1995 Chevrolet Blazer Owner's Manual - Page 136

The upper knob changes the air temperature. Turn the knob clockwise for warmer air. Turn the knob counterclockwisefor cooler air. The lower knob selects the heater air conditioning function and or determines which outlets the air will flow through (instrument panel, defroster, heater, etc .). OFF - This setting turnsoff all heating functions.Some outside air will still come out of the heater outlet whenever the vehicle is moving forward. MAX A/C - Air inside your vehicle is recirculated maximize yourair to conditioner's performance and your vehicle's fuel economy. setting This cools the air the fastest and should be used to "unwanted odors" and/or keep dust from entering the vehicle. NORM A/C - This setting cools outside air and directs it through the instrument panel vents. This setting is usefulfor normal cooling on hot days. BI-LEV A/C - Air is delivered through heater floor vents as well as the the instrument panel vents.This setting is useful in cool weather with bright sunlight. Set VENT - Airflow is through the instrument panel vents. the upperknob to thetemperature desired. This setting is useful for mild outside temperatures, when little heating or cooling is desired. air conditioner The does notrun. HEAT - Heated aircomes out throughthe heater floor vents and windshield defroster vents. This setting is useful cold weather. for BLEND - Airflow is divided equally between the heater floor vent the and windshield defroster vents. This setting is useful in cool weather when you have fog or ice on the windshield or side windows. DEF - This setting directs most through the windshield defroster vents air and some through the heater vents. This setting is useful when you have fog or ice on the windshield. Engine Coolant Heater (Option) If you use the optional engine coolant heater before starting your engine, your heating system will produce warmer airfaster, to heat the passenger compartment in cold weather.See "Engine Coolant Heater" in the Index. 3-2