My daughter has a 06 Chevy HHR. I noticed when I drove it the other morning to work that the window switch, radio buttons, and climate control lights
weren't working. When I lock and unlock the car I can see all the lights on the radio come on for a sec then turn off. All the other vehicle lights work perfectly.
Need help. Thanks

 

The interior lights are controlled by the light sensor, that little bubble on the top of the dash.

 

Welcome to the site, have the car battery checked, this can happen as the battery starts to lose its ability to stay charged!