My first car was a 2000 Oldsmobile Alero. This this had so much rust underneath it. I owned it for like 5 months before the break lines blew out while i was driving. Drove it home at 5 mph and eventually sold it at auction.
I know my 2000 Oldsmobile Alero’s radio had theft lock. I replaced the head unit and I had no issues with the aftermarket head unit or my security system.