1996 Oldsmobile Achieva radio wont work after replacing the battery! How do i turn it back on?

I have a 1996 Oldsmobile Achieva. the radio worked when i bought it but when i had to replace the battery the radio no longer worked. they said i had to take it to a mechanic or dealership to have the security code taken off but would prefer to do it myself. they say its a safety feature. does anybody know how to do this without taking it to the shop? PLEASE HELP, IM DESPERATE FOR MY RADIO!!!!|||The radio will have to be removed from the dashboard





Then post the MAKE and MODEL plus ALL the LETTERS and NUMBERS on any labels , barcodes or stamped in the metal casing.





From this information , it may be possible to calculate your code.|||Hmm I would imagine it would be on the owners manual in the glove compartment or maybe on the back of the radio or maybe try googling it.