Until now it seems that the Black H3 has the problem. My dealer identified 2 others but I don't remember if they were black as well.
To fix it they polished all the fiberglass parts after they let it dry for some days. It was quite a lot of work and my left front fender still has some spots but you can only see it during when the light reflects a certain way. The issues has been communicated to GM, maybe your dealer can do this as well so we get some more traction.
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2006 Hummer H3 Adventure, Black with Cashmere Interior, PIAA Horns, SMA Heavy Duty Brush Guard, FlowMaster 50 Series Delta Flow Exhaust
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