I had taken my stock radio out but have now put it back in, but now it lights up and says playing but no music will come through speakers, someone told me it might neeed to be reset with a code or something. Its a 2004 gt and now im just out of ideas cause its hooked up correctly, does anyone know if there is a code and what it is or where i can find it, i posted this in audio section but i was hoping more people would see it here and help me out. Thank you.