RepairPal Certified shops can diagnose and repair your 1999 Cadillac Eldorado. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
While the horn is blowing, go to your drivers side door and stick the key in to unlock the door. That always disables my honking alarm. This usually would happen when I would get my car jumped after it completely dying. Smh. Lol