Sorry to say, you must go to the dealer on this one unless you get lucky
entering the number sequence.
If I remember correctly, you should be able to do some button sequence which
will display a number that if given to Saturn will yield an unlock code.

Google gives these options:
http://www.google.com/search?source=...n+radio+unlock



"stonecreek" > wrote in message
...
>I have a 2000 SL2 that I bought used. I recently had to do some work which
>required disconnecting the battery. Apparently, there is some sort of
>anti-theft stuff that requires entering a code to get the radio to work.
>All the radio says is LOCK. The manual says to go to the dealer. There
>has to be another way.
>
> Any ideas?
>
> thanks
>