Question about 1990 Cadillac Deville

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How do I fix the HVAC panel and Fuel Data Center, it works part time.

I remember there being a TSB on this but I cant remember the procedure or able to locate it because it is older than 1994. But it had to do with condensation under the dash, that I'm pretty sure of.

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  • Dave Callender
    Dave Callender Feb 22, 2016

    Your correct, the owner told me he had replaced the BCM when in reality he replaced the ECM. Everything works great now! It just goes to show you, do your own diagnostic work.

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6ya6ya

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Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

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Posted on Jan 02, 2017

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Joe Prete

  • 3 Answers

SOURCE: 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.

Posted on Jan 29, 2009

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1 Answer

I have a 1999 Cadillac Deville. The ac will sometimes not blow, others work fine. Cold when going, think its a fan/blower thing, the ac always comes on, but cannot get the blower to always work


Blower motor control module , maybe. The HVAC control panel sends a PWM - pulse width modulation control .

HVAC Blower Motor Circuit http://www.bbbind.com/free-tsb free wiring diagrams . Enter vehicle info. year , make , model an engine . Under system click on HVAC ,then under subsystem click on HVAC controls . Click the search button , then the second blue link . Blower motor control diagram . Suggest you take it to a qualified repair shop if you don't know how to diagnose electrical systems on automobiles

Jun 04, 2018 | Cadillac Cars & Trucks

1 Answer

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

Oct 22, 2017 | Cadillac Cars & Trucks

1 Answer

Why don't my gas gauge and my heater work in my 1989 cadilac divel


Without testing hard to say ! Your gas gauge not working could be the gauge it self is bad or the sending unit in the fuel tank is bad or somthing wrong with the BCM body computer . Are you talking about blower motor not working ? The blower motor is controlled by the BCM . Do you know how to do electronic testing ? I don't know if this year does it or not but on some cadillacs if you push the off and warmer button on the climate control panel the vehicle will show codes or will go into diagnostic mode . Been a few years , i worked at a Caddy dealer back then .You can look at free wiring diagrams at http://bbbind.com/free_tsb.html After you enter vehicle info . year ,make , model and engine size under system click on HVAC then under subsystem HVAC controls will automatically show ! Click the search button , then click on each blue link one at a time . You will see the complexity of your vehicle . Body computer , climate control panel . All electronic ! Fuel sending unit is a input to the BCM ,from there it goes to the fuel data center .

Dec 20, 2016 | Cars & Trucks

2 Answers

It has duel climate controls. With both set to 60, driver's side blows hot while passenger's side blows cool. What does it sound like


our honda crv did this , there was a problem with the heater core being partially pluged...there ended up being a recall on heater core

Apr 30, 2016 | 2006 Chevrolet Trailblazer

1 Answer

How do i get to the drivers side HVAC blend actuator


You have to just about pull the whole dash out !


Removal Procedure




  1. Remove the front floor kick-up panel. Refer to Kick-Up Panel Replacement - Front Floor in Interior Trim.


  2. Remove the cover from the I/P electrical center.


  3. Remove the HVAC CON (HVAC controls) MiniFuse?® #27 from the I/P electrical center.


  4. Remove the I/P upper trim pad. Refer to Instrument Panel Upper Trim Pad Replacement in Instrument Panel, Gauges and Console.


  5. Remove the instrument panel cluster (IPC) to steering column bracket retaining screws.


  6. Reposition the IPC to better access the LH temperature valve electric actuator.


Is yours manual or automatic HVAC system ? if you haven't done this before I suggest you take it to someone who has !

Jun 02, 2015 | 1999 Chevrolet Corvette

1 Answer

How do I fix the light in the heater control?


The heater control will have to be removed and possibly disassembled to get at the bulb.

1995-98 Models
  1. Disconnect the negative battery cable.
  2. Remove the radio/HVAC controller cover by depressing the center pins inward to release the push pin fasteners. Be careful not to push the center pins all the way through the fasteners.
  3. Remove the push pin fasteners and pull the radio/HVAC controller cover rearward.
  4. If equipped, disengage the traction control/fog lamps/rear defogger electrical connector.
  5. Remove the radio. Refer to the Radio removal and installation procedure, later in this section.
  6. Disengage the electrical connectors behind the controller face. Remove the wiring harness clip from the module boss.
  7. Disengage the temperature and mode cables from the controller assembly by squeezing the lock tabs together while pulling the cable housing straight up. Pull the cables straight up to disengage them from the control lever pins.
  8. Remove the HVAC control panel screws, then carefully pull the panel forward and remove it from the vehicle. To install:
  9. Position the HVAC control panel to the dashboard and install the retaining screws. Tighten the retaining screws to 22 inch lbs. (2.5 Nm).
  10. Install the white temperature and black mode cables over the pins.
  11. Install the cable housings into the clip grooves, then push down to lock them into position.
  12. Reattach the electrical connectors to the back of the control panel face. Install the wiring harness clip to the module boss. Be sure that the wiring harness does not bind with control lever movement.
  13. Install the radio.
  14. If equipped, reattach the traction control/fog lamps/rear defogger electrical connectors.
  15. Install the radio/HVAC controller cover by pushing in at the clip locations.
  16. Install and lock the push pin fasteners.
  17. Connect the negative battery cable.
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Oct 26, 2010 | 1998 Saturn SL

1 Answer

Ac blowing heat on side and air on the other side.


Air Door Actuators Removal & Installation Console Mode To Remove:
  1. Remove the center console from the vehicle.
  2. Detach the air outlet duct from the center console.
  3. Disconnect the console mode actuator connector.
  4. Detach the console mode actuator from the center console.
To Install:
  1. Attach the console mode actuator to the center console. Torque the screws to 17 in-lb (1.9 Nm).
  2. Connect the console mode actuator connector.
  3. Attach the air outlet duct to the center console. Torque the screw to 17 in-lb (1.9 Nm).
  4. Install the center console into the vehicle.
Left Side Air Temperature To Remove:
  1. Remove the instrument panel carrier from the instrument panel.
  2. Disconnect the left side air temperature actuator connector. HVAC control module - left side gm-10-00-1844.gif

  3. Detach the left side air temperature actuator from the HVAC module.
To Install:
  1. Attach the left side air temperature actuator to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  2. Connect the left side air temperature actuator connector.
  3. Install the instrument panel carrier onto the instrument panel.
  4. Recalibrate the left side air temperature actuator.
Right Side Air Temperature To Remove:
  1. Remove the instrument panel carrier from the instrument panel.
  2. Disconnect the right side air temperature actuator connector.
  3. Detach the right side air temperature actuator from the HVAC module.
To Install:
  1. Attach the right side air temperature actuator to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  2. Connect the left side air temperature actuator connector.
  3. Install the instrument panel carrier onto the instrument panel.
  4. Recalibrate the right side air temperature actuator.
Mode To Remove:
  1. Remove the left floor duct from under the instrument panel (I/P).
  2. Disconnect the mode actuator connector. HVAC control module - left side gm-10-00-1844.gif

  3. Detach the mode actuator from the HVAC module.
To Install:
  1. If installing a new mode actuator, move the mode door to the middle position.
  2. Attach the mode actuator to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  3. Connect the mode actuator connector.
  4. Install the left floor duct under the instrument panel (I/P).
  5. Recalibrate the mode actuator.
Defrost Valve To Remove:
  1. Remove the instrument panel carrier from the instrument panel.
  2. Disconnect the defrost valve actuator connector. HVAC control module - left side gm-10-00-1844.gif

  3. Detach the defrost valve actuator from the HVAC module.
To Install:
  1. Attach the defrost valve actuator to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  2. Connect the defrost valve actuator connector.
  3. Install the instrument panel carrier onto the instrument panel.
Recirculation To Remove:
  1. Remove the HVAC module from the instrument panel.
  2. Detach the air inlet assembly from the HVAC module. Recirculation actuator removal and installation gm-10-00-1845.gif

  3. Disconnect the recirculation actuator connector.
  4. Detach the recirculation actuator from the HVAC module.
To Install:
  1. Attach the recirculation actuator to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  2. Attach the air inlet assembly to the HVAC module. Torque the screw to 17 in-lb (1.9 Nm).
  3. Connect the recirculation actuator connector.
  4. Install the HVAC module into the instrument panel.
  5. Recalibrate the recirculation actuator.
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Aug 17, 2010 | 2004 GMC Envoy

2 Answers

After filling my fuel tank, gauge does not go to full....it takes a few days or hours for gauge to read full


There is a TSB on high sulfur fuel usage, and how it impacts the fuel level resistance.
If you change fuel, it might start working again. The TSB is : ERRATIC FUEL GAUGE OPERATION TSB 08-2-9

Publication Date: January 22, 2008
FORD: 2004-2008 F-150
LINCOLN: 2006-2008 Mark LT


ISSUE:
Some 2004-2008 F-150 and 2006-2008 Mark LT vehicles, built before 12/3/2007, may exhibit erratic fuel gauge operation or illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0460 or P0463, and/or Instrument Cluster Module DTC B1201. This may be caused by sulfur contamination in the fuel causing an open or high resistance in the fuel level sender.

ACTION:
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Install a new fuel level sender following the service procedure instruction sheet provided in the fuel sender kit.

PART NUMBER PART NAME
8L3Z-9A213-E Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-26 Gal Tank - 126/132" WB )
8L3Z-9A213-F Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-30 Gal Tank - 139" WB)
8L3Z-9A213-G Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-27 Gal Tank - 145/151/163" WB
8L3Z-9A213-H Kit - Fuel Sender (2006 starting 12/8/2005 through 2008 - FFV-36 Gal Tank - 145/151/163" WB
8L3Z-9A213-A Kit - Fuel Sender (2004 through 2008 - Gas-26 Gal Tank - 126/132" WB
8L3Z-9A213-B Kit - Fuel Sender (2004 through 2008 - Gas-30 Gal Tank - 139" WB
8L3Z-9A213-C Kit - Fuel Sender (2004 through 2008 - Gas-27 Gal Tank - 145/151/163" WB
8L3Z-9A213-D Kit - Fuel Sender (2004 through 2008 - Gas-36 Gal Tank - 145/151/163"WB



WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME
080209A 2004-2008 F-150, 2006-2008 Mark LT: Install New Fuel Level Sender, Includes Time To Remove And Install Fuel Tank (Do Not Use With 9002A, 9002A4, 9002A6) 1.9 Hrs.

DEALER CODING
BASIC PART NO. CONDITION CODE
9A299 42

Apr 20, 2010 | 2006 Ford F-150

2 Answers

How or what do I have to do to get the air to blow through the ac vents ? It only blows through the defroster...


Hello nuttierthenu...Chrysler issued a TSB (technical service bulletin) on this problem to correct the issues it was having on the Stratus and the Cirrus.....
The mode door actuator, located in the A/C-Heater housing, is controlled by the Body Control Module (BCM) . When the operator requests a mode of operation, the BCM processes the signal from the control head and actuates the mode door to the proper position. 62486887.gif
The good thing is the Body Control Module (BCM) will store a DTC for this system but the bad thing is you need the Chrysler DRB scan tool to get them.
62486890.gif
There is a TSB out on this problem.
TSB NO: 24-12-95
GROUP: Heater & A/C
DATE: Aug. 18, 1995
SUBJECT:
HVAC System Stuck in Defrost Mode
MODELS:
1995 (JA) Cirrus/Stratus
SYMPTOM/CONDITION:
HVAC system stuck in defrost mode. May be intermittent.
DIAGNOSIS:
Check Diagnostic Trouble Codes (DTC's) in the Body Control Module (BCM). If no DTC's exist and vehicle is no longer stuck in defrost, perform all steps in the repair procedure (Steps 1 through 5).
For a "HVAC Mode Door Feedback Failure", proceed to step # 1.
For a "HVAC Control Head Input Shorted To Ground/Shorted To Battery", refer to the 1995 Cirrus/Stratus Body Diagnostic Procedure Manual (Publication No. 81-699-94029), Section 7.0, "Manual A/C System".
PARTS REQUIRED: AR 4864052 Wiring Connector Repair Kit, Mode Actuator Connector AR 4644834 Actuator, HVAC Mode AR 4856997 Body Control Module, Vendor Part, Order on DIAL Function 11 AR 4864311 Wiring Connector Repair Kit, HVAC Control Head Connector REPAIR PROCEDURE:
This bulletin involves testing and replacing the HVAC Mode Actuator/Connector, Control Head Connector, or Body Control Module as necessary.
  1. Check Mode Actuator connector (C215) for full insertion/locking into Mode Actuator and spread terminals. Repair as necessary. The terminals in question are referenced on Page 8W-80-27 of the 1995 JA Service Manual (Publication No. 81-270-5121). In connector C215 check cavities #2 through #4. A visual check is not sufficient. A .0044" pin gauge is required. Repair any spread terminals with wiring connector repair kit P/N 4864052. Replace HVAC Mode Actuator P/N 4644834.
  2. Check BCM P/N. If it is not P/N 4856997, replace. Proceed to step # 4.
  3. Check HVAC Control Head connector (C204) for full insertion/locking into Control Head and for spread terminals. Repair as necessary. The terminals in question are referenced on Page 8W-80-23 of the 1995 JA Service Manual (Publication No. 81-270-5121). In connector C204 check cavities #5 and #8. A .0040" pin gauge is required. Repair any spread terminals with wiring connector repair kit P/N 4864311.
  4. Check battery voltage. If not above 11.5 volts, charge battery. Check for charging system problems. Perform "On Vehicle Battery Test Procedures" as outlined in section 8A of the 1995 JA Service Manual.
  5. Assure ignition is off and key is out. Pull IOD fuse (10A, cavity #5 in Junction Block). Do not replace for a least 1 minute. This will clear all BCM faults and cause the HVAC to re-calibrate when ignition is turned to the "RUN" position.
There it is...Good luck...hope this helps, please rate me a fixya

Jul 24, 2009 | 1995 Chrysler Cirrus

3 Answers

2002 GMC Yukon front A/C blowing warm air


Here is a TSB (Technical Service Bulletin) for your vehicle for loss of temp control.
File In Section: 01 - HVAC
Bulletin No.: 01-01-39-007
TECHNICAL
Subject:
Loss Of HVAC System Mode and/or Temperature Control 

(Reroute Wiring Harness)
Models
1999-2002 Chevrolet and GMC C/K Pickup Models (Silverado and Sierra) 1999-2002 Chevrolet and GMC C/K Utility Models (Avalanche, Suburban, Tahoe, Yukon, Yukon XL, Denali) 2001 GMC Sierra C3
2002 GMC Sierra Denali
2002 Cadillac Escalade, Escalade EXT
Some customers may comment that they cannot control the HVAC system modes and/or the temperature. These concerns may be intermittent.
Cause
There may be poor terminal contact and/or bent terminals in connectors C206 (RPO C68 automatic HVAC controls) or C296 (RPO C60 manual HVAC controls). Excessive tension on the wires due to the wiring harness being miss routed in the instrument panel carrier may cause these conditions.

If the warranty campaign is over i am sure they can or may have in the system on how to correct the problem.
Good luck and hope this helps, keep me posted if you need help on to the repair procedure.


May 26, 2009 | 2002 GMC Yukon Denali

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