It's so frustrating , I find the 2016 GMC Sierra Denali a beautiful truck and would love to buy one. But due to the vibration problems, I'm scared to make that decision. It must shipped to Europe, so I don't have any warranty from GMC, only from the dealer.
I live in Europe so not as close to the "fire" as you. I was planning to buy a new 2016 GMC Sierra Denali, but I think I'll wait for the 2017 ford Raptor. The Raptor probably will have massage Seats, so i can decide for myself if want vibrations.