2005 Buick Lacrosse yesterday the fan was blowing both cool then you would turn to heat the heat would work the defrosters worked, today the fan is not working at all. Fuse or relay but without the owner’s manual I don’t know which one to pull does anyone know which fuse or relay it maybe, or do you even think it is a fuse or a relay when you turn the fan on it makes no washing sound it just makes no sound at all sounds completely dead. Any help would be appreciated guys
Here’s the wiring diagram for the blower circuit.
If the fuses check out to be fine, then turn the ignition switch on, set the blower speed to high, and with the handle of a screwdriver reach under the passenger side of the dash and rap on the blower motor.
If the blower starts working, replace the blower motor.
Thanks for the fast response, and diagram it will help