I had a 19 denali, some of the same issues as you, lots of other ones, lemon laws were not applicable because the issues were random and different, just lots of problems. I traded it in for close to what we paid and am driving a car right now. I'm waiting to see how the new tundra turns out, if I don't like that I will check back and see if they fix all these problems. GM was not really helpful, but thankfully truck values are very high right now so you csn probably sell it without much of a loss. Sent from my SM-N986U1 using Tapatalk