1996 GMC Yukon Owner's Manual - Page 94

If you move the lever all the way up or down and the arrow flashes at twice the normal rate, a signal bulb may be burned out and other drivers may not see your turn signal. If a bulb is burned out, replace it to help avoid an accident. If the arrows don't go on at all when you signal aturn, check for burned-out bulbs and a blown fuse (see "Fuses" in the Index). Windshield Wipers You control the windshield wipers by turning the knob with the wiper symbol on it. Headlamp Highkow Beam Changer To change the headlamps from low beam to high or high to low, pull the turn signal lever all the way toward you. Then release it. When the high beams are on, this light on the instrument panel also will be on. For a single wiping cycle, turn the knob to MIST. Hold it there until the wipers start, then let go. The wipers will stop after one cycle. If you want more cycles, hold the knob o n MIST longer. You can set the wiper speed for a long or short delay between wipes. This can be very useful in light rain or snow. Turn the knob to choose the delay time. The closer to LOW, the shorter the delay. For steady wiping at low speed, turn the knob to the LOW position. For high-speed wiping, turn the knob further, to HIGH. To stop the wipers, move the knob to OFF. 2-30