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2003 Cheve Suburban. Heat in back seat wont heat up. Have heat in front but cold in back. What could be the problem? Back has own controls, fan works, does not get warm!

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  • 71 Answers

Mode door actuator. Very common.

Posted on Oct 26, 2013

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Posted on Jan 02, 2017

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SOURCE: heated driver seat doesn't heat on 2003 ford explorer

this is a common problem if you use the seat heater alot.one or both of the seat heater elements will have burned up or broken.where i live it is very cold most of the time and i have replaced hundreds of the seat heater elements.it is rare for it not to be one or both of the elements.

Posted on Nov 14, 2008

  • 5 Answers

SOURCE: 2003 escalade rear climate control no heat just cold air.

there are two separate actuators for the rear system. one controls temperature and the other controls vents from head to feet. mine problem was the later. that acutuator for esv 2003 is 89018365. it is located just below third seat cup holder passenger side and can be replaced simply by removing cup holder. triangular shaped part with wire harness.

Posted on Jul 11, 2009

  • 7353 Answers

SOURCE: 2003 Suburban---Heated leather seat problem

there may be a software issue, there is a reprogram for seat heater issues. Bulletin 05-08-50-008 may pertain to that, a AC DELCO Shop or the dealer can ck that and see if this bulletin applies.

Posted on Sep 29, 2009

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2 Answers

I have a 2003 chevy tahoe Lt the air works in front and with back controls but heat is only working in the front it blows with back controls but puts out no heat what causes this?


Your climate system can only cool or heat but not both. The temperature has a big effect on this. The cooling needs the compressor.

Apr 02, 2015 | 2003 Chevrolet Tahoe

1 Answer

2003 Pontiac Montana heat gets hot in front, blows but seems weak, and no heat on rear controls but blows ******* rear. what is going on?


Is your heater blower motor working on all speeds ? Are you get any air coming from the rear vents ?

Feb 25, 2015 | 2003 Pontiac Montana

1 Answer

2004 CHEVY SUBURBAN FRONT A/C WORKS BUT THE REAR DOESN'T TURN ON


There is a blower motor control processor for the back blower - it takes input from the front control and the rear control and decides the fan speed. That processor could be faulty, or the blower motor, or a 30amp fuse in the engine compartment.
In the front system you have a controller and blend doors that direct air thru the heater core and evaporator. You would need to check the operation of those blend doors.

Aug 17, 2012 | 2004 Chevrolet Suburban

1 Answer

No heat to back seat, chevy tahoe


what about the front vents are they hot or cold
it the front is hot and the back is could
you need to check the heater control valve
maybe even the vaccum line that controls it

Jan 10, 2010 | 2003 Chevrolet Tahoe

1 Answer

2003 ford expedition front heat and air work, but rear puts out cold when its cold out and heat when its hot out, no matter what setting.


there are 2 blend doors in back on the passenger side rear. one controls heat settings and the other mode floor or upper vents. These go bad and there is usually a clicking noise.

Nov 10, 2009 | 2003 Ford Expedition

2 Answers

2003 winstar no heat


Check the operation of the temperature control door. It is located in the center of the dash behind the radio. Look up between the gas pedal and heater case. It is white in color Move the temp knob while watching the actuator. If it is clicking it is bad. Good luck.

Oct 12, 2009 | 2003 Ford Windstar

2 Answers

2003 Suburban---Heated leather seat problem


there may be a software issue, there is a reprogram for seat heater issues. Bulletin 05-08-50-008 may pertain to that, a AC DELCO Shop or the dealer can ck that and see if this bulletin applies.

Sep 29, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

Ford Windstar SE, 3.8L V6, 1999, front seat heat/defrost is cold


the blendor actuators strip out the gear inside the actuator cases on these all the time. replace the actuator.

Mar 10, 2009 | 1997 Ford Windstar

2 Answers

Problem: Ford Windstar SE, 3.8L V6, 1999, front seat heat/defrost is alway cold with engine warm and heater turned on. Symptoms: 1) When (engine is warm and) front seat heat temp slider is moved from...


I would think the door you hear flapping is the door that controls the airflow across the heater coil - and the fan keeps blowing the door closed, preventing the airflow from going across the heating coil. I don't know whether this vehicle is vacum controlled or cable controlled - so either it's a disconnected cable, or a leaking vacum line.

Mar 10, 2009 | 1997 Ford Windstar

2 Answers

2003 escalade rear climate control no heat just cold air.


there are two separate actuators for the rear system. one controls temperature and the other controls vents from head to feet. mine problem was the later. that acutuator for esv 2003 is 89018365. it is located just below third seat cup holder passenger side and can be replaced simply by removing cup holder. triangular shaped part with wire harness.

Feb 25, 2009 | 2003 Cadillac Escalade Esv

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