GMC 1995 Suburban Owner's Manual page 240

L
Push the button at the
top of the steering
column all the way
down to make your
front and rear turn
signals flash on and
off.
Your
hazard warning flashers work no matter what position your key is in,
and even if the key isn't in.
To turn off the flashers, push the button until the first click and release.
When the hazard warning flashers are on, your turn signals won't 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.
Jump Starting
If your battery (or batteries) has run down, you may want to use another
vehicle and some jumper cables to start your vehicle. But please follow the
steps below to do it safely.
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