Nice looking with a powerful engine that tows my bass boat with ease. Unfortunately, GM cut corners on the upscale extras in the Denali and it is obvious. The nav system is primitive and 1st generation. It uses a DVD which means you cannot play CD's while navigating. The nav DVD only finds 50% of the destinations so good luck. I reverted to the after-market Garmin nav system I used in my 2003 Envoy. The sound system is poor quality, the rear view mirror does not have the auto dim feature found in earlier Envoys and there isn't even a coat hook in the rear seat. GM saved nickels and dimes and raised the price by thousands. The older Envoys were a better buy, more comfortable and not gas hogs!
The engine is powerful.
Fix the nav and pay more attention to the customer's desires. I'll pay more but I expect to get more. I did in our other car and we love the Lexus.