Yeah, I know 8 people with new loaded tahoes 2014 and 2015. Everyone of them has sworn of gm from it. They will have to lose a ton of customers before they begin to change.
As for the wrench turners in the dealerships it is luck of the draw. I watched guys go from shop to shop here at the valley auto mall- largest collection of dealerships anywhere. Cadillac 1 moth, Chevy the next, Honda after that or maybe GMC... Some of the guys, the good ones, stayed put. But more money to be made in smaller shops where they can be more picky about a higher flat rate and what work they choose to do so the best of the best guys follow the money.