I am also having this problem. I have a 2016 LTZ with only 35k miles. I take great care of it. The paint on the hood started fading around May this year (guesstimate) and I just noticed it starting on the roof. I have contacted a body shop and it will cost around $2000 to fix. I bought it at dealership in the Houston area, but have not contacted them. The dealership in this area has been horrible to deal with for other warranty work. I would be interested to see if anyone actually gets it fixed by Chevrolet.