1998 Chevrolet Blazer Owner's Manual - Page 160
1998 Chevrolet Blazer Manual
Page 160 highlights
Ventilation Tips Keep the hood and front air inlet free ice, snow or of any other obstruction (such leaves). The heater as and defroster will work better, reducing the far chance of fogging the inside of your windows. When you enter a vehicle in cold weather, move the fan controlto high for a few moments before driving off. This helps clear the intake ducts snow and of moisture, and reduces the chance of fogging the inside of your windows. Keep the air path under the front seats clear of objects. This helps air to circulate throughout your vehicle. You will find air outlets in center and on the sides the of your instrument panel. You can direct the airflow side-to-side rotating the by thumbwheel located in the center of the vent. vent The can be tilted up and down also.To control the amountof airflow through the outlets, rotate the thumbwheel below the vent. Defogging and Defrosting On cool, humid days, use BLEND to keep the windshield and side windows clear. Use DEFROST to remove fog ice from the or windshield quickly in extreme humid cold conditions. or Turn the temperature knob to the right and move the fan control toward high. 3-8