1998 GMC Savana Van Owner's Manual - Page 114

The DRL system will make your headlampscome on at a reduced brightness when: The ignition is on, The headlamp switch is off, 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. Your instrument panel won't belit up either. When it begins to get dark, your DRL indicator light is a reminder to turn your headlamp switch on. The other lamps that come on with your headlamps will also come on. When you turnoff the headlamp switch, the regular lamps will go off, and your headlamps will change to the reduced brightness ofDRL. Center High-Mounted Stoplamp To idle your vehicle withthe engine on and the DRL off, set the parking brake.The DRL will stay off until you release the parking brake. As with any vehicle, youshould turn on the regular headlamp system when you needit. Your vehicle's center high-mounted stoplamp is located above the rear doors at the center of the vehicle. If items are loaded onthe roof of the vehicle, as in a luggage carrier, care should be taken not to block or damage the center high-mounted stoplamp unit. If you tow a trailer that is equipped with provisions for a center high-mounted stoplamp, see your GM dealer for instructions on how to make it operate with your vehicle's electrical system. As with any electrical system modification, have the work performedby a qualified electrical service person. 2-42