If your standing in front of the car looking at the engine there is a fuse box on the fire wall on the passenger side and the relay is in that below the fuses when you remove cover. The blower motor resistor/power module is under that fuse box on the left hand side of it near the silver A/C tank.
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.
There is none - usually it is the module in the top of the heater / blower box (resistor module) that is the problem.
1991-1993 DeVille blower control module (power module) location If you are standing in front of the car with the hood open, look left of center on the firewall for a cover that says "Maxi Fuse / Relay Center" remove this cover (two 1/4 turn fasteners on the front and one sheet metal wingnut on the top near the hood hinge). Underneath the fuse and relay center, you should be able to see the blower control module (power module) bolted to the top of the evaporator / blower module. Wires to the connector are color coded; Black, Purple, white and red. Cadillac Man
the blower motor is located on the passenger side of the interior under the glovebox.
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.
What model? This probably has electronic Climate control,therefore there isn't a Blower resistor. The blower is controlled by a Blower Motor Module...its mounted on the HVAC case under the hood near/next to the blower motor.
The blower relay for the 1979 Cadillac is under the driver side of the dash. It is a plug in type and fits into the fuse box.
Look under the hood,passenger side at the firewall, you will see the blower motor,directly to the right going towards the drivers side ,you will see the blower control module, then the little small relay will be the next part over.
Under the maxifuse center on the firewall - directly in the top of the blower / heater assembly. You will need to remove the two screws that hold the fuse / relay box in place to get to the module.
it is located just below the fuse panel below the dash on the drivers side. large rctangle relay
Built in the fan blower/motor.
On the engine side of the firewall located approximately behind the position of the HVAC control module in the dash