Cab fan , Heater / A/C blower motor . Is proper terminology . Doesn't work any speed , high , med. low etc... Test electrical circuit . Heater Blower Motor Troubleshooting
SOURCE: Heater/AC Fan does not work in our 1998 Buick Century
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.
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