I usually just check the site out as a guest, but I see you're in Raleigh.
If you don't mind a ~1hr drive, contact Southern Pines Chevy in Southern Pines NC. They replaced the dash on my 2010 LTZ in 2015 and were really awesome to work with (I think it was a guy named Aaron, I don't live there anymore). I think the original quote for parts/labor was in the $900 range but they offered me a GM discount and the final price was around $350. Like others have mentioned before, the dealership admitted that they were aware of it (the service or parts manager's parents had a Yukon Denali with a cracked dash) and told me that it can't be recalled and fixed free of charge because it isn't necessarily a safety issue but it is certainly a service/performance issue. I got lucky, there were only 2 of the 'updated' dashes in black with the Bose speaker cutout in the US at the time. I'm not sure if inventory is still a problem, it sounded like GM started to remanufacturing the dash with a different blend of materials for dealers to use in replacements. It took a few days for them to pull it apart but they gave me a loaner car to use while they had my truck. It's under warranty as long as I have the truck, not a bad deal.