Question about 1999 Buick Century

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Electronic heating & air control unit screen went blank - but unit still controls

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Check connectors on display for any corrosion and any cracked or broken solder points, if it they are, resolder or replace digital display.

Btw, I’m available to help over the phone in case u need at

Posted on Mar 25, 2013


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Posted on Jan 02, 2017



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SOURCE: climate control unit passengers side

My Buick had the same problem and it was simply a stuck damper, behind the glove compartment. Freed it up, simple fix, works fine now.

Posted on Nov 21, 2008



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SOURCE: heating system

it is the control module u set for heat/ac in the center of the dash, all the electronics are in side this module that do the switching and maintain the temp u set

Posted on Jan 12, 2009

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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

Find a Diagram for 1989 Lincoln Towncar 4 Door Fusebox

this is for the base model

FUSE PANEL IDENTIFICATION (1983-90 LINCOLN TOWN CAR) The fuse panel is located in the instrument panel to the left of the steering column. To expose fuse panel, remove lower steering column finish panel.

Fuse & Circuit Breaker Identification

· 1 - 15 Amp Stoplights, Hazard Warning Lights, Speed Control Module, Trailer Tow Relays, Cornering Light Relay (1983-89)
· 2 - 8.25 Amp (Circuit Breaker) Windshield Wiper/Washer
· 3 - Blank
· 4 - 15 Amp Taillights, Side Marker, License Light, Parking & Coach Lights, Cluster Illumination, Trailer Tow Relay
· 5 - 15 Amp Turn Signal & Back-Up Lights, Trailer Tow Relay, Cornering Light Relays, Heated Rear Window Relay, Rear Defrost (1988-90), A/C Clutch & ATC Module (1990), Load Leveling (1990)
· 6 - 20 Amp Heated Rear Window Control, Speed Control Module & Clock Display, Illuminated Entry Module, Power Window & Police Accy Relays, Fuel Filler Door Release (1983-87), A/C Clutch & Cornering Lights (1983-89), Deck Lid Release (1987-90), Tripminder
· 7 - 10 Amp Daytime Running Light Resistor (1990)
· 8 - 15 Amp Dome LP-Clock, Key Warning Chimes & Electric Mirrors, Courtesy & Visor Mirror Lights, Autolight & Illuminated Entry Modules, Tripminder, Electronic Radio Memory, Trunk & Underhood Lights
· 9 - 15/30 Amp Heater Blower (15 Amp), AC/ATC Blower (30 Amp)
· 10 - Blank
· 11 - 20 Amp Radio & Power Antenna, CB Radio
· 12 - 20 Amp Door Cigarette Lighters, Power Seats & Door Locks (30 Amp), Tailgate Power Window (1983-89)
· 13 - 5 Amp Illuminated Outside Thermometer, Instrument Panel Lights
· 14 - 20/25 Amp (Circuit Breaker) Flash-To-Pass, Sun Roof, Power Windows
· 15 - 10 Amp Taillights, Parking, Side Marker/Coach, License Lights
· 16 - 20 Amp Horn & Front Cigarette Lighter
· 17 - 15 Amp Electronic Cluster, Message Center
· 18 - 10 Amp Warning Indicator Lights, Throttle Solenoid Positioner, Low Fuel Module & Autolight System, Dual Timer Buzzer & Electronic Chimes, Electronic Message Center


Feb 11, 2015 | 1989 Lincoln Town Car

1 Answer

How do i dismantle the dashboard

Presuming your car is fitted with the automatic heating/cooling system.
There is only one fan controls the heating/cooling system the distribution from this to the various vents is controlled by a series of electronic flaps which open or close dependent on the temperature selected at the control unit.
If the motor is running and the drivers side is receiving cooling it may be a problem with the control unit or a flap has stuck open.
Replace the control unit first as the flaps are a citroen job.
Control unit is the bit with the temperature displays etc.

Apr 01, 2014 | 2006 Citroen C5 1.8

1 Answer

I own a 1994 Dodge intrepid and am having an issue with the Air Conditioner. It stays running all the time. The controls have no affect none of them, I can't change the area it blows or nothing. None...

your electronic climate controller is bad, and needs to be replaced, it is now running in the default position. Best pace to find one is in a local junkyard or on ebay.

Aug 06, 2011 | 1994 Dodge Intrepid

1 Answer

Today the control panel for our heating and air conditioning in our 2004 Pacifica went out. It still blows heat, but we cannot control the temp. The air conditioning also does not work. What is wrong/

well thats sounds like a bad climate control unit..first check your relays and controller fuse, and vacuum lines if ok ,,check control unit ...replace

Jan 12, 2011 | 2004 Chrysler Pacifica

1 Answer

My nav screen went blank and the radio controls do not work. The radio plays but noe control over it. Also because the Nav screen went blank the back up camera and warning buzzer does not work.

Did you ever find a solution for the QX56 nav screen? Mine is doing the same, I have been told it is navigation unit or possibly the screen. Was wondering if you had any luck before I pay money for something that doesnt fix the problem. Thanks

Sep 10, 2010 | 2004 Infiniti QX56

1 Answer

Control panel (GPS screen) that controls ac and radio quit

its a 15 watt fuse in the kick panel under the dash. go to the auto repair store and buy a fuse kit so you can can always have spare fuses on hand. it also has a tester in it. my screen went blank as well and I, like you wasnt able to control the heat or air til I changes this fuse. I hope it works for you. best of luck!!!!!!!!

Mar 29, 2009 | 2001 Lexus LX 470

1 Answer

1999 Villager heater and a/c controls are dead and stuck on high

I am guessing your electronic control head is bad. You can buy a used one at Look for the page with the asterik for the cheapest prices and look for a warranty. New are @ $400 to $800. Used, under $100.
you have to remove center console for access to remove trim panel around control head ( heater controls). About a half hour job.

Dec 23, 2008 | 1999 Mercury Villager

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