yesterday I drove home with my new '16 GT350 avalanche grey, with 20 miles on it and I noticed I can't change to sport exhaust mode, i get a prompt that says "exhaust mode not avl" and a "driving mode not avl" pop up too...this AM all was good, however I have an airbag idiot light on. glitch?? i'm in phoenix so it;s hot here, maybe car was too hot and for safety reasons it didn;t want to go into "track mode"??