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I am not sure what causes the climate control to go blank.... however you can manually open the door that allows heat to come in contact with the blower.....remove glove box.... easily done.... (screw inside glove box).... now you have access to heater assembly... there is a white arem visible with a metal link connected to it... pull the metal link off...then grab the white arm and push it over to the right completely...this will open the heater core door. allowing that heat to come in contact with blower...now your blower heat should be hot now! :)

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Q: Climate control on 1993 sedan deville goes blank blower motor stays on no heat what could be causing this.?
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