My 3LT,2014 C7 started to have some separation on the leather.  Who could blame it after sitting in the sunlight thru the windshield.  I purchased a a dash cover from "DASH CARE" in Anaheim.  I think it fits great and looks good.  I had some issues with fit and edge binding.  After an exchange I have a good fitting cover, that should solve the sun baking problem.  They were not great to work with on the exchange. Be careful to pick an edge binding that is not bulky.

Steve