I too will take this all the way, whether BBB, lemon law, or law suit. I'm so sick of paying this much money for a High Country and got the "its your problem now" treatment. If I don't get anywhere I will sell it because it is not drivable. This needs to get out. I will stay posted with results.
It had 10 miles on it when I left the dealer. It now has 6500. Unfortunately I should have test drove it more than around the block on the dealers prescribed route.
I have a new 2017 High Country 6.2 8 speed with the hesitation/surge. Most annoying vehicle I've ever driven. Completely unexceptable. The dealer says its normal and chevy won't help. Selling the truck and will never own another.