2011 Chevrolet Suburban 2500 Owner's Manual - Page 148

5-6 Instruments and Controls Rear Window Wiper/ Washer = (Rear Wiper Wash): { WARNING In freezing weather, do not use the 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 and lane‐change lever. To turn the rear wiper on, slide the lever to a wiper position. Press this button on the end of the lever to spray washer fluid on the rear window. The wipers will clear the rear window and either stop or return to your preset speed. For more washer cycles, press and hold the button. The rear window wiper/washer will not operate if the liftgate or liftglass is open or ajar. If the liftgate or liftglass is opened while the rear wiper is on, the wiper returns to the parked position and stops. Compass The vehicle may have a compass in the Driver Information Center (DIC). Compass Zone The zone is set to zone eight upon leaving the factory. Your dealer will set the correct zone for your location. Under certain circumstances, such as during a long-distance, cross-country trip or moving to a new state or province, it will be necessary to compensate for compass variance by resetting the zone through the DIC if the zone is not set correctly. Compass variance is the difference between the earth's magnetic north and true geographic north. If the compass is not set to the zone where you live, the compass may give false readings. The compass must be set to the variance zone in which the vehicle is traveling. 9 (Off): Turns the wiper off. 5 (Rear Wiper Delay): Turns on the rear wiper delay. Z (Rear Wiper): Turns on the rear wiper.