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"??
More likely, the valve on the mufflers was stuck. It cycles when you start the vehicle and if it does not cycle, the modes are not available. I had an air bag light due to a broken connector under the pass seat.
The only time you should see "Driving mode not available" as a normal condition is if you are in reverse gear.
You may need to have the dealer reset the exhaust valves or check them for a sticking condition.
Once I added long tube headers and high flow cats I not only lost exhaust modes but I lost the driving modes. In my case it didn’t start until I added th whipple and ford and whipple can’t figure it out after 2 tuners. Anyone else having the problem? Also high oil temps despite the oil cooler