1986 cadillac sedan deville data center error message d

It is a known issue

92 Deville climate control not coming on ' Cadillac Owners ...

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Jan. 10, 2013 - Hello, I have a 92 cadillac deville 4.9L In general it runs fine but recently we ran into a problem. The problem is the climate control panel ... 1992 Deville Heater/Climate Control Issues ' Cadillac Owners ...
Oct. 5, 2009
92 Deville fuel center and climate control not working ...
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1992 Deville BCM ' Cadillac Owners Forum
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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
FACTORY WORKSHOP REPAIR MANUALS.

For these issues... (I doubt they are related)
Starting with a GREAT CIRCUIT DIAGRAM
would be the best approach...

I PREFER PROFESSIONAL GRADE FACTORY
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)
OEM 1985 1993 CADILLAC DEVILLE FLEETWOOD FUEL DATA CONTROL DISPLAY 1YR...

Rockauto (out of stock (I rest my case))
http://www.rockauto.com/en/catalog/cadillac,1989,deville,4.5l+273cid+v8,1025693,fuel+&+air,fuel+display+control+module,10492

Extra information
More Information for BLUE STREAK ELECTRONICS FDC1

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

Info
More Information for BLUE STREAK ELECTRONICS PRG2

ENTIRE control panels are available on eBay(some good... some NOT-SO-MUCH (but you are protected (sorta)).
85 92 CADILLAC DEVILLE ELECTRONIC CLIMATE HEATER AC CONTROL SWITCH eBay

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

Climate control is turned on by pressing the 'auto/econ' button.
There will be a temperature control for it that lights up on the right hand side of console display. One can also control the fan speed there or leave it on 'auto'

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.

the body control module went bad on you

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

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.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

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

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.

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.