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Home >> Pontiac >> 2000 >> Bonneville V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> Heating, Ventilation and Air Conditioning >> Air Distribution System Description >> General Description

General Description

Air utilized by the HVAC system is drawn into the HVAC module through the air inlet assembly at the base of the windshield. The air is drawn through the air filter and routed to the blower. The blower forces the air through the evaporator core where it is dehumidified and cooled. The air is then heated as required by passing through or around the heater core. Now conditioned, the air is directed by mode door in the HVAC module to the outlets in the instrument panel, to the heater outlets at the floor, front and rear, or to the defroster outlets, depending upon the mode selected by the driver.

The air mix doors inside the HVAC module are controlled by electric actuators. The actuators that are used to control the airflow in and out of the HVAC module are as follows:
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