GMC Sierra Denali 2006, Owner'S Manual, Page: 132 / 438

Dome Lamps
The dome lamps will come on when you open a door
and the dome override button is in the out position.
You can also turn the dome lamps on by turning the
instrument panel brightness thumbwheel, located next
to the exterior lamps control, all the way up. In this
position, the dome lamps will remain on whether
the doors are opened or closed.
Dome Lamp Override
E
(Dome Lamp Override): You can use the dome
override button, located below the exterior lamps control,
to set the dome lamps to come on automatically when
the doors are opened, or to remain off. To turn the lamps
off, press the button to the in position. With the button
in this position, the dome lamps will remain off when the
doors are open. To return the lamps to automatic
operation, press the button again and return the button
to the out position. With the button in this position,
the dome lamps will come on when you open a door.
Entry Lighting
Your vehicle is equipped with an illuminated entry
feature.
When a door is opened, the dome lamps and puddle
lamps will come on if the dome override button is in the
out position. If the dome override button is pressed
in, the lamps will not come on.
Exit Lighting
With exit lighting, the interior lamps will come on when
you remove the key from the ignition. The lamps will
not come on if the dome override button is pressed in.
Front Reading Lamps
Your vehicle has front reading lamps located in the
overhead console. Press the round button located next
to the lamp to turn the lamp on. The lamps can be
adjusted to point in the direction you want them to go.
Press the button again to turn the lamp off.
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