2002 GMC Sonoma Owner's Manual - Page 121

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. These lights will stay on for a short period of time and then will go out, if the DOME OVERRIDE button is in the out position. Dome Lamps The dome lamps will come on when you open any door. You can also turn the dome lamps on by turning the thumbwheel, located next to the exterior lamps control, all the way up to the second notch. In this position, the dome lamps will remain on whether a door is opened or closed. You can use the DOME OVERRIDE button, located below the exterior lamps control, to set the dome lamps to come on automatically when any door is opened, or to remain off. To turn the lamps off, press the button in. With the button in, the dome lamps will remain off when any door is opened. 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 any door. This will override the illuminated entry feature, unless you use your keyless entry transmitter (if equipped) to unlock the vehicle. Front Map Lamps (If Equipped) If your vehicle has front map lamps, they are located on the inside rearview mirror. They will automatically come on for approximately 40 seconds when the doors are unlocked with the keyless entry transmitter (if equipped) or until the ignition key is turned to RUN or ACCESSORY. The lamps will also stay on for approximately 40 seconds after you exit the vehicle, unless you lock the doors with the keyless entry transmitter. You can also turn the lamps on and off by pressing the switch near each lamp. 2-51