OMG, I was about to buy a 2015 Yukon LT w/ 10k miles on it until I came across this thread! Drove it today, loved it. My stomach dropped reading this thread and thinking I could be in your situation of a defective truck with no manufacturer support. This is absolutely pathetic by GM to continue to sell a defective vehicle, and not take care of existing owners. I would be livid if my kids had headaches and GM did nothing about it.
I feel for you all. I hope somebody at GM gets some sense to take care of this. Thank you for posting this to prevent this from happening to me. We've driven BMW and Mercedes for the past 12 years (our last Grand Cherokee was junk). Thought maybe it was time to try American, guess not. I'm bummed since this looked to be such a great truck for the money.
Back to the MB and Infiniti dealer to take another look at their SUV's.
Come on GM, you people are better than this. Geez.