Question about 2003 Cadillac CTS

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Why would cool air blow out the driver side and hot air blow out the passenger side on my 03 cadillac cts?

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Drivers side blend door motor or a clogged heater core can cause this. Most likely it is the motor. Some motors are on the back side of the plenum. Dash has to be removed. If it is your case, replace the heater core with it.

Posted on Dec 28, 2016

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This is caused by a defective air temperature control blend door actuator motor or a jammed blend door or in most cases both..

Posted on Dec 28, 2016

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Got a1997 cadillac deville got heat on passengers side no heat on drivers side could you tell me the problem.no defrost on drivers side either help please


DTC B1340 Air Mix Door #1 Movement Problem !
The heater and A/C programmer supplies voltage to an internal motor that drives the air mix door. The heater and A/C programmer monitors the air mix door position feedback from a sensor on the motor. If the air mix door is requested to move but the feedback voltage does not change, the heater and A/C programmer will store DTC B1340. If the air mix door feedback indicates that the feedback is near the hot or the cold extreme, the DTC will not set. Evaluate the operation of the air mix door through self diagnostics as described in the test description.
Test Description
Perform the Diagnostic System Check before continuing with the diagnosis of this DTC.
A Scan Tool allows for the direct control of the air mix door by observing the following conditions:
• The air mix door position feedback value
• The value`s difference from the air mix door commanded position value
These readings indicate a fault internal to the heater and A/C programmer in the air mix door sensor feedback.

Did you perform the Diagnostic System Check?
--
Go to Step 2
Go to Diagnostic System Check
2
With the engine running, connect a Scan Tool .
Turn the dual zone to OFF (passenger temperature offset at 0 or OFF).
Exercise the suspect actuator using the temperature control on the control assembly.
Is the door being commanded (COM) to the proper high and low values?
COM High 100 %
COM Low 0 %
Go to Step 3
Go to Step 4

If you are unfamilier with this , i suggest you take it to a ASE certified repair shop or the dealer .

Jan 25, 2016 | Cadillac Cars & Trucks

1 Answer

I have a 2003 Tahoe and when I put the heater on only the driver side get warm passenger side blow cold air


2004 Chevy Tahoe. Hot air out of vents on driver's side, cool ...

answers.edmunds.com > Edmunds Answers
Jun 25, 2009 - Hot air from vents-driver side and cool air from vents on passenger side. ... The driver's side vents were blowing out hot air, and everything else wasblowing cold. ... you'll literally have to restart your tahoe/yukon at every traffic light to keep cold air coming ... I was also getting air only out of the defrost vents.

Hot air out front drivers side vents 05 escalade - YouTube

? 3:14
https://www.youtube.com/watch?v=5lnd8UNcx6M
Aug 3, 2013 - Uploaded by South FL Mud Club
Suddenly hot air started blowing out the air vents only on the drivers... ... is a very helpful video ,I wondering if this part number apply for my 04 chevy tahoe? .... I have cold air out of thepassenger side, but warmer air out of the driver's side. .... 2003 Tahoe No Rear Heat Fix, Suburban, Yukon XL Repair!

Heating and AC Temperature and Air Delivery Mode Door ...

repairpal.com > Problems > Chevrolet > Tahoe
Driver/passenger air vents blow hot then cold when using A/C. Back to cold when you restart the vehicle. Upvote (35) ... 2003 Chevrolet Tahoe ... I have a 02 Tahoe ,and the heat system is working only on the ceiling side of the car when turn.

2004 Chevrolet Tahoe Blows Hot Air - Sparky's Answers



Jan 21, 2016 | Cars & Trucks

1 Answer

Hot air from drivers side cool air from passenger side


Driver's side blows hot air; passenger side cold air - Hyundai ...

www.hyundai-forums.com/.../294097-drivers-side-blows-hot-air%3B-pa...
Jul 29, 2014 - 3 posts - ‎3 authors I soon noticed that the driver's side blows warm air and the passenger side blowscold air as it should. No amount of adjusting the temp control ...

Hot air on driver side vents - Cold on passenger side - Page 3 ...

www.odyclub.com/.../46646-hot-air-driver-side-vents-cold-passenger-si...
May 9, 2012 - 16 posts - ‎10 authors I have a 2009 EXL Odyssey that just is doing the same thing (warm air on drivers side, cold on passenger). I checked freon levels and ...

Oct 15, 2015 | 2009 Hyundai Sonata

1 Answer

2009 cadillac esalade hybrid passenger side cold air


Check behind heater control for vacume leak to actuator or use a vac. pump on the actuator to see a difference.

Dec 02, 2013 | 2009 Cadillac Escalade Hybrid

2 Answers

Cadillac CTS overheating while sitting still


Hi,It sounds as though the radiator is blocked.the heater might be opening letting in hot air which will over ride the cool air.

May 24, 2013 | Cadillac Cars & Trucks

1 Answer

2003 Cadillac Cts No Heat On Driver Side. Passenger Side Works Fine


you have a bad stepper motor or bad control unit

Jan 27, 2013 | 2003 Cadillac CTS

1 Answer

2003 cadi cts - heat only works on drivers side and cold air on passenger side - blower works fine - what might be the problem?


Check operation of passenger side air direction deflector vane in the heater ducting.
You may have a seized vane hinge or faulty actuating servo/control.

Oct 29, 2009 | 2003 Cadillac CTS

1 Answer

Driver side vent is blowing out hot air,passenger side is blows out cool air


Damper/flap for driver's side is probably stuck. Try moving the selector from cold to hot several times. Also, move the recirc/outside air control if the previous doesn't work.

Jun 01, 2009 | 2004 Isuzu Ascender

1 Answer

Hot air blowing out on passanger side only, 03 Cadillac CTS


junk it its not worth it one of the sensors that open and shut the door are bad

Jan 28, 2009 | 1999 Jeep Grand Cherokee

1 Answer

A/c and heater


Is it leaking antefreeze?
The thermostat might be gone or needs a bigger thermostat
It could be a vaccum leak for the drivers side blowing cool air and the passenger side blowing warm air
Does it have dual air control switches one for drivers side and one for passengers side?

Oct 28, 2008 | 2003 Pontiac Grand Prix

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