Changed Battery in my car and lost my stereo can anyone help?

I have a 98 chevrolet Cavalier and I cahnged my battery. After I hook it back up I go in the car and get ready to set the timer on my stereo and I get some thing saying "CODE". Now it says "INOP". So I read the manual and it tells me what to do. But I don't know the code to open it back up.

So I am wondering is there a master code to unlock it or a trick to get it back on? If so can someone help me?

You have to take it to a GM dealer... sucks..

Thanks I was really hopeing I didn't have to do that. They charge 50 dollars for the code alone.

I know, bunch of rip off artists...

Try this. Phil might be able to help you!!!!

http://www.j-bom.com/forum/forum_posts.asp?TID=816&PN=1

Good find!!