wont start on 2001 Chevrolet Impala

@@@@@@@@@@@@@HELP HELP @@@@@@@@@@@ I HAVE A 2001 IMPALA AND THE SERCITY SYSTEM IS GOT IT SO IT WILL NOT SIART AND YES I HAVE GOT A SCAN TOOL BUT ITS NOT GIVEING ME NO CODES SO PLEASE SOMEONE TELL ME WHAT TO DO THE RADIO IS SHOWING CAL ERR

2 answers 2 comments
don't know what you did to cause the theft system to shut down the ignition, but only the Vetronix Tech 2 scanner can get into the theft-security system and read/clear codes. Unless you can find a mobile mechanic with this scanner it may be time to tow it to the dealer. As for the radio, do a search on eBay/car electronics for radio codes. There's listings from places that will sell you the codes. Also, in the tools section there's listings to purchase a by-pass for GM pass-key systems, so you don't have this starting problem in the future.
thank you very much
You need a special machine to program your key to the car, the same machine will determined if you need any other components installed only a few shops do this maybe a big locksmith that deals with cars or the dealer for Chevy
thank you