Passerger side under the dash...not too hard to change
Inside dashboard in path of air that blower motor blows.
Blower motor speed resistors are generally located close to the blower motor.
Passenger side, near firewall, inside vehicle.
the resistor is located in the blower module which is located under the hood by the a/c evaprator case
the blower motor is located on the passenger side of the interior under the glovebox.
If you have auto temp control, the blower motor power module has failed. It does the same job as a blower resistor. It is located behind the glove box.
On the passenger side, under the dash.
The blower motor relay on a 1980 Cadillac Coupe Deville is situated on the passenger side. It is located in the vicinity of the firewall and is just below the windshield.
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Open hood . Disconnect blower module located near blower fan. Disconnect, if blower shuts off, repalce module
A 1998 Cadillac Deville does not have a blower relay. The system has a fuse and a controller to feed power to the blower motor.
if its not blowing at all, your blower motor is bad. if its blowing but not cold, you probably just need a shot of coolant. tour blower motor is norm located under the dash on the passenger side, below the glove box.