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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1429 (HVAC Systems - Automatic) >> Description and Operation >> Air Temperature Description and Operation >> Automatic Auxiliary HVAC System >> Auxiliary Inside Air Temperature Sensor

Auxiliary Inside Air Temperature Sensor

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The auxiliary inside air temperature sensor is an infrared sensor. This component is integral to the rear auxiliary HVAC control module. There is a lens on the front face plate of the rear auxiliary HVAC control module to cover the sensor. If the sensor lens is covered, the sensor can not make a proper indication of heat. The sensor does not set a DTC. The sensor helps in making the proper automatic calculations to position the auxiliary mode and temperature doors.