Picked up a 2008 LT this weekend in Houston and it was a great trip back to Lubbock, TX. Good to be back with one again. Question: Last evening took my wife out for a cruise and on the instrument cluster there was an orange light next to the center "stack" that said CLOCK MODE. Searched thru the owners manual when we got home and there was a picture of it with no reference to its purpose. What is it trying to tell me and what should I be aware of? Thanks for your time.