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Home >> Chevrolet >> 2004 >> Express 2500 AWD V8-5.3L VIN T >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Description and Operation
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Control Assembly: Description and Operation

HVAC CONTROL ASSEMBLY




The HVAC control assembly is a non-class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The ignition 3 voltage circuit provides power to the control assembly. Two integrated potentiometers control air temperature door position and blower motor speed. The integrated vacuum system controls the mode door position. The control assembly supports the features as in the table.