probably due to the heavy 22s.