Last post on May 16, 2013 at 6:14 AM
You are in the Cadillac DeVille
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Cadillac DeVille, Heating / Cooling, Sedan
#79 of 88 no air flow,89 deville
Oct 20, 2011 (9:35 pm)
Am new to this car,am not getting air flow from any vents,can hear blower moter working but nothing out of vents,
#80 of 88 Re: blower moter [fraliex]
Dec 14, 2011 (5:07 am)
Had the same problem with my 91 Fleetwood...if it's in the same location ....the blower motor is in the middle of the firewall...gave it a few light taps with a hammer or whatever...must be rust or whatever...and the blower came right on....it worked for me.... could be worth a try
#81 of 88 95 deville blower module?
May 13, 2012 (1:20 pm)
I have battery voltage and a good ground at the blower motor connection but no power to the third wire and the a/c compressor doesn't run unless I jump across the relay by the bulkhead fuse panel under the hood. I've tested all the fuses even in the trunk and they're all fine and I checked and fixed all the code problems I had (mice chewed wires to shreds) still no blower.
I'm thinking it must be the adl module or the wires to it but I have no idea where its located. I looked at one at autozone so I would know what it looked like and have the dash wide open and don't see it. Any ideas?
It's my bosses car and it's sat five years because his normal shop had given up on it. Spose I could get a raise if I figured it out? Yeah right.
#82 of 88 Re: 95 deville blower module? [joanmichaa]
May 14, 2012 (10:20 pm)
Seems like I've read that the control module is in the dash, sitting on top of the heater box?????
#83 of 88 heater control
May 29, 2012 (7:04 am)
i can get cold air from right side vents but only get ambient air on left side temp. control will not work on left side 2002 deville
#84 of 88 Re: heater control [bruuce]
May 29, 2012 (10:42 pm)
To give Driver and Passenger different temperature control, the air box has 2 doors, one for each side. (There are more doors, for lower, mid, and defrost. It's complicated in there.) The Driver side door isn't working for you. If it is a servo motor, the electric motor that moves the door, it would be cheaper than if it is the door itself. Wild guess, the servo might be about $100. I've no idea what labor might be. If it is the door itself (The 'curtain' on the door might be torn up, or it is jambed.), it will probably be much more, tearing into the air box itself is more complicated.
It might be the dash control unit (about $250???), but I bet its a servo or jammed door.
Your Cadillac can display error codes that have been set. Without having to get a code reader plugged in. It can be set into diagnoistic mode and you can scroll thru all the codes that are set. If the air temp door are not functioning correctly, it probably is setting a code. And knowing the code will tell you more about what is wrong.
Go here to read how to get into diagnostic mode and how to scroll thru them.
Go here to get more info about specific codes.
#85 of 88 Re: 93 caddy deville climate control and fuel data gauge show a "c" only on [fveaces1]
Dec 10, 2012 (11:37 am)
Exact same problem with my 93 Caddy Deville - both left and right panels show that "c" and the blower fan stays on. When the car is shut off, the blower fan will periodically come on. I know this because I've slept in this car on many road trips. Drains the battery with all this overnight action.
I want to know if you have solved your problem and how. I have been told that I will need to replace the BCM (does this stand for Blower Control Module?). I will be taking this vehicle in for repairs at my local Cadillac dealer and shop, and I don't want this problem to be shrouded in mystery. Two years ago, when this happened, same dealer suggested pulling the negative off the battery to 'reset' the Computer. That does work, but only for a few minutes now as the time it does work has been steadily decreasing over these last two years from a day or two to only a few minutes - then shuts down again, displaying that dreaded 'c' on the panels.
Thanks if you can help! Sandy
#86 of 88 Re: 93 caddy deville climate control and fuel data gauge show a "c" only on [sandypaiement]
Dec 14, 2012 (12:32 am)
If the blower motor runs when the ignition is turned off, I think there is a 'box' sitting on the air box (inside, inside the right dash) that is the control box for the auto heat/AC system. Replacing this will fix the problem.
#87 of 88 Re: 93 caddy deville climate control and fuel data gauge show a "c" only on [bolivar]
Dec 14, 2012 (11:13 am)
A couple of days ago, I bought a Blower Control Module and had the mechanic at Canadian Tire put it in. $400 to have it all done, and it had no effect. It was he who suggested that this part is the one causing all the trouble. NOW, I went back to the Cadillac Dealer/Service people and was about to order the BODY Control Module, but first checked with their service department. After telling them my tale of woe with this vehicle and how they had been unable to diagnose the problem TWO YEARS ago, they told me they now had the most qualified and experienced ace mechanic on their staff who could properly diagnose the problem. The service manager told me to wait until I hear from them, because, being all apologetic, they were going to research my problem thoroughly and not waste too much time on diagnostics, but get right to the heart of the matter. I am waiting for their call. I am confident they will pull through for me with the fix on this, and when it is done, I will return to this forum and provide the answer, so anyone else with the same problem may benefit.
May 16, 2013 (6:14 am)
The drivers side climate control will not switch to A/C,it says it is on but it blows hot