2001 GMC Sonoma Owner's Manual - Page 119

Interior Lamps Brightness Control Turn the thumbwheel next to the headlamp knob up to make your instrument panel lights brighter. Turn the thumbwheel all the way up to turn on the interior 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. 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. Illuminated Entry Your vehicle is equipped with an illuminated entry feature. When any door is opened, the dome lamps will come on if the DOME OVERRIDE button is in the "out" position. If your vehicle is equipped with Remote Keyless Entry and all the doors are closed, or the front door handles are lifted and released, the lamps will stay on for a short period of time and will 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 button is in the "out" position. 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. 2-48