My factory radio in my 2002 pontiac grand Am stop playing and it says LOC

You will need to leave the key on for at least 1 hour for the radio to reset, then you will see code displayed,you must then enter your code, this code should be on a card in the glovebox with the owner manualy.read the manualy on how to enter the code, if you cant find your code the dealer must be called and they will help you to get the code,they will have you hold buttons to get numbers then those numbers they transfer into the code. hope this is helpfulNOTE; you should be a battery charger so battery doesnt go dead within the hour of leaving the key on.