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Registered
2005 deville
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4 Posts
Discussion Starter #1
I have read a lot of the forum posts concerning heating on one side and cooling on the other (which is my issue) but i cant find anything on the heater control valve. Im not sure how they control water flow into the core on these vehicles but surely there is a valve somewhere. We live in Texas and wont need the heater for a while. I was just thinking it would be easier to manipulate the valve than bypass the core. thanks
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,287 Posts
I have read a lot of the forum posts concerning heating on one side and cooling on the other (which is my issue) but i cant find anything on the heater control valve. Im not sure how they control water flow into the core on these vehicles but surely there is a valve somewhere. We live in Texas and wont need the heater for a while. I was just thinking it would be easier to manipulate the valve than bypass the core. thanks
===========================
I have read a lot of the forum posts concerning
heating on one side and cooling on the other
(which is my issue)
which is the problem? - heating or cooling?


Im not sure how they control water flow into the core on these vehicles
but surely there is a valve somewhere.

NOPE -
hot coolant constantly flows - unrestricted - through the heater core -

cabin temp is controlled through a combination
of driver side and passenger side MIX doors -
along with the outside - recirculate - air door -

was just thinking it would be easier to manipulate the valve than bypass the core. thanks

why not diagnose the real problem - and fix it?

-------------------------------

check for Diagnostic Trouble Codes -
if you don't know how - go here and read the ENTIRE post -

http://www.cadillacforums.com/forums/cadillac-deville-1985-2005-including-1985/138257-how-pull-codes-dtcs.html

if you have any codes - post them here -
ALONG WITH THEIR DEFINITIONS -

------------------------------

all the Climate control actuators are monitored by the computer -
if any actuator failed - a fault code will be set -
 

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Registered
2005 deville
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4 Posts
Discussion Starter #3
Hello Basscat,
thank you for your reply and the info.

which is the problem? - heating or cooling? cold on driver side with a/c on and hot on pass side with a/c on.

why not diagnose the real problem - and fix it? I had diagnostics run and the codes showed a bad actuator (i believe was the part description) and the mechanic said it would be the hardest to get to out of three and a costly job. If this car makes it through the summer it will probably be done.
Is the Heater Blend Door Actuator easy to access? and can it be manipulated? Thanks

Edited to add quote box
Ranger
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,287 Posts
Hello Basscat,
thank you for your reply and the info.

which is the problem? - heating or cooling? cold on driver side with a/c on and hot on pass side with a/c on.

why not diagnose the real problem - and fix it? I had diagnostics run and the codes showed a bad actuator (i believe was the part description) and the mechanic said it would be the hardest to get to out of three and a costly job. If this car makes it through the summer it will probably be done.

Is the Heater Blend Door Actuator easy to access? and can it be manipulated? Thanks
=================================
I had diagnostics run
run your own diagnostics -
it takes less than two minutes to run codes with the built-in scanner -
use the link from the other post to learn how -

the codes showed a bad actuator
(i believe was the part description)

there are three MIX DOOR ACTUATORS -
#1 = Driver Side Actuator -
#2 = Passenger Side Actuator -
#3 - Rear Seat Actuator -
along with a Recirculate Door Actuator -
and a MODE Door Actuator -

I assume you have a #2 and probably #3 actuator faults -

the mechanic said it would be the hardest to get to out
of three and a costly job.

the "mechanic" is an IDIOT -

the #2 actuator also controls the #3 rear seat temp -
it is actually the EASIEST to replace -
simply remove the glove box - it is right there -

the part you need is ACDelco 15-73428 - $56.82 - with free shipping -
http://www.amazon.com/gp/product/B001S8G8Q8/?ie=UTF8&me=ATVPDKIKX0DER

there is a HowTo in the TechTips forum -
http://www.cadillacforums.com/forums/cadillac-tech-tips-how-fix/486513-2002-deville-air-temperature-actuator-replacement.html

 

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Registered
2005 deville
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4 Posts
Discussion Starter #5
Thank You Basscat.
I appreciate your input. one of my hands will follow through on this tomorrow.
you should not hold back in your thoughts just speak your mind lol.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,287 Posts
Thank You Basscat.
I appreciate your input. one of my hands will follow through on this tomorrow.
you should not hold back in your thoughts just speak your mind lol.
------------------------------------
you should not hold back in your thoughts just speak your mind

OK -

one of my hands will follow through on this tomorrow.
why not do it yourself? -
scarred? :suspense:
 

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Registered
2005 deville
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4 Posts
Discussion Starter #7
yes scared and I pay much more talented people than me. I do like people who speak their mind, you would do well in politics lol.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,287 Posts
He wouldn't last a day in politics. Politicians tell people what they want to hear.

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You're gonna love Bass.
=====================================
thanks - :suspect: I guess -:hmm:
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,287 Posts
Are there any particular tips on the installation?
===========================
Are there any particular tips on the installation?
installation of - - - WHAT? :hmm::noidea:
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,513 Posts
Plenty of How-to advice in the Tech Tips forum. What year Deville are you working on ?

Google "cadillac forums 2000 - 2005 deville hvac blend door actuator" or something close.

If the small bullet next to a username is not highlighted with color then the member is offline.
 
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