97 buick Park Ave - Heater only 1 side works at times?

  • Thread starter Thread starter D L
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D L

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I have a 97 Buick park ave. The heater on the driver side works, the passanger side is ice cold about 75% of the time. I dont see any type of pattern, in the sense of when it warm or when its cold. Any suggestions would be great. Thank you
 
most common problem is there is an eclectronic duct control under the dash behind the radio almost and which is an electronic duct opener for the heat vents. chances are that is not working properly.
thanks
 
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