Question about 2003 Chevrolet Tahoe

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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?

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2 Answers

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  • Chevrolet Master
  • 1,179 Answers

Sounds like your blend door control has gone out,
Had same problem with our Suburban, pain to get to but relatively cheap

http://www.bing.com/images/search?q=2003+chevy+tahoe+lt+blend+door+rear&qpvt=2003+chevy+tahoe+Lt+blend+door+rear&qpvt=2003+chevy+tahoe+Lt+blend+door+rear&FORM=IGRE

Posted on Apr 02, 2015

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  • Chevrolet Master
  • 3,368 Answers

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

Posted on Apr 02, 2015

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Posted on Jan 02, 2017

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SOURCE: 2001 tahoe front heater not working, rear heater blows warm air

Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.

Posted on Jan 18, 2009

  • 507 Answers

SOURCE: 2003 chevy tahoe no rear heat

I know the earlier tahoe's have two heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are two metal lines that turn into rubber and back into metal again farther down the line. First, checked for pinched lines. If none, find where the rubber hoses are, clamp them off, remove from metal lines and drain. Use garden hose to flush fresh water through. When water comes through at high pressure and pretty clear, it should be done. Reconnect hoses, top off radiator fluid and it should be fine.

Posted on Feb 21, 2009

  • 1 Answer

SOURCE: 2003 Chevy Tahoe

Its probably the temperature actuator located in the right rear interior

Posted on Mar 07, 2009

  • 580 Answers

SOURCE: 2003 chevy silverado 1500HD LT. A/C fan works intermittently

First check fuses, then test blower motor, Last Temp control switch

Posted on Jul 21, 2009

  • 540 Answers

SOURCE: 2005 tahoe no air blowing

as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..

Posted on Oct 13, 2009

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1 Answer

What is the most common reason for a 2003 Chevy Tahoe LT 4 wheel drive to have cold air blowing with no heat or defrost


Low coolant. Fill it, leave the cap off and get the engine to operating temperature. The coolant will fall refill it and put the cap of. Let the pressure build up and check for leaks.

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


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1 Answer

Passenger side blows cold air--what part could it be


2001 Chevy Tahoe Heat Problem - Tahoe Forum

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Dec 5, 2008 - 10 posts - ‎7 authors 2001 Tahoe, the front heater blows a little hot air when the car warms up and then blows cold air. The rear heat seems to work fine. I changed ...

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On my wifes 03' Yukon the rear air conditioning blows hot air no .... Pull the panel off and look at the hot/cold actuator shown in the picture.

Oct 30, 2015 | 2001 Chevrolet Tahoe

1 Answer

2003 Chevy Tahoe Front AC blows cold air but rear does not blow cold air


Check control switches, power and grounds, and the 'blend door' operation. If you have a 'no heat' condition throughout the vehicle you should look to make sure the heater core is not plugged, and that the thermostat is operating properly, and that the coolant/antifreeze level is within spec.

Oct 28, 2013 | 2003 Chevrolet Chevrolet Tahoe

1 Answer

Chevy 2005 tahoe z71 blows cold air in back but hot air in front


Just got an answer from Chevy Dealer. When you replaced the battery it loses its memory as to where the door actuators were (the flaps that control the heat and A/C).

The fix:
Turn everything off and let the car sit overnight. The computer should reset itself during its learnings process.
In the morning turn on the ignition and let the car run for a few minutes before turning on the climate control.

If this doesn't work, plan on 1-1.5hours of labor for a technician to reset the actuators at the dealership.

Good luck.


Car Headlights.

Jun 01, 2012 | 2004 Chevrolet Tahoe

1 Answer

HEAT IN MY 2003 chevrolet tahoe WORK IN THE FRONT BUT in the back it says cold. it blows great just does not get hot....


on most tahoe and yukon its only rear air and not rear heat my 99 yukon has only rear air

Feb 25, 2011 | 2003 Chevrolet Tahoe

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

2 Answers

1996 Chevy Tahoe air conditioning not blowing cold air


That "thing" is part of the compressor clutch. When it’s spinning the clutch is engaged, when it stops the compressor is off. If it’s constantly cycling, you probably don’t have enough freon in the system. But remember, however the gas escaped before, it will escape again, unless you fix the leak.

Jul 14, 2009 | 1996 Chevrolet Tahoe

1 Answer

2001 tahoe front heater not working, rear heater blows warm air


Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.

Jan 18, 2009 | 2001 Chevrolet Tahoe

1 Answer

2005 Chevy Tahoe


THE PROBLEM IS NOT A FUSE, IT IS THE REAR SEAT AIR TEMPERATURE CONTROL BLEND DOOR THAT IS CAUSING THE PROBLEM.

Nov 23, 2008 | 2004 Chevrolet Tahoe

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