My 6 month old Silverado is also giving me the warnings as well, clean or not. Mainly, whenever it snows the slightest bit falls in front of me. I guess it doesn't want me to hit the flurries. I asked the service rep just now about it and he "never heard or this before me" seem like I am always the first one to complain about things. I tried turning the sensors off but they reset themselves every time I restart the truck.
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