I have a 1997 GT3000 that I installed an after market radio in. Worked great for several months and than it would not shut off when ignition was turned off. I would manually turn the radio off but the battery will die after two days of no use. If I use everyday no problem the drain is not enough to kill the battery. I don't know if the radio is the cause of the dead battery or that is a symptom of something else that is wrong. No other interior lights or electronics seem to be on??

 

you wired it wrong? Or the ign sensing circuit has gone gay.
Reset everything!

 

I removed the after markert radio and put the stock radio back in. Going to see if i still have he problem.