1997 Buick Riviera Owner's Manual - Page 203

located on top the of steering column to make your front and rear turn signal lamps flash on and off. The hazard light on the instrument panel will also come on. A Your hazard warning flashers work no matter is what position your key in, and even if the key isn't in. also.let police h o w - p u have a problem. Your fi-ont and reat. r signal lamps will flashon and df. To turn off the flashers, press down on the button again. are When the hazard warning flashers on, your turn signals won't work.