1998 GMC Suburban Owner's Manual - Page 114

Rear Window Wiper and Washer The rear window wipedwasher switch is on your instrument panel, to the right of the gage cluster. The rear window washer uses the same fluid bottle as the front windshield washer. If the fluid level is low in the washer fluid bottle, you may not be able to wash your rear window. If you can wash your windshield, but not your rear window, check the fluid level. Windshield Washer I At the top of the lever, there's apaddle with the word PUSH on it. To spray washer fluid on the windshield, push the paddle. To turn the wiper on, slide the switch all the way up. For delay wiping, slide the switch even with DELAY in the center position of the rear wiper control. The wiper will cycle every nine seconds. To wash the window, push in on the switch. Window washer fluid will continue to spray until the switch is released. The wiper will continue with three more wipes and then return to the setting that was chosen before the lever was pushed. 2-36 r /r\ CAUTION: - In freezing weather, don't use your washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision.