Question about 1999 Chevrolet Suburban

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1999 CHEVY SUBURBAN.A/C BLOWS FINE ON ALL SPEEDS,BUT FRONT VENTS ARE NOT COLD AT ALL,WHILE ALL REAR VENTS BLOW VERY COLD

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IT IS PROBLABY CLOGGED WITH SOMETHING TRY TAKING THE COVER OFF AND CHECKK IT.

Posted on Jun 21, 2009

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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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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.

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1 Answer

My heater don't work in my 1999 GMC Yukon all it dose it blow cold air


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I just don't get why that doesn't work right in the first place. ... I have 99 Yukon that has a problem with the front air. .... $55,000 for my GMC, I guess expecting cold air when we push A/C and getting 90 degree blast ... 2001 Yukon XL 1500 Front heat & air fine, rear ac blows hot as if heater is on in all settings. More results from forums.edmunds.com

Nov 18, 2015 | GMC Cars & Trucks

1 Answer

My climate control only blows out cold air but the rear climate control works as it should


Could be the controller or a faulty blend door.
The blend doors direct air thru the heater core and evaporator along with the vents. The controller uses electric motors to change the direction of air flow.

Sep 28, 2012 | 1999 GMC Suburban

1 Answer

2004 Chevy Suburban a/c and heating issues


see if theres power to the rear blower motor go under the rear and see if the one pipe is cold and the other is hot or at least warm if there the same then the rear system is plugged

Aug 17, 2012 | Cars & Trucks

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

1997 gmc rear air conditioner is blowing hot


Could be a blockage in the lines to the rear unit.
Might be low on freon too. Or a blend door problem.
Can you check under the floor and see if one of the lines is cold ?

Jul 04, 2012 | 1998 GMC Suburban

2 Answers

1999 Suburban, A/C on warm air from front vents, cold air in rear


The car uses the same freon in the front as it does in the rear. If the rear a/c is working, you either have a plugged evaporator in the front unit, or perhaps a bad heater switch. Try switching the heater to hot and see if it blows even warmer air from the front vents. If so, the heater switch is working and then it sounds like a plugged evaporator or maybe a plugged orifice tube. That is a good place to start looking. Hope this helps.

Jul 07, 2009 | 1997 Chevrolet Suburban

1 Answer

1999 CHEVY SUBURBAN,FRONT VENTS ON A/C NOT COLD ,BUT ALL REAR VENTS ARE VERY COLD.


I'm mainly a chrysler expert but did alot of gm & ac certified. I'd check the motor for that selection,not sure where it's located, but it's on the heater/ac box. You can check it for power but it's probably shot to be honest. They burn out alot in all cars. If that's not it, let me know & I'll go from there.

Jun 21, 2009 | 1999 Chevrolet Suburban

1 Answer

2003 suburban rear air works fine but won't blow heat.


This problem is caused by what is called the air temp control blend door, either the door is sticking in the duct or the electric actuator that moves it is defective, the actuator is the common part that fails, the bad news is the dash assembly must be removed to replace the parts.

Feb 11, 2009 | 1999 Chevrolet Suburban

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