2003 sunfire radio display does not work, but radio does.Help?

Light is burned out in radio. You can replace the front face of the radio from a good one with a good light and put on your radio and the radio will light up and work in your car. If you replace the whole radio you will need to have the radio unlocked.
Remove your radio. Locate a used radio at a wrecker. Put your car is accessory key postion and plug in the radio at the wreckers. if it lights up it is good. Remove the bottom panel on both radios and unplug the 2 wiring plugs that come from the front face. they are side by side. Unclip the front face and plug back into your radio. Replug it in and snap the bottom back on your radio. Plug back in and it will now light up your radio.
The whole procedure should not take more than 15 minutes and all you need is a 7mm socket and a flat screw driver.

If you are more daring you can also buy a cheap am/ fm only radio with a light and replace th circuit board of the back of that one to the circuit board on your radio and use your own front face again. It willl light up and all your items will function regardless of whether the doner board had cd or not. Time on this is 3o minutes and you need a small wrench to remove the screws in the board.

Good luck. I replace about 10 on these each week so the wreckers in my locations no longer have many low end radios avalialbe either. This is the lowest cost way on fixing this issue.