I'm guessing you bought used ... not certified pre-owned. I'm saying this because I'm having the same problem with the rear bumper cover on my Cadillac ... STILL waiting to hear from GM nearly 3 months later. They're trying to say the bumper cover was replaced/repainted by the previous owner, even though the vehicle had only 7k miles on it when I purchased it. I purchased it from the dealer who originally sold the vehicle new, and they show no record of any accident damage to cause a repaint of the part in question. Moral of the story is ... they'll try to weasel out of paying for a factory flaw if even remotely possible! Here I expected a lot more in the world of customer service for a Cadillac, but I won't be making that mistake again. I'll still buy GM, but will spend less money for the same offering from GMC.