How to Reverse Anti-Theft on a Cavalier

Written by andrea walk
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Chevy Cavaliers, which were manufactured between 1982 and 2005, had an factory antitheft 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 antitheft alarm malfunctions and cannot be reversed, or shut down, it can cause quite a scene. If your Cavalier's antitheft device ever malfunctions and will not turn off, you can temporarily disable it until you can have the system examined by a technician.

Skill level:
Moderately Easy

Things you need

  • Socket set

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  1. 1

    Open the Cavalier's bonnet and prop it open.

  2. 2

    Use a socket set to remove the Cavalier's negative battery cable.

  3. 3

    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.

Tips and warnings

  • Some Cavaliers came equipped with passive antitheft systems (Passlock) that disables the fuel pump if the wrong key is used or if the ignition lock cylinder has been jimmied. If the engine stalls or the theft system warning light comes on during normal operation, stop the car, remove the key, reinsert it and restart the vehicle. If the light continues to come on, have it serviced by your Chevy dealer.

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