Question about 1983 Cadillac DeVille

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Mild heat from floor when temperature is set at 90 degrees

My 1991 Sedan Deville for years has only given mild heat when the temperature is set at 90.Sounds like the heater core.Is this a big/expensive job best done at the dealer or an ASE gas station repair shop? What should I expect to pay for repair?

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Hi Paul,
I doubt it is the heater core although it could be, I bet if you replace the thermostat it will allow the coolant to get at little hotter and the heater will be warmer.
Let me know if this helps and please rate this solution. Lone99star

Posted on Jan 22, 2009


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