Just an idea, GM could come up with a low temp heating grid that would fit in the vent and only come on when the defrost id off. not hot but a lets say a 80 deg grid that worms the air leaking out the seal.
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2018 Yellow ZL1, Just bought.
2018 Hot Wheels 2SS #117, For Sale
2018 Hot Wheels 2LT Convertible. #506, Still Have
2018 Dodge Ram 3500 Cummins Long Horn, Still Have
2017 Challenger Hellcat
2008 Challenger SRT8
1970 Camaro RS/Z28, Still Have
1955 Willys CJ3B, Still Have
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