Got a 2016 Escalade. Same problem with hood and roof. And with lining of doors pealing. Contacted local Cadillac dealer in south Florida, and best they would offer me was some $1800 “deal” that was only good for 30 days. Looks horrible. Spoke to my detailer and he wasn’t suprised, said it is common with black GMs. Now I notice it often on the road with black GMs, I stop drivers sometimes to ask them if they know what caused it or what to do about it and they are always as clueless as we all are.