Question about 1994 Cadillac DeVille

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Just brought used 94 cadillac deville ac works great but no heat

Ac works but when i press the button to make it warmer it stills runs ac no matter how hi i turn the heater

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I THINK YOURE CAR IS MISSING THE THERMOSTAT IT RUNS FOR ABOUT $15 BUCKS AND THAT SHOULD DO THE TRICK

Posted on Apr 28, 2009

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This is the the Cadillac Climate Control operates. When you press AUTO, the system will automatically maitain DESIRED temp . The A/C compressor will operate ALL THE TIME on AUTO. Don't want the a/c compressor to operate, PRESS " ECON". Air delivery will NOT be DE-HUMIFIED, nor will it cool, only warm,. Hope this helps.

Posted on Apr 15, 2009

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Need to turn air compressor back on

Posted on May 10, 2009

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Posted on Jan 02, 2017

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1 Answer

I HAVE A 96 DEVILLE. MY PROBLEM IS THAT MY FAN WILL ONLY TURN ON IF MY AC IS ON..WHEN NOT ON, MY CAR OVER HEATS...ALSO,THE AC ONLY COMES ON WHEN MY CAR IS TURNED ON AND IDDLING...


Temperature sendin unit needs replaced it sends a signal to the dash for temp and also to the fan switch. The ac is turning on the fan because, when ac is on the car would run warmer, so the ac switch is also connected to the fan. Are you saying that the ac kicks on when iddling or that's the only time you can turn it on

Jun 19, 2012 | 1996 Cadillac DeVille

1 Answer

How do I program a Cadillac 2004 Deville remote key fob?


came across this, maybe this will help out...this is for analog gauges....

With the ignition in the "RUN" position (engine does not necessarily need to be running, but it will work either way).
Press OFF and WARMER (or the OFF and PASSENGER WARMER buttons) on climate control panel simultaneously. Instrument Panel Cluster (IPC) will light all telltales, then go blank. System is now in DIAGNOSTIC MODE. After diagnostic mode cycles through and stops, press FAN DOWN button until "RFA?" is displayed, then press FAN UP. If "RFA DATA?" is displayed, press FAN DOWN. If "RFA OVERRIDE?" is displayed press FAN UP button.

If "RFA S00 NO OVERRIDE" is displayed, press FAN DOWN. If "RFA S01 PROGRAM FOB #1" is displayed, press FAN UP button.

IPC will show "0" on right side of Drivers Information Center (DIC) display. Press WARMER button on the climate control unit until "99" is displayed.

Press and hold TRUNK button on the transmitter. While holding TRUNK button, press LOCK button and hold both buttons for a total of 3 seconds. Locks will cycle when programming is complete. If transmitter is not programmed within 30 seconds after entering "99" on the display, system will default and you must begin at step #2 again.
To program second transmitter, press FAN DOWN button until "RF S02 PROGRAM FOB #2" is displayed, then press FAN UP. Repeat step #4.

To exit system, press AUTO, MODE UP, MODE DOWN, or RESET button.
__________________

Oct 30, 2010 | 2004 Cadillac Deville

3 Answers

'94 Cadillac DeVille Concourse. My winsdhield


Follow the wires from the blower motor back to the blower motor resistor, normally only a few inches away and held in by a 7 mm screw. Replace it

May 13, 2010 | 1998 Cadillac DeVille

1 Answer

I'm getting power to the back of my ac and heater but the digtal gage wont come on or blow what could it be


press the "off" and "warmer" buttons at the same time and see if the display gives you any codes.

Nov 17, 2009 | 1988 Cadillac Sedan DeVille

2 Answers

2002 Cadillac DeVille, AC/Heat blower not blowing out air


Have you tried smacking the blower motor? If it starts running after you hit it, replace it.

Aug 20, 2009 | 2002 Cadillac Deville

1 Answer

1997 cadillac deville concours stability reduced message


press and hold the off and red warmer button on your ac control panel / the display should then go into diagnostic mode.  all the trouble codes can be read out to help in tracing down the problem. you can also read out other info by pressing the temp up or down button when in diag. mode.   press the off button when your done.

Jan 22, 2009 | 1997 Cadillac DeVille

3 Answers

1991 cadillac deville NO HEAT


I had the same problem in my 1991 caddy, and turned out to be the blend door. It is located in back of the glove compartment. There are two kinds, the automatic blend doors and the manuel ones. Since the temperature is automatic and programmed to stay where it is set, it would be an "automatic blend door". Not a hard fix...

Oct 18, 2008 | 1991 Cadillac DeVille

1 Answer

94 deville


TRY CHECKING YOUR PCM CODES BY PRESSING THE (RED) BUTTOM YOU USE TO RAISE YOUR HEAT AND THE OFF BUTTON AT THE SAME TIME YOUR DASH WILL LIGHT UP AND DISPLAY A SERIES OF CODES.............

Sep 15, 2008 | 1994 Cadillac DeVille

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