I recently disconnected the battery in my 07 Z06 to clean off the terminals. When I reconnected the battery I no longer had the competitive driving mode option. Traction control still turns on and off but I can no longer select this mode. It doesn't even show up on the dash anymore. At the same time the clock on my radio quit working as well. Any ideas or am I screwed ??

 

I would try disconnecting & reconnecting again, if that doesn't work hook up your scanner to see if it's working there