GM Service Manual Online
For 1990-2009 cars only

The hazard warning flasher button is located to the right of the climate control system on the sedan. It is located in the center of the instrument panel on the hatchback.

Hazard Warning Flasher: Press the button to make the front and rear turn signal lamps flash on and off. This warns others that you are having trouble. Press the button again to turn the flashers off.

When the hazard warning flashers are on, the turn signals will not work.