1993 GMC Suburban Owner's Manual - Page 118

ear Window Wiper and Washer . . , . . . .. ... ... I K2171 Therearwindowwipedwasherswitch of the steering wheel. e To turnthewiperon,slidethelever is onyourinstrumentpanel, to the right. to thelever to theright. For delay wiping, slide the lever under BELAY to the center of the rear 'wiper control.Thewiper will cycleeverynineseconds. For steady wiper action, move the -slide lever all the way to the. right. ' ' Towashthewindow, push in dn the -end of the 'lever. Window washer fluid will continue to spray until the lever is released. Therearwindowwasherusesthesame fluid bottle as the windshield washer. If thefluidlevelislowinthewasherfluidbottle,youmay not be able to washyourrearwindow. If youcanwashyourwindshield,butnotyourrear window,checkthe fluidlevel. 2-54