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.
bad blower motor
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.
Probably the blower motor, wiring to it or control switch
Assuming that the a/c was in good shape before it suddenly stopped working, the problem is probably the blower motor. As it turns out, this is very common. Try searching answered questions under "blower motor 1997 Cadillac Deville" I just had to change mine in a 1996 Deville. Motor aprox. $240.00/Labor aprox. $100.
On the fire wall. Behind the engine.
Defective Blower Motor Resistor Pack.
the blower motor is located on the passenger side of the interior under the glovebox.
With that year deville...its more than likely the blower motor
The blower motor fuse protects the blower motor electrical circuit. The blower motor relay operates only the high speed function of the blower motor. The blower motor speed resistor operates the lower speed functions of the blower motor.
might need to replace blower motor
A bad resistor or a bad switch.
The blower motors only work with the engine running. If the blower motor has three wires on the electrical plug, then the blower motor module is built into the unit & it's very expensive. Sometimes, you can tap on the motor with a hammer & it may work or slowly turn. If this is the case, replace the blower motor.
It's close to the blower motor.
under hood center of firewall / on my DHS it's under the dashboard on the passenger's side.
where are the other motor mounts on the 94 deville
Right side under dashboard. Remove plastic cover then look for a Round plastic cover.
no it does't
Blower motor speed resistors are generally located close to the blower motor.
Check to see if you are getting power to the blower motor - if so motor is defective if not problem in circuitry to blower motor
Built in the fan blower/motor.
2003 cad deville takes 4 quarts of motor oil
Ground the motor housing on the new motor and see if it works then
how to change the blower motor
I have an 03 deville and found my blower motor under the dash on the passenger side. It was intermiitant so I took it out and cleaned it. Works fine but I am planning on getting a new one as the brushes are close to worn out. I would advise you do the same
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