I have the MP3/CD/XM radio in my 09 and I just picked up the car last week. The morning after,the radio would not come on.....no display..nothing. I work at the Chevy dealer I bought it at and they looked at it during the day and of course the radio was on when they brought it in.....So they didnt want to take too much apart and they said see how it goes. Friday night,the radio was not working ......again.....then it came on 40 minutes later. Saturday morning.....same thing.......this morning...same thing. Frustrating!! I need music when I drive...lol. They are going to look at it again today and start taking things apart.....wish me luck......

 

Did you check to see if the fuse is loose?

 

Does anything else make noise, like the door chime, or blinkers?

 

I heard that these radios have issues. It's fairly common.