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Home >> Chevrolet >> 1981 >> Corvette Automatic Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Auto. A/C Systems - CHEVROLET COMFORTRON >> Components & Functions >> Engine Thermal Switch
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Engine Thermal Switch

Mounted on the right cylinder head, this switch delays initial operation of the Comfortron system in cool weather to allow engine coolant to warm up to approximately 120°F. This prevents a cold air blast from the heater.