Not owning a C7 myself, I have read many threads over on CF pertaining to this very issue. You may have read them too. It seems to be a sporadic problem as some owners have not had any paint issues.
There is no reason that this should happen at all, none!!!
Hopefully you already contacted the dealer. I would also send pics to the GM rep for your area and Chevrolet customer service.
Get them all involved.
Good luck, hope it all works out good for you...
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