Question about 1994 GMC Suburban

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1994 chevy suburban ac heat blend door broken

Does the door need to be open or closed for the ac to work properly

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Needs to be closed.

Posted on Jun 18, 2009

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Blend door on 2003 montr carlo


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Dec 26, 2015 | Chevrolet Monte Carlo Cars & Trucks

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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?


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

Where is the left blend door actuator located on my 2009 Chevy Suburban?


should be in the center part of the dash look under from the drivers side floor board close to accelerator pedal looking up should be mounted on the side of heater a/c box

Sep 09, 2014 | 2009 Chevrolet Suburban

2 Answers

Heater doesn't get hot on 96 chevy truck. Blows good, just cold. Replaced thermostat, flushed radiator. Any ideas?


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Dec 06, 2012 | Cars & Trucks

2 Answers

NO HEAT STUCK ON AC HEAR CLICKING IN CENTER CONSOLE


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Nov 05, 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

When i turn the heat on it makes a clicking sound, and it blows out cold air, but when i turn cold temp on the clicking sound stops, until heat temp is turned back on. please tell me how to fix this...


Your ac blend door is broken or the actuator that opens and closes the door is broken. The ac blend door moves up and down to direct air flow through the heater core(for heating) or evaporator core(for cooling).

When the door mechanism breaks, the blend door falls down and you will only have ac but no heating.

You can buy a ac blend door kit for your explorer, they cost about $120 on ebay or other places.
search for Explorer ac blend door kit.

The duct is under the the dash on the drivers side. And you will have to cut open the duct to install the replacement door.

Heres a link to a tutorial of how to do the job.

http://www.heatertreater.net/Ford%20Explorer%2002-08.html

Sep 19, 2011 | 2004 Ford Explorer

1 Answer

Damper is stuck in closed position for heat/AC. How do I open the damper. Fan works fine. 1998 Chevy Astro Van


I belive this year has the electric actuator thatcontrols the blend door, you will ned to unbolt it and turn door then reinstall actuator to hold door in that postion, this is located on heaterbox.

Aug 29, 2010 | 1998 Chevrolet Astro

2 Answers

I have a 1994 chevy suburban, when I start the truck the AC blower motor clicks for a few minuets than qiuits, it also clicks when I shut the truck off, but the air comes out the vents just fine


Replace the blower blend door actuator https://www.partshighway.com/product.php?productid=104135&cat=0&page=1&basevehicleid=&legacyvehicleid=&catid=&partterminologyid=&partnum=RNB-604-103

Nov 14, 2009 | 1999 GMC Suburban

1 Answer

2004 suburban rear a/c only blows hot air


ase mechanic:
there are separate actuators for the blend doors. one for heat and one for cool. they work opposite and in conjuction with each other, if that makes any sense. ones open, ones close, for each different climate. sounds like the the cold one isn't opening in the rear.

Jan 27, 2009 | 2004 Chevrolet Suburban

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