1995 GMC Yukon Owner's Manual - Page 122

When you turn the headlamp switch off, the regular lamps will go off, and your high-beam headlamps will change to the reduced brightness of DRL. To idle your vehicle with the DRL off, set the parking brake. The DRL will stay off until you release the parking brake. Dome Lamps The domelamps will come on when you open the doors. You can alsoturn the dome lamps on by rotating the thumb wheel, located next to the parkheadlamp 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 lamp switch button, located below the parkheadlamp switch knob, to set the dome lamps to come on automatically when the doors are open, or remain off. To turn the lampsoff, press the switch button once. With the switch buttonin this position, the dome lamps will remain when off the doors are open. To return the lamps to automatic operation, press the switch button againand return it to the "out" position. With the switch button this in open the doors. position, the dome lamps willcome on when' you Reading Lamps If your vehicle has reading lamps, press the button next to the lamp toturn the lamp on. The lamps canbe adjusted to point in the direction you want. Press the button again to turn the lamp off. If your vehicle has an overhead console with reading lamps, press the button next to the lamp to turn the lamp on. The lamps can be adjusted to point in the direction you want. Press the button again to turn the lamp off. 2-50