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Discussion Starter #1
2001 Deville, the air on the driver side blows out warm air and the passenger side blows out cold air, what could be the problem?
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,783 Posts
If you are in A/C mode, you're probably a little low on refrigerant.
 

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2001 Cadillac Deville
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25 Posts
Hi the same thing happened to me and it was low refrigerant. It needs to be topped off. If it's not you will end up having the same problem.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,272 Posts
2001 Deville, the air on the driver side blows out warm air and the passenger side blows out cold air, what could be the problem?
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the FIRST thing you should do is to
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 -

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if you have no codes pointing to the MIX door actuators -

connect a set of AC gauges and post the pressure readings -
along with the ambient air temp -
 

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2003 Deville base
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258 Posts
I just had the exact same problem last week I only had a half a pound of freon filled it up and the AC is freezing cold on both sides now
 
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