Question about 1993 Cadillac DeVille
He horn don't work
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Posted on Jan 02, 2017
There's a blower motor (fan) under the hood and up against the firewall near the center of the car that takes some work to remove. It has gone out in the last 2 of my 4 Cadillacs. Turns out if you're not real careful with the positioning of the spark plug wires they will brush up against it, and if one of them gets cracked or brittle it will "arc" and short out the blower motor. The a/c compressor should still come on (you'll hear a click when it engages) but you won't get any air blowing into the cabin, hot or cold.
The part was like $200 stock (year 2000 prices) and it took about an hour to remove it. My Caddy at that time had this damn strut bar going across the engine bay which we eventually removed to get to the blower motor.
Posted on Apr 09, 2009
I have a 2004 CTS. I know there are two fuse boxes underneath the floor carpeting in front of the rear seat. Remove the rear seat bottom cushion and pull the carpet forward and you will see them. Inside the cover identifies what fuse is for what function. Hopefully it is a blown fuse, otherwise my guess would be a short in the wiring some where.
Posted on Jan 17, 2009
I have had the same problem and I have come to the conclusion it is the security system. After 3 minutes the car will start so there is nothing wrong with the battery or starter. I have had it to the dealer a few times and they cannot solve it. It may be the locks on the doors and they may not be resetting properly. I have learned to live with it.
Posted on Oct 14, 2009
The fan assembly is under the glove compartment. Remove cover[3 scews] unplug electrical connector. then remove the 3 bolts that hold the fan assembly in the housing. take motor apart and clean check brushes in brush holder, then sand the armature where the brushes ride. Stretch spring on brushes , the put the motor back together. works 95% of the time.
Posted on Oct 15, 2010
SOURCE: 1991 cadillac deville NO HEAT
I had the same problem in my 1991 caddy, and turned out to be the blend door. It is located in back of the glove compartment. There are two kinds, the automatic blend doors and the manuel ones. Since the temperature is automatic and programmed to stay where it is set, it would be an "automatic blend door". Not a hard fix...
Posted on Jan 25, 2011
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