1995 GMC Yukon Owner's Manual - Page 161

Comfort Controlsand Audio Systems Section In this section you'll find out how to operate the comfort control systems and audio systems offered with your vehicle. Be sure to read about the particular system supplied with your vehicle. Comfort Controls Heater Conirols If your vehicle does not have air conditioning, your heater controls will look like this. The knob on the left side of the heating system control panel controls the fan speed. The knob has four speed positions. To increase the air flow, move the knob toward HI. To decrease the air flow, move it toward LO. To turn the fan off, move the knob to OFF. 3-1