Question about 1989 Cadillac Fleetwood

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1989 cadillac fleetwood digital dash flashes

The digital dash just started flashing, and the climate control display and fuel display will both go blank and say c then change to d then it will all flash and start working normally, and there a clicking noise coming from under the glove box when everything flashes. can anyone help.

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  • nadnick Apr 05, 2009

    thanks im a try and see if i can find one it seems like that is what might be causing it we ripped out the dash and found all the relays and see that there clickin over but it seems like that clickin to.

  • stevedi1111 Apr 11, 2009

    1989 cadillac fleetwood dash flashes and makes a clicking noise

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You have an ECM and a BCM, one located behind your glove box and the other underneath your passenger side dash. They are very similar in size, shape, and color but i think the ECM s behind the glove box. I had the same problem and replaced the one behind the glove box and the problem went away. They are both easy to replace but they cost around $70 if I remember correctly. And you have a chip you have to swap from the old to the new that you have to be careful with.

Posted on Mar 03, 2009

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1985 Cadillac Fleetwood d elegant installing a aftermarket radio lost the lights in the electronic climate control and fuel gauge.. fuse is still good where to look next


next I would check wires going to fuel gauge and climate control .more than likely when you took out radio the wiring might had come loose. if still no lights you can put back old radio and see if you have lights. wiring might be part of all three.then it might be possible those bulbs for fuel gauge and climate control might just have burned out especially being an 85

Feb 01, 2018 | Cadillac Cars & Trucks

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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
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

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Find location of flasher unit for turn signals for 1989 Cadillac Fleetwood?


see below for 4 way flashers ,regular flashers are under drivers side dash mounted on steering collum

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Hope this helps (remember to rate this and leave an testimonial about this free answer).

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Hope this helps (remember to rate this and leave an testimonial about this free answer).

Sep 27, 2011 | 1989 Cadillac Fleetwood

1 Answer

89 cadillac deville - both climate control and fuel centers are blank. Fuses are ok. any ideas


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The climate control system will not work in Auto mode but only in Econ mode in my 1989 cadillac fleetwood. I press Auto but it goes to Econ.


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Apr 09, 2009 | 1989 Cadillac Fleetwood

1 Answer

What is the fuse panel diagram for a 1986 Cadillac Fleetwood?


Fuse 1 radio
fuse 2 wiper
fuse 3 gage
fuse 4 turn/back up
fuse 5 electronic brake system module
fuse 6 defog
fuse 7 airconditioning fuel data center climate control panel cluster defog relay
fuse 8 elct. level control ignition
fuse9 cruise
fuse10 phone
fuse11 body
fuse 12 stop/hazard
fuse 13 antenna
fuse 14 elect. level control battery
fuse 15 spare
fuse 16 cigar(ash tray, elect. mirrors, alarm, glove box, LH information center)
fuse17 tail/lic(lamp, photo cell
fuse 18 vacuum pump
fuse 19 deck release
fuse 20 spare
fuse 21 instrument panel
fuse 22 parking lamps
breaker 23 power windows
breaker 24 horn
fuse 25 spare

Check with a Chilton Repair manual just to verify it yourself.

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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.

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