wow a company who claimed bankruptcy and is no longer responsible for vehicles produced by the "old GM" is stepping up to vehicles with less than 100k and fixing them. Sounds like the "new GM" is a great company. Too bad your vehicle falls outside their customer satisfaction assistance. Gota draw the line some where. I believe the warranty on most of the earlier vehicles was 3 yr 36k bumper to bumper, your vehicle is more than 3 X that. Time to buy a new car, no vehicle has perpetual warranty.
Gm wouldn't replace ours at a little over 5 years 50,000 miles.