Question about 1994 Buick LeSabre

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The heater fan will not shut off even when the key is out of the ignition switch in the off position

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  • Anonymous Mar 22, 2014

    won't shut off

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  • Buick Master
  • 443 Answers

The high speed relay is probably stuck and will have to be replaced. They are usually under the hood on or near the heater housing.

Posted on Apr 09, 2011

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Heater fan wont shut off when ignition is turned off.


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When I turn off my ignition, my heater fan will keep running


I just started experiencing the same problem. Yes, typically after rainy days, I can never get the interior lights to go out after the ignition key has been removed. The car acts as if there is a door open. Now, my latest problem is with the heater fan. Of course, putting the control in the "off" position will turn it off but you can turn it on and off with no ignition key installed. I'm also having problems with my heater core too so it's been a pain in the but!!

I believe this problem has also caused my battery to die which is why I'm on this site in the first place!! I can't get into the car with the keys and the dead battery won't allow me to unlock the car!! When it rains it pours!!!

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