Question about 1992 Cadillac DeVille

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Electronic climate control and fuel data center not working

I have a 1992 Cadillac Sedan Deville which I recently purchased at an auto auction not knowing that the fuel data center and the electronic climate control do not work. The components are not displaying anything. When I took it to the cadillac dealer they told me that the components were fried, so I got the WORKING components and replaced them both. Still not doing anything all fuses are getting power to them, and whenever I push the defrost button a ticking is going on near the relay switch, which I replaced and it is still ticking, any adivce?

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  • lindseycardw Mar 07, 2009

    replaced fule data center and electronic climate control, bcm, ecm fixed the problem. thank you saved a fortune.

  • lindseycardw Mar 21, 2009

    94 or new only reads



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Hi there :
hey have you taken it to autozone and had them do a free diagnostics on the car then can tell u exactly what the problem is i am suspecting a computer issue

Posted on Mar 07, 2009

  • kjohnson85 Jan 12, 2011

    My 92 deville doesnt start, no info on climate or fuel.. whats wrong? why wont it start? please email me @ if u have an answer.. IM STRANDED!


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Your vat system, more then likely. I had that same prob with 90 cadi deville. Went on line to this site I found called new . This guy ivented a bypass for your vat alarm and everything still work. Its very reasonable and after you install it you can buy your keys from walmart for a couple of dollars. If you need more info call 7042982157 tracy is my name. It works no more prob ever.

Posted on Feb 24, 2013


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Cadillac deville 89 fuel data center and climate control arent working.

Hello Belinda Reid,

Nice car...
(sorry... I'm sure you are not in the mood right now)...

There are CADILLAC Clubs across this country
(lovers, admirers, professionals & amateurs)...

I recommend for future issues you seriously consider
looking into joining... The wealth of information is
really quite EXCELLENT... or buying your own set of

For these issues... (I doubt they are related)
would be the best approach...

repair manuals ... but FREE circuit drawings & your 22 TECHNICAL Service Bulletins (TSBs) can be found
on BBB Industries website
(registration is required... these are real documents)
BBB Industries Premium Alternators Starters Power Steering Products

In the 1989 Deville (an issue shared issue w/Eldorado) ...
I did find a TSB on "BLANK DISPLAY" ... Ironically the
TSB page was also blank (GM humor ..
(I presume)).

The FUEL GAGE seems to be a popular part...
(typically means "unreliable: great point to START").

On eBay (refurbished (1 year warranty)

Rockauto (out of stock (I rest my case)),1989,deville,4.5l+273cid+v8,1025693,fuel+&+air,fuel+display+control+module,10492

Extra information

Also see HVAC Controls, Motors & relays
(another OUT of STOCK: popular part)...,1989,deville,4.5l+273cid+v8,1025693,heat+&+air+conditioning,programmer,19408


ENTIRE control panels are available on eBay(some good... some NOT-SO-MUCH (but you are protected (sorta)).

Dress warm... happy hunting
On the HVAC if the controls seem to be working... another
popular part are in the ACTUATOR DOOR sections of your parts catalogs...

Look through the eBay parts for ideas...
0results for cadillac 1989 deville hvac vac control
AND don't overlook the CONTROL RELAYS that ABOUND in
your vehicle... Buy a few spares BEFORE they become rare.

Hope this helps.

Carnac the Magnificent

Oct 22, 2017 | Cadillac Cars & Trucks

1 Answer

I have a 1996 Cadillac Sedan DeVille. This spring...

If the a/c does not engage as a result of the electronic control system in your 1996 Cadillac, the climate control system may need to be replaced.

However, if the problem is being caused by low charge of R134a in the system, have the system charged before changing that electronic part.

I have never seen a Cadillac Climate Control System do this, which leads me to believe that it may be more electronic than refrigerant pressure related.

If the refrigerant pressure was low in the system, the climate control system should still stay on 'auto' mode, I think, and simply blow warm air.

May 19, 2010 | 1996 Cadillac DeVille

1 Answer

The Fuel Data center lights are not working and the electrnic climate control lights arent working neither, what would you say are the possible problems

do you mean the digital readings are not lit up or the "Dash Lights" if the display is not lit it will be a circuit board problem.

Jul 15, 2009 | 1992 Cadillac DeVille

1 Answer

1993 cadillac , letter c on fuel data center and climate control

I don't know about the fuel data issue, but the climate control module has failed.

Apr 21, 2009 | 1993 Cadillac DeVille

1 Answer

1986 Cadillac Deville, Fuel Data Center & Electronic climate control panels both reading 'c' and blinking rapidly. the radio blinks rapidly as well, tried fuses, now i'm lost

If its a digital dash not that this sounds good but smack the dash right in front of the steering wheel a few times and if it clears up or makes it do other things it needs a new instrument cluster.

Mar 30, 2009 | 1986 Cadillac DeVille

1 Answer

Heater not blowing, No digital readout on the fuel data center and electronic climate control unit on a '92 deville.

check your fuses it might just need a new 20 amp fuse which is a little "U" shaped yellow thing

Jan 15, 2009 | 1993 Cadillac DeVille

1 Answer

Fuel Data Center and Electronic Climate Control not funtioning

This is defenetly the BCM, I had a 1990 with all of the same problems. Buy a rebuilt and install it behind the clove box. Remember that you must install you memory prom into the new unit as they don't come with any in them (it is what is memorizing your miles driven.) You will get off pretty easy on this one as they are available and not too expensive.

Jan 13, 2009 | 1989 Cadillac Sedan DeVille

1 Answer

Electrical Problem with 90' Cadillac Sedan Deville

the climate control is intergrated through the pcm and ecm i would advise you to take the vehicle to the service shop they have a diagnostic scanner that will access the ecm and either clear a code that prevents the climate control from working or find a more severe problem that requires you to replace the hole unit. please rate this solution. thank you and good luck.

Aug 29, 2008 | 1990 Cadillac Deville

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