Question about 1998 Buick Century

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Heater/AC Fan does not work in our 1998 Buick Century

The heater/ac fan does not work in our 1998 Buick Century how do we access it, and trouble shoot it

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  • Anonymous Jan 03, 2009

    I have the same prob. The fan squeeled for a while, then the two low speeds eventually stopped working. Then squealing got more consistent and louder. Finally on a very cold day everything stopped working.

  • Anonymous Mar 30, 2009

    Heater/AC fan works for a second makes a horrible noise and stops working but continues to make the horrible sound unti you turn it off

  • Rhonda Bartlett Sep 20, 2013

    No noises associated with this problem. It would simply work, then the next time the car was started it would not work. Now it isn't working ever.

  • Anonymous Mar 16, 2014

    replacement of door hinge pins. Drivers door.

  • Anonymous Mar 16, 2014

    left rear excess wheelspeed

  • Anonymous Mar 25, 2014

    i have a buick century 1998 and i have 2 problems 1- cd player only works for 30 secs and i hear a noise and it goes off . 2- on the heating /ac command unit i see no infos i am operating my heater / ac blindly by trying adjusting it as i can ... thank you for helping



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Fan will be under dash on passengers side , Removing glove box might be needed, Gm also uses a blower resister ro control fan speeds. First check your fuse and then check and make sure your getting 12 volts to the terminal at the blower, You could have a blown fuse, a bad switch, or a bad resister , if your getting voltage to blower motor then most likely it will be the motor. These are not to difficult to change. I hope this helps, please be aware I can only guess at what the problem is from my past experience.

Posted on Dec 18, 2008


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They are located behind the right front headlights (passenger side). There is a bank of four relays mounted on a common holder. The four are for various purposes, one of which is to control the ac fan on the low settings. I got a bank of four used relays from and olds off of ebay. I plugged in the part number off the one I had into the search box to find it.

If a relay is bad, it will usually rattle.

Good luck!

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