Please help!!!

Hey guys so I have a 2008 Chevy cobalt sport with a 2 L engine. Recently my dash lights go really dim and then get really bright again and continue to do this. Also the spot that tells me the mileage and how much fuel is in my car starts to pulsate. And I would lose all the lights on the buttons on my stereo. I haven't seen any other issues with other lights or my headlights or taillights. The strange thing is is when I turn off my car all of the lights turn back on. I have no idea what could be causing this and would appreciate some insight.

Does this happen at night? If not, try turning off the headlights. If the display stays bright, then it's probably related to the light sensor on the dash board in front of the instrument panel.