1996 Oldsmobile Achieva not starting because of theft?

If your 1996 Oldsmobile Achieva isn't starting due to a theft system issue, it could be due to the factory-installed anti-theft system being triggered. Try using the key in the driver's door to unlock it and see if that resets the system. If that doesn't work, you may need to wait 10-15 minutes for the system to reset before attempting to start the car again. If the problem persists, consulting a professional mechanic or referring to the vehicle's manual for troubleshooting steps may be necessary.