Dome Lamps; Battery Run-Down Protection - GMC YUKON XL 2004 Owner's Manual

Your vehicle may also have reading lamps in other
locations. To turn the lamps on or off, press the button
located next to the lamp. The lamps are fixed and
cannot be adjusted.
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Dome Lamps

The dome lamps will come on when you open a door.
You can also turn the dome lamps on by turning
the thumbwheel, located next to the exterior lamps
control, all the way up. In this position, the dome lamps
will remain on whether a door is opened or closed.
E
: You can use the dome override button, located
below the exterior lamps control, to set the dome lamps
to come on automatically when a door is opened, or
to remain off. To turn the lamps off, press the button into
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 it to the out position. With
the button in this position, the dome lamps will come on
when you open a door.

Battery Run-Down Protection

This feature shuts off the dome,and reading lamps if they
are left on for more than 10 minutes when the ignition is
off. This will keep the battery from running down.