2003 Chevrolet Blazer Owner's Manual - Page 143

Lamps On Reminder A reminder chime will sound when your headlamps or parking lamps are manually turned on, the driver's door is opened and your ignition is in OFF, LOCK or ACCESSORY. To turn the chime off, turn the control counterclockwise or turn the instrument panel brightness thumbwheel down to the fully dimmed position. In the automatic mode, the headlamps turn off once the ignition key is in OFF. The DRL system will make your hadlamps come on at reduced brightness when the following conditions are met: The ignition is on, the exterior lamp control is in OFF, the sensor detects daytime light, an automatic transmission is not in PARK (P), and the parking brake is released. When the DRL are on, only your headlamps will be on. The taillamps, sidemarker and other lamps won't be on. The instrument panel won't be lit up either. When it begins to get dark, the headlamps will automatically switch from DRL to the regular headlamps. The DRL system on some vehicles may turn off temporarily while the turn signals are activated. To idle an automatic transmission vehicle with the DRL off, put the transmission in PARK (P). To idle a manual transmission vehicle with the DRL off, set the parking brake. The DRL will stay off until you shift out of PARK (P) or release the parking brake. Daytime Running Lamps 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 lamps are required on all vehicles first sold in Canada. 3-14