i have a 2000 grand am. The stock radio was taken out, and not replaced. The Tail lights and dash lights don't work. Put the radio back in and they still don't work.

check ur fuses

Check the #45 park/tail fuse under the hood and check the passenger side fuse box. It should be a 10a fuse at the top of the fuse box for the instrument cluster.

I have this same problem. It was the wiring behind the stereo. Now I have another problem my headlights won't turn off, or they do it takes a while after I turn key off. But my lights and running lights are on. Anyone got an answer for me