How do you reset 2000 Cadillac Seville SLS Anti-Theft System?

To reset the anti-theft system on a 2000 Cadillac Seville SLS, first ensure that the vehicle is in the "Run" position without starting the engine. Then, use the key fob to lock and unlock the doors, or insert the key into the driver's door lock and turn it to lock and then unlock the door. This process should reset the anti-theft system. If the issue persists, refer to the owner’s manual or consult a professional for further assistance.