Reading Lamps; Battery Rundown Protection - GMC YUKON DENALI 2000 Manual

You can use the DOME OVERRIDE button, located
below the parking/headlamp knob, to set the dome
lamps to come on automatically when the doors are
opened, or remain off. To turn the lamps off, press the
button "in". Press the button again and return it to the
"out" position to set the dome lights to come on.
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Reading Lamps

The lamps can be adjusted to point in the direction
you want.

Battery Rundown Protection

This feature shuts off the dome, courtesy, vanity,
reading, glove box and underhood lamps if they are left
on for more than 20 minutes when the ignition is off.
This will keep your battery from running down.
Your vehicle has reading
lamps. Press the button
located next to the lamp to
turn the lamp on or off.