2001 Cadillac Concours

2001 CADILLAC DEVILLE CONCOURS
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01CHRIS
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2001 Cadillac Concours

My cadillac deville dhs 2001. Heater only blows out hot heat when I set the temperture to 90 degrees or defrost..but as soon as I turn it to 83 degrees cold air comes out.I don't wuts wrong that..
Sep 1, 2010 at 4:22 PM
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FACTORYJACK
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Blowing heat when set to 90 is normal, it should still be warm at 83 considering what the inside temperature is. I would check for a possible thermostat that is stuck open not allowing full operating temperature to be reached. Try also pressing the AC Off button, and see if the temperature gets a little warmer. A moderately warm heater air can be cooled more with refrigerant flowing through the evaporator core, and when less than max heat is selected the blending with cool air will have a noticeable effect. This would suggest a possible thermostat stuck open or not regulating temperature properly.
Sep 8, 2010 at 10:33 PM