2007 Chevrolet Tahoe Owner's Manual - Page 210

The button is located in the switchbank under the climate controls. Rear Window Wiper/Washer {CAUTION: Push the heated washer fluid button to activate the heated windshield washer fluid system. The indicator light will flash. This activation will initiate four heated wash/wipe cycles. The first heated wash/wipe cycle may take up to 40 seconds to occur, depending on outside temperature. After the first wash/wipe cycle, it may take up to 20 seconds for each of the remaining cycles to begin. Press the button again to turn off the heated windshield washer fluid system or it will automatically turn off after four wipe cycles have been completed. When the heated windshield washer fluid system is activated under certain outside temperature conditions, steam may flow out of the washer nozzles for a short period of time before washer fluid is sprayed. This is a normal condition. In freezing weather, do not use your washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision. The rear wiper control is located on the turn signal/multifunction lever. To turn the rear wiper on, slide the lever to a wiper position. 9 (Off): To turn the wiper off, slide the lever to this setting. 5 (Rear Wiper Delay): To turn on the rear wiper delay, slide the lever to this setting. Z (Rear Wiper): To turn on the rear wiper, slide the lever to this setting. 210