2001 Chevrolet Impala Owner's Manual - Page 123

If you pull the knob out halfway, it will turn on your parking lamps and your other operating lamps. If you pull the knob all the way out, your headlamps will then come on. Push the knob in all the way to turn off the lamps. A warning chime will sound if you open the driver's door when you turn the ignition switch to OFF with the lamps on. The DRL system will make your high-beam headlamps come on at a reduced brightness when the following conditions are met: D The ignition is on, D the headlamp switch is off and D the gearshift is not in PARK (P). When the DRL are on, only your high-beam headlamps, at a reduced level of brightness, will be on. The headlamps, taillamps, sidemarker and other lamps won't be on. Your instrument panel and cluster won't be lit up either. When it's dark enough outside, your high-beam headlamps will turn off and the headlamps and parking lamps will turn on. The other lamps that come on with your headlamps will also come on. When it's bright enough outside, your headlamps will go off and your DRL will come on. As with any vehicle, you should turn on the regular headlamp system when you need it. Daytime Running Lamps / Automatic Headlamp Control Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before sunset. Fully functional daytime running lights are required on all vehicles first sold in Canada. A light sensor on top of the instrument panel makes the DRL work, so be sure it isn't covered. 2-53