I am not sure what causes the climate control to go blank.... however you can manually open the door that allows heat to come in contact with the blower.....remove glove box.... easily done.... (screw inside glove box).... now you have access to heater assembly... there is a white arem visible with a metal link connected to it... pull the metal link off...then grab the white arm and push it over to the right completely...this will open the heater core door. allowing that heat to come in contact with blower...now your blower heat should be hot now! :)
Probably the blower motor, wiring to it or control switch
The blower control module is defective.
Climate control blower motor was the fix. The part cost 441 dollars.
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
Should under dash on firwall near blower motor.
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.
the white wire is the speed control circut the blower motor is bad.
You will need to replace the blower motor control unit located inside the blower motor housing, this part is not the same as the part on standard explorers, it is not the same blower motor resistor.
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.
usually whats known as a blower resistor
If your blower motor is either not turning itself off, or randomly turning itself on with the ignition off (and you have auto climate control), the problem is the blower control module. Located directly behind the blower motor, it takes information from the climate control, and is in charge of turning the blower on/off. To replace the blower control module, remove the splash shield under the passenger side dash (there's 3 plastic retainers hold it in place). The blower control module is located behind the blower motor, and is held in with 3 bolts. The 2 rearmost bolts (by the firewall) only need to be loosened, and the front one removed. The entire unit rotates down and can then be replaced.
The blower fuse for a 1995 Deville is located in the fuse panel in the right rear of the vehicle. It is actually inside the trunk. The relay switch for the blower is located behind the glove compartment in the passenger area of the vehicle.