I realize this is an old post, but my 2015 Z06 3LZ trim is also having this issue. Contacted GM and after a few days of them looking into what could be done, they offered me a $100 voucher to use towards a future maintenance bill, lol. The quote from the dealer to replace the dash was $2468.84, plus tax and shop fees. My Z06 only has 9K miles and is always garaged. I'm not the original owner, but I know the previous owner I bought the car from kept it in a garage, and the car is spotless except for the dash. Seems like every time I drive it to work, and it sits out in the sun all day it gets worse, even though I do use a sunshade. I've seen several people get GM to pay much more than $100, any ideas or GM contacts that helped anyone on here that I can reach out to? My dash is gray, took pics in the garage which makes it look brownish, lol! Appreciate any info or contacts that I could reach out directly to if that's even possible!