Chevy Cavaliers, which were manufactured between 1982 and 2005, had an factory anti-theft device option. The feature, which was motion-sensitive and controlled by the key fob, was aimed at deterring would-be car thieves. However, when a anti-theft alarm malfunctions and cannot be reversed, or shut down, it can cause quite a scene. If your Cavalier's anti-theft device ever malfunctions and will not turn off, you can temporarily disable it until you can have the system examined by a technician.
Open the Cavalier's hood and prop it open.
Use a socket set to remove the Cavalier's negative battery cable.
Keep the cable off the battery post for 30 seconds to a minute, then slip it back over the post, tighten it and restart the Cavalier.
