2002 GMC Envoy Owner's Manual - Page 119

Illuminated Entry Your vehicle is equipped with an illuminated entry feature. When a door is opened, the dome lamps will come on if the dome override button is in the "out" position. When all the doors are closed, the lamps will stay on for a short period of time and will then turn off automatically. If you use your keyless entry transmitter to unlock the vehicle, the interior lights will come on for a short time whether or not the dome override is on. Reading Lamps Exit Lighting With exit lighting, the interior lamps will come on when you remove the key from the ignition to help you see while exiting the vehicle. With the dome override button in the "out" position, these lights will stay on for a short period of time and then will go out. Press the lens on the lamp located above the doors to turn the reading lamps on and off. 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 knob, all the way up to the second notch. In this position, the dome lamps will remain on until they are turned off. 2-50