Radio on "lock" after starter replaced on a chevy malibu. How to get my

[Banned]

radio working again? My starter was replaced this moring on a chevy malibu. Radio/Cd unit is stock, and was working BEFORE it was towed into the shop for the starter. I do not have the manuel for the car since I purchased this piece of crap used. So, maybe having a car payment wouldn't be so bad after all. Anyways, I'm stuck with this thing, how do I fix my radio unit? Thanks!
I miss my Ford Explorer!!

 

[Peter]

you will have to take to a dealer and they can reset it wth a scan tool