Question about 1996 Cadillac DeVille

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1996 Deville AC/Heater Blower (Fan) Stopped Blowing

I bought a 1996 Sedan DeVille with about 144,000 miles on it. For 2 months the car seemed perfect. Because I bought it at the end of October I did not have a need for cooling.

I do not know if it is related, but about a week before the blower cut out (quit totally), I got the service warning that refrigerant is very low. I put the system on Economy (vs Auto) to wait for a warmer time to recharge the system. It's about 10 degrees here.

My usual practise was to set the temp at 85 degrees for my feet, and set the fan to lo-auto; which seemed to limit the fan speed to low or medium.

A few days ago, the fan was on auto-lo and I hit the button up to auto-hi to speed up the blower. At the same time the blower just cut off. I now have no air, hot or cold, coming out of the blower. On the interstate, heat does bleed into the car. You can feel decent heat coming thru the rear seat outlet at 65 mph or above. But in town or sitting still, no heat or air blows.

Every Buick or Olds I've owned had a blower relay, sometimes a regular and a high speed blower relay. Or a master fuse or circuit breaker. I cannot find anything in the 3 fuse blocks specifically linked to a heater or blower fan. The fan was not noisy in any way, I do not think the fan has failed.

The service writer at the Caddy dealer said it is probably something called a blower control module or just blower module; somewhere under the dash. He also said it was a dealer only part and cost maybe $250.00 for the part alone.

If anyone can help me determine if this is the problem, or hopefully a simpler reason why the blower might have just stopped suddenly; I am grateful to work thru all replies. The wire plug-ins at the blower motor are all looking clean and good, do not appear burnt or badly connected at all. Thanks

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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

Posted on Feb 05, 2009

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