GMC Chevrolet Tahoe 2003 Manual page 114

Lock-Out Switch
If you have power windows, the driver's door power
window switch has a lockout feature. The lockout switch
is located in front of the power window switches. This
feature prevents all windows from operating, except from
the driver's position, when the front driver's door button
labeled is engaged. To engage the lock-out feature press
the switch, and an indicator light will illuminate. To
disengage the feature, press the switch again and the
indicator light will go off. When the button is not engaged,
the passenger's power windows will operate.
Sun Visors
To block out glare, you can swing down the top and
bottom visors (if equipped). You can also swing
the bottom visor from side-to-side. Your visors may
have an extension that can be pulled out for additional
glare protection.
Lighted Visor Vanity Mirror
If equipped, pull the sun visor down and lift the mirror
cover to turn on the lamps. There is a slide switch
to adjust the brightness of the lamps.
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Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make it
impossible to steal. However, there are ways you
can help.
Content Theft-Deterrent
Your vehicle may be equipped with a content
theft-deterrent alarm system.
With this system, the
security light will flash as
you open the door (if your
ignition is off), to let you
know that you are
activating the system.