1999 Chevrolet Tahoe Owner's Manual - Page 112

yellowblue Illuminated Entry Your vehicle is equipped with an illuminated entry feature. When the doors are opened, the dome lamps will come on if the dome lamp button is in the out position. When all doors are closed or the dome lamp button is pressed in, the lamps will stay on for a short period of time and will then go out. Dome Lamps The dome lamps will come on when you open the doors. You can also turn the dome lamps on by rotating the thumbwheel, located next to the parking and headlamps switch knob, all the way up to the second notch. In this position, the dome lamps will remain on whether the doors are opened or closed. You can use the DOME OVERRIDE button, located below the parking and 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 switch button once. With the switch button in this position, the dome lamps will remain off when the doors are open. To return the lamps to automatic operation, press the switch button again and return it to the "out" position. With the button in this position, the dome lamps will come on when you open the door. 2-42