Sun Visors; Accessory Power Outlets - GMC Sierra 2000 Owner's Manual

NOTICE:
Holding a cigarette lighter in with your hand
while it is heating can make it overload,
damaging the lighter and the heating element.
Just push the lighter all the way in and let go.
When it's done, it will pop back by itself.

Accessory Power Outlets

Two auxiliary power outlets are located near the
cigarette lighter. Use these outlets to power mobile
telephones or other devices designed to operate with
vehicle electrical systems.

Sun Visors

To block out glare, you can swing down the visors. You
can also swing them out to help block glare at the front
and side windows.
Some visors have an extender on the inside edge. When
the visor is down, pull the extender out for extra glare
coverage at the front or side.
Some visors have mirrors with lamps. If the mirror has
lamps, they will come on when you lift the mirror cover.
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