Question about 1995 Cadillac DeVille

3 Answers

Climate controll inop. on 95 devile

The display reads fine. all buttons function and show changes on display....however, no air blows. I don't know if I have a bad blower (checked fuses) or if there is a bigger problem. I've done lots of work on other cars, but this is my first caddy and I am unfamiliar with the auto climate control. Thanks

Phill
I just bought a 95 concorse and no blower on any of the system hot/A/C/defogger/defrost?????? can feel heat or cold but no fan/blower? HELP PLEASE

Posted by on

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cadillac Master
  • 19,396 Answers

The problem may be a faulty blower motor behind the heather core, or a problem with wirings.

Posted on Feb 23, 2009

  • Ginko
    Ginko Feb 23, 2009

    To start you need to check the wiring to the blower motor, located under the hood near to the AC Heater unit . A short in there may cause the whole climate control not to work.

    If blower motor is fine, check the AC unit for shorts or broken contacts.

    If still nothing in there , check the wiring harness to the controls for Climate Control near the instrument panel.




×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi and welcome to FixYa,

To my understanding, a 1995 Cadillac Concours' Heater-A/C blower does not use a conventional resistor type to control blower speed. Instead it uses a H-A/C Programmer (Control Module). This programmer is powered by a 10AMP fuse (#14) located at the trunk compartment fuse block. Other fuses to check would be:

  • # 4 40AMP Maxi-Fuse for the HVAC Power Motor;
  • # 6 10AMP Trunk fuse block for the rear blower motor and console switch;
  • #17 10AMP Trunk fuse block for the rear blower motor.
A 12VDC test light would be handy to determine the presence/absence of voltage at the terminals. Of curse worst case scenario possibilities are:
  • the blower motor itself;
  • H-A/C Programmer (Control Module).
This pdf document lists the different fuses and relays (and their location) related to the electrical wiring of an a 1995 Cadillac Concours.

Good luck and thank you for using FixYa.

Posted on Feb 23, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 564 Answers

Hi,
On older Cadillacs, a few years older than yours, there are known failures where the blower usually just keeps blowing after the car is shut down. This is usually the blower control/controller unit, which, I think, sits on top of the AC/Heater exchanger unit under the passenger side of the dash. This is the 'box' that controls the auto temp control. Yours is the first time I've hear about the blower goes off when the car is shut down, but comes on some time later. 
 
Ok, read in your owners manual closely about the Heater/AC system. I think there is a section that talks about how the blower will continue to correctly run after shutdown, under certain conditions. But I think it runs only for a couple of minutes or so in this mode. I don't know what these conditions are, but they are an attempt to 'dry out' the system, or some such thing. If you system is supposed to do this, then maybe it is working correctly. 
 
In humid weather, with the AC running, with the car idling and stopped, does water come out of the bottom of the car? Normally, you should get condensation on the AC coil inside the car when running in hot humid weather, and this water comes out of a drain outside the car. If you car does not do this, then the drain is plugged. But, if you have had service done for the smell, they surely should have checked this.


Hope This Helps!!!  Please Rate my Response!!! Thanks!!!
PREM

Posted on Feb 23, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2010 F150 Lariat. Dual climate control works only on passenger side. Rear temperature controls work fine. Driver side or left vents only blow hot air. Regardless if AC is turned on or temperature...


If the driver's blend door actuator has failed completely, or the wiring to it is damaged, you will not hear any clicking. Check for appropriate voltage at the blend door actuator, and determine from there if it's the actuator or the control unit.

Dec 20, 2016 | 2010 Ford F-150

1 Answer

My climate control only blows out cold air but the rear climate control works as it should


Could be the controller or a faulty blend door.
The blend doors direct air thru the heater core and evaporator along with the vents. The controller uses electric motors to change the direction of air flow.

Sep 28, 2012 | 1999 GMC Suburban

1 Answer

My ac was working fine then one day it stopped and now only hot air blows out the mechanic said the ac is fine and works good but there is a vent door that switches the ac to heater and he said it was...


There is a blender that controls the air flow to go through the heater core for heat, and the evaporator for AC. It very well could be stuck.

You maybe able to try and get it to get unstuck by running the cars AC and switching from heat to AC back and forth and see if it gets unstuck. Just turn it on full blast and go from heat to cool.

If that fails, then you may need to service it. There should be a Lever Marked VENT under the dash, usually by the Brake and other pedals on the Driver's Side. Close the VENT and that will stop the Air from coming in and leave the A/C Blowing through the outlets(Vents).

I also read this online if you have an electronic climate control. "On climate control press off and heat button and let go quickly. Then press automatic. The display will start rotating eventually displaying a code 025,125 , 024 etc. Then press defrost to stop. You may hear blend door operating atb that time. It worked for my climate control."

Jun 11, 2011 | 1996 Lincoln Town Car

1 Answer

1989 int. cutlass supreme-2.8lt- heater not blowing any hot air, fan works fine,def.,mid level, upper, lower functions work just fine when buttons pushed. When I turn the temp. control down to 60 the...


Your closing in. There is a motor that will open the heater core venting to allow it to blow into the car. Get a heater core install picture from your auto parts dealer or car dealer for specs of where and how it is driven.

Apr 17, 2011 | 1989 Oldsmobile Cutlass Supreme

1 Answer

I am looking for the A/C fuse for a Ford mustang gt 2002


manual system

  • Blown fuse(s):
  • Battery junction box (BJB) F26 (65A).
  • Central junction box (CJB) F33 (20A), F36 (7.5A), F37 (10A), F39 (20A), F45 (15A), F47 (15A), F58 (10A) or F59 (7.5A).
  • Blower motor inoperative.
  • A/C compressor inoperative.
  • Disconnected electrical connectors.
  • Engine cooling fan inoperative.
  • Damaged control switch(es) or climate control panel.
  • Circuitry open or shorted.

Electronic Automatic Temperature Control Module Self-Test
  • NOTE: The vehicle interior and exterior temperatures should be between 10° - 32.2°C (50° - 90°F) when carrying out the self-test. If the temperature is not within the specified range, false in-vehicle temperature sensor DTCs will be displayed.
    The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to continuous diagnostic trouble codes for concerns that occur during system operation.
  • The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
  • NOTE: The key must be in the RUN position to enter the self-test.
    To enter the self-test, press the OFF and floor position buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
  • If any DTCs are retrieved during the self-test, proceed to Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index.
  • If a condition exists but no DTCs are retrieved during the self-test, proceed to Symptom Chart.
  • To exit self-test and retain all continuous DTCs, push the blue (cooler) TEMP button. The module will exit self-test, retain all continuous DTCs and then turn off (display blank).
  • To exit the self-test and clear all DTCs, press the defrost button. The display will show 888 and all function symbols for one second. The module will then turn off (display blank) and all DTCs will be cleared.
  • Always exit the self-test before turning the EATC system off.
  • Continuous DTCs will be deleted after 80 ignition switch ON cycles after a continuous condition occurs.

Mar 28, 2011 | 2002 Ford Mustang

2 Answers

WHen we use the auto car starter, it blows cold air, and a lot of it. Its nearing the winter here in New England and I need to know how to set up the starter to blow warm air. Any ideas?


Start the vehcle and let it warm up then set all the controls to heater? Then turn off the car. Use the remote start to start the vehicle and check the controls are still set to heat mode.

Oct 02, 2009 | 2007 Chevrolet Impala LS Sedan New Cars

1 Answer

A/C air inop from upper vents


it may be the climate unit you can tap unit to see if it works or tap heater box see if it changes

Aug 20, 2009 | 2003 GMC Envoy

1 Answer

My climate control only displays celsius temp. how do I change it


there should be a button on the dash that reads E/M, depress that button once and should go back to English.

Jul 08, 2009 | 1998 Pontiac Grand Prix

2 Answers

I have a 2000 Dodge Intrepid 2.7L DOHC Engine - Climate Control


Might be the same....You may want to do the diagnosis proceedure. Alot of times its the door actuators. Servos in replace of old cable design. Usually it will be a code 46. DOOR BLEND ACTUATOR SHORT TO BATTERY.
The DTC's can be checked with the MTC control and the Odometer Display of the Mechanical Instrument Cluster if a DRBIII® scan tool is not available. The MTC control can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC control to the following settings:
  1. The engine must be running with vehicle not moving.
  2. The fan speed set to any speed except OFF.
  3. The temperature control knob in full cold (full counterclockwise position).
  4. The mode control knob must be placed in Defrost position (full clockwise position).
  5. The A/C button can be On or Off.
  6. Press and hold the rear window defogger (EBL) button until the mechanical instrument cluster odometer display indicates an "AC00". The BCM will chime once and the MTC A/C button LED will begin blinking.
  7. Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control door calibration is complete. NOTE: It is important that no other control knob or button is pushed until all DTC's are read. Pushing any button except the A/C button or turning a control knob will end the diagnostic test without showing the rest of the DTC's. There also may be other DTC's stored in the BCM not related to the climate control system. These DTC's can only be found using the DRBIII® scan tool.
    DTC's related to the MTC control head will appear on the odometer display in numerical form after the letters "AC". The odometer display will return to normal operation if no DTC's are found. If a problem is found, then the odometer will display the letters "A/C" followed by the DTC number. The odometer display can only show one DTC at a time. Under certain circumstances, more than one DTC could be in the memory. To scroll through any additional DTC's, press the A/C button on the MTC control. The BCM will beep each time the A/C button is pushed. Continue pushing the A/C button and recording the DTC's until the odometer returns to normal operation (note the letters AC will dissapear.

Jun 15, 2009 | 2000 Dodge Intrepid

1 Answer

Climate control display INOP


dude check the fuses in the bottom left of driver side , i had that issue and just changed the radio one to a bigger fuse and it turned right back on , it was strange ,

Jul 11, 2008 | 1995 Mazda Millenia

Not finding what you are looking for?
1995 Cadillac DeVille Logo

794 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

70374 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6878 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...