i Have A 1999 chevy surb i had to change my battery an now radio is locked up i don't have the code to unlock it does any one have any sugestions

Time for a new cd player, j/k. I am sure someone on here can be more helpful then I was thoug.
-Later

call the dealer but there shoudle be a plastic card or something with the owners manual that has it on it.

Welcome to the board. Like the others have mentioned, if you don't hve any of the original paper work that has the code on it, try the dealer or one of the web based folks to get an unlock code. Most of those charge somehting for it though, not sure what the dealer charges are.
http://www.radio-code.com/?gclid=CLPFk7qE-4UCFSGSFQod0W4fvg