2001 GMC Sierra 1500 Pickup Owner's Manual - Page 159

Accessory Power Outlets Sun Visors To block out glare, you can swing down the visors. You can also swing them out to help block glare at the front and side windows. The passenger's side sun visor may have a vanity mirror. Cellular Telephone (If Equipped) Your vehicle may be prewired for a cellular telephone. Please consult your GM dealer or a qualified service center for further information. OnStarR System (If Equipped) Two accessory power outlets are located near the cigarette lighter. Use these outlets to power mobile telephones or other devices designed to operate with vehicle electrical systems. The cigarette lighter is designed to fit only in the receptacle to the right of the accessory power outlets. Certain accessory power plugs may not be compatible to the accessory power outlets and could result in blown vehicle or adapter fuses. If you experience a problem, see your dealer for additional information on the accessory power outlets. OnStar is a vehicle communications system that offers a variety of services and provides a hands-free communication link between you and the OnStar Center. A service subscription agreement and fee are required in order to receive OnStar service. Services are available 24 hours a day, 7 days a week. For more information, call 1-888-ONSTAR-7 (1-888-667-8277). 2-76