Question about 1992 Cadillac Seville

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92 cadillac seville- fan will not work- I checked all of the fuses and relay- I think it maybe the blower- No heat or air- Also the rear defogger is not lighting up- All the buttons are on the same pad- Could it be a sensor- Has the digital dash which works great

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Definetly your blower but for whatever reason thats not it maybe a vaccum leak.

Posted on Jul 21, 2009


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My heater only works some of the time and my rear defrost dont work what could be the problem

As by heat only works some of the time , you mean it doesn't blow air out of the vent's . This means you probably have a problem with the blower motor or blower motor resistor or blower motor relay .
Rear Window Defogger Inoperative

    Exchange the rear defogger relay with a known good relay from the under hood junction block.
  1. Turn the ignition switch to the ON position.
  2. Press the rear defogger switch to the ON position.
Does the rear defogger grid warm?
Yes Go to Step 2
NO Go to Step 3


Replace the faulty relay.
Is the repair complete?
Go to Defogger System Check --


  1. Use a fused jumper wire in order to backprobe between terminal A4 of underhood junction block connector C3 and ground.
  2. Use a test lamp in order to backprobe between terminal C5 of underhood junction block connector C3 and ground.
Does the test lamp light?
Go to Step 4
Go to Step 23


  1. Use a test lamp in order to backprobe between terminal C5 of underhood junction block connector C3 and ground.
  2. Press the rear defogger switch to the ON position.
Does the test lamp light?
Go to Step 5
Go to Step 14

Mar 23, 2016 | 1999 Oldsmobile Alero

1 Answer

I have a 93 Cadillac Deville when I turn on the heat it blows a 10 amp fuse and the transmission stops changing gears. What is wrong?

4504204 A/c blows fuses - Document Download
4504204 a/c blows fuses ive had feron checked replaced a/c relay fuse last about 10 ... I have a 2006 impala that is blowing the 10 amp fuse to the ac/compressor/a new will last ... 93 corolla 1.8 No start Blown ignition fuse ... i have a cadillac deville the a c blows hot air on ... air con fuses air con heating mk3 mondeo talkford.

Blower Motor Problems ' Auto Repair Help - YouTube

? 4:22
Sep 27, 2009 - Uploaded by mgittelman
I have a 1996 Cadillac DeVille that the blower motor stays on unless you unplug it. ... +mgittelman hi mate ...

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Nov 3, 2006 - 91 Fleetwood "check engine" light, 10/31/2006, Tom Joy ... Q: My 95 Deville blows air when the heat is on, but the air never warms. ... 96 Deville Interrior Lights Inoperative & 3.2 Amp Draw on Body Fuse 3. ... Q: I have the 93 cadillac deville and those codes came up right after a transmission replace.

Cadillac Seville Questions - Heating/AC fan runs when car ...

Jan 10, 2016 | 1993 Cadillac DeVille

1 Answer

I have a 92 cadillac seville heat is hot on passenger side luke warm on driver side. blower sounds to be running properly but not alot of air flow, flushed out heater core and radiator

you simply have an electrical relay problem or a stuck door in your vent not allowing the flow to be equal ..I have found all kinds of issues like a small toy or something that was somehow dropped into the vent area ..also once i opened some duct work and pulled out dead mice ..I know ewww ..good luck

Oct 26, 2013 | 1992 Cadillac Seville

1 Answer

94 318i heat blower out

remove the fan motor cover and check the wires on the fan motor 99%chance that one is burnt off

Feb 04, 2013 | 1997 BMW 3 Series

1 Answer

No air flow for heat and A/C

It would be unlikely that a heater core - a/c blower would be running or supposed to run a 30amp fuse, a 10 amp would be sufficient for that curcuit, or it could overheat the wiring in a fault.

Trace the wiring back, check for power from the fuse and trace it down to the fan, to check the fan run power into it and see if it operates.

Check the fan resistor.

Feb 26, 2018 | 2002 Cadillac Seville

3 Answers

Where is the radiator fan fuse?

under hood fuse/relay box - #13 7.5 AMP fuse, controles Power mirrors, ABS system, Air delivery, Blower motor relay, Rear window defogger relay, Radiator fan relay, Condenser fan relay

#13 is top row of fuses 3rd from left side.

Radiator Fan Relay located right Rear Corner of Engine Compartment
3 black relays in a row, radiator fan relay 1st one on left side of box

Feb 10, 2010 | 1994 Honda Civic

1 Answer

1999 sts seville fan motor will not come on i dont have a book have no heat no air tried replacing a/c controler wasn't that. Please let me know if you have answer Thanks

The most comon cause of this failure is the heater fan resistor. the next would be the High blow relay. and after thet the fuse or power and ground to the relay. of corse check the fuse first cause its the easiest.

I hope this helps,

Nov 30, 2009 | 1999 Cadillac Seville

1 Answer

How do u change fan relays on a 92 seville 4.9l.

the fan relays are in with the other relays in the relay box,check the coolant sensor,or just replace it.If you turn on the ac,will the fans come on?If so,the relays are sure the coolant level is fine,and there is no air in the cooling system.This,along with the coolant sensor are the main causes for this problem.Is the cooling fan fuse good? I hope this will help you.

Oct 06, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

No blower/fan at any time car running or not.

check fuse. if ok. replace blower motor.

Feb 24, 2009 | 1995 Cadillac DeVille

3 Answers

Climate controll inop. on 95 devile

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

Feb 23, 2009 | 1995 Cadillac DeVille

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