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Home >> Cadillac >> 1977 >> Seville >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Temperature Control >> Control System Components >> Heater Turn-On Switch >> Notes

Heater Turn-On Switch: Notes

A snap-action switch located in the front of the right-hand cylinder head to sense engine water temperature. Switch is closed above approximately 120°F and is open below that temperature to prevent heater turn-on.