I have a 1992 Deville and had to replace the "power module" because the a/c blower motor was not working at all. When I replaced the module the fan worked for one day then stopped. I replaced the "power module" a second time thinking that perhaps the new one went bad for some reason but the blower motor did not work at all. What should I do next.

SOURCE: 1992 cadillac deville - hvac blower motor does not shut off.

replace the relay , when a relay sticks like that , a good test is to slap it with something like the handle of a screw driver , see if it un-sticks , its not a fix , just a test . cheers'

SOURCE: 1996 Deville AC/Heater Blower (Fan) Stopped Blowing

I would recommend a salvage yard to get a good used one alot cheaper also try this place they carry only GM parts: Schram Auto and truck parts 1-800-292-1032 and also explain to them the problem you are having and these guys can assist you in getting the right part

SOURCE: 03 Santa Fe blower motor resistor replacement

the part you need to replace is the blower motor resistor assembly it has a screw on each side of it with a plug in th middle and for the most part it is on the passanger under the dash behind a black cover stop by a auto store and take a look at one and then you know what you are looking for and at the same time you can find out how much its going to cost i am only going to guess it somewhere around $15.00 to 25.00 dollars.

SOURCE: 1992 Cadillac Coupe Deville blower fan runs all the time

The BLOWER MODULE is located on the A/C EVAPORATOR housing located UNDER THE HOOD passenger side firewall. Has 2 electrical connectors. Mounted with 4 screw bolts.Hope this helps

SOURCE: '96 cadillac deville has no air.cond./heat

Unfortunately for you ( i had the same problem) The A/C compressor HAS to be in working order on these cars or else all heck breaks out with the climate control.

If it's a nice car, get a new compressor installed. If it's borderline- get rid of the car.

I paid 2200 to Cadillac to fix the A/C and climate control only to have the transmission fail in my '93.

I dumped the car soon thereafter....