unlock radio

I have a 2000 chevi blazer and my radio locked and i can't figure out the unlock code.Help!

You'll most likely have to make a trip to your local Chevy dealer and dish out the 50 bucks or whatever ridiculous amount they charge you. Do a search for other options also as this definitely isn't the first thread involving a locked GM vehicle radio. I remember that someone posted a 1-800 number or something a long while back that you could call. You have to remove the radio and get a number from the back of it (i'm told that's what the dealer does).