1997 Cadillac Catera Owner's Manual - Page 209

Pressing this button on the center console makes the front and rear turn signal lamps flash on and off. The indicator light on the button also flashes. Pressing the button again turns the flashers off. The flashers work regardless of the key position. When the hazard warning flashers are on, the turn signals won't work since they are already flashing. Your hazard warning flashers let you warnothers. They also let police know youhave a problem. Your front and rear turn signal lamps will flash on and off. 5-2