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Matthew Owen Posted on Jul 10, 2015

2001 Cadillac Deville DHS rear ac in back seat control sometimes blows cold sometimes blows warm air...

...My question is what could it be, and why sometimes cold and sometimes warm? Both front driver and passengers AC works fine.

5 Related Answers

Carlos Rojas

  • 119 Answers
  • Posted on May 22, 2008

SOURCE: Problem with AC, dual climate zones

The temperature blend door on the driver's side might be broken or stuck. Also, if this vehicle does not have the correct amount of refrigerant, it will do what you are describing.

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Anonymous

  • 255 Answers
  • Posted on Jan 04, 2009

SOURCE: 1998 cadillac deville reads service ac system

Hi,check if the compressor clutch is engaging,if not check the conection at the compressor if ok check,fuse ,or relay ,if those are fine and the commpressor is engaging,check freon presure ,may be too high or low, if this is the case ,correct the problem and disconect the negative cable from the battery for a minute to reprogram the sistem..C1

Anonymous

  • 1 Answer
  • Posted on Jan 07, 2009

SOURCE: 2004 escalade ac problem

I had the same problem. Took it to an AC guy and they told me it was going to cost $1,400 to replace all kinds of parts. I didn't get it done right away because I went on vacation. When I got back from vacation the air blows cold. It hasn't gone back to blowing hot since.

Anonymous

  • 1 Answer
  • Posted on Feb 24, 2009

SOURCE: top rear vents blow out cold air[ 2005 cadillac srx ]

Hello according the the manual, the back vent are to blew cold air only..the fronts vents are suppose to the entire car...

honeymokey

honeymokey

  • 3113 Answers
  • Posted on May 09, 2009

SOURCE: Cold AC but weak Airflow---Also Driver side not as cold as passenger

The air doors are controlled by actuators that on of them or so may need replacing.

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Related Questions:

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Why is my rear climate control blowing out cold air only and not heat.

If the front one is working fine, that means you have a flap actuator problem for the rear or bad therm device.
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Why my ac in my cadillac deville 1996 blows hot air?

If your low on freon then the A/C wont come on? for a 1996 you will need to get it serviced if you havent its normal to loose 10% freon a year,
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Where is the battery stored on the DHS model?

Right rear of the passenger compartment, under the rear seat
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Air blend doors do not work. Air blows from defroster vents

check or loss of vacuum to mode control switch in dash ac control. these are not blend doors, they are air flow control, a blend door controls the air temperature not where it comes out.
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97 Deville cooling

Hmmm... its gotta be the compressor.
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Air Conditioning

Try changing the lower temp sensor in the air duct on the drivers side. I bought one and never replaced it. before the part arrived I took the lower sensor out and taped it up and put it back under the dash... not in the air duct housing were it belongs. believe it or not it works so well I did not even see a need to change the thing.
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