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Home >> GMC >> 2001 >> Safari Van 2WD V6-4.3L VIN W >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> HVAC System - Manual Control >> Air Delivery >> Air Speed - Auxiliary Control >> Auxiliary Medium Blower Speed

Auxiliary Medium Blower Speed

When the Med blower speed is selected, the heater auxiliary and/or A/C auxiliary blower motor switch applies voltage to the heater auxiliary and/or A/C auxiliary blower motor resistor through the auxiliary blower motor medium speed control circuit. Voltage is divided between a series resistor and the auxiliary blower motor to achieve the desired blower speed. The auxiliary blower motor is included in the series circuit by the auxiliary blower motor supply voltage and ground circuits.