1998 GMC Suburban Owner's Manual - Page 142

Transmitter Universal Sun Visors To block out glare, you can swing down the visors. You can alsoswing them outto help block glare at the front and side windows. Your visor may have a strap to hold small items, such as maps. Some visors have an extender on the inside edge. When the visor is down, pull the extender out for extra glare coverage at the front or side. Some visors have mirrors with lights. If the mirror has lights, they will come on when you lift themirror cover. I (If Equipped) 1 This transmitter allows you to consolidate the functions of up to three individual hand-held transmitters. It will operate garage doors and gates, or with the accessory package, other devices controlled by radio frequency such as home/office lighting and security systems. The transmitter will learn and transmit the frequencies of most current transmitters and is powered by your vehicle's battery and charging system. 2-64