GMC 2008 Canyon - Manual (Page 138)

Hazard Warning Flashers
The hazard warning flashers let you warn the police
and others that you have a problem. The front and
rear turn signal lamps will flash on and off.
The hazard warning flasher
button is located on the
instrument panel, between
the two air vents in the
center.
The hazard warning flashers work no matter what
position the key is in, and even if the key is not in
the ignition.
Press the button to make the front and rear turn signal
lamps flash on and off. Press the button again to
turn the flashers off.
When the hazard warning flashers are on, the turn
signals will not work.
Other Warning Devices
If you carry reflective triangles, you can set one up at
the side of the road about 300 feet (100 m) behind your
vehicle.
Horn
To sound the horn, press the horn symbol on the
steering wheel pad.
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