How do you disable alarm system on 1997 Catera?

To disable the alarm system on a 1997 Cadillac Catera, insert the key into the driver's side door lock and turn it to the right. This should unlock the door and deactivate the alarm. If that doesn't work, try starting the vehicle with the key, as doing so can also reset the alarm system. If issues persist, consulting the owner's manual or a professional may be necessary.