Can't Get Unlock Code For Radio

I Bought A Factory Radio/cd Player On Ebay. I Put In A Pontiac Grand Am 2004. Its A Monsoon --just Like The One I Took Out. It Is Locked- I Tried Pressing Buttons 2&3--nothing Happens. I Tried Buttons 1&4 -- Nothing Happens. Both For Way Over 10 Seconds. What Can I Do To Get It Unlocked Besides Taking To The Dealer?

I think your only option at this time is the dealer. I used to own a pontiac sunfire and their radios are coded for theft reasons so once you unplug it or install a new one, you will have to get the code from the dealer. Either that or just put an aftermarket radio in it. Good luck.