Question about 2000 Oldsmobile Alero

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First the fan only would work on high, which I knew was the resistor, not a big deal, and never replaced the resistor. Then one day, the fan stops working completely. Is this the resistor or something else? any ideas? checked all fuses

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  • jschwartz403 Jan 13, 2009

    but if the resistor failed the fan would still work right? the fan would only work on high, which is the resistor. then it stopped working completely, so that probably means something else is broke too, right? not sure, confused

  • jschwartz403 Jan 14, 2009

    so for a 2000 alero, the resistor would control all speeds?

  • Anonymous Jan 21, 2009

    Yeah I am having the same problem with my 01 Alero.

    I was -40 and I turned my car on and a weird noise was coming from my fan. My fan basically started to stall out and now I have nothing. No heat and no fan. Kind of sucks when it's this cold and you have leather seats....numb nuts

  • Ansa113 Mar 21, 2009

    I have a 2000 alero, and the heater only works on high. I just changed the resistor and NOTHING changed. It STILL only works on high. Any ideas?? Please help, it's been going on for months!

  • inaheartbeat Apr 14, 2009

    I have a simular problem, the fan only works on high, and now the car has to get up to a certain temp before the fan will start and even the rear defrost will work.

  • Anonymous Mar 23, 2014

    Fan worked for about 5 seconds put voltage meter on shows plenty ok resistor jousts slide in and twist seems ok no idea now oh checked 40 amp fuse that's ok



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Did you say you replaced the resister or you did not? if you did not i would, but first i would run 12 volts strate from battery to heater motor and make sure motor runs if motor runs replace resister.

Posted on Jan 13, 2009

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The new vehicles with a 5 speed fan run all the speeds through the resistor and these are a very common failure. You should be able to buy one at any parts store.

Posted on Jan 13, 2009

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  • mikehumble Jan 14, 2009

    The new cars do not work like the old ones. On the old cars the blower resistor only controlled the lower speeds on the newer cars all the speeds are controlled by the resistor. The new style resistors are a circuit board that burns up.

  • mikehumble Jan 15, 2009


  • MARY Dec 28, 2010

    is it normal that it burns up. I replaced the resistor last year and it was burnt. Now it is burnt again and broken. I don't know if there is a reason that it is getting fried or if that is just normal burnout....



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