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Reset travel distance of heater blend door

How can I reset the travel distance on the heater blend door

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: Blend door

ok first put you front seat down and back raise steering wheel . now lay on you back with you head in the drivers floor board. look up see 2 screws remove them and the panel they hold on . look to left main wire harness needs to be moved to the right , up and behind it is th blend actuator 7/32 socket to remove it then manually turn the white peg , total labor 30 min

Posted on Dec 15, 2008

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SOURCE: 01 silverado blend door changed /now works back wards!!!

were the a/c blend door is located in 2002 chevy silverado

Posted on Mar 05, 2010

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The heat for my 2006 suburban doesnt work all three zones passanger,driver, and rear. Just blows cold air. Could this be an accuator problems if its all three zones? Or should I be looking at the...

Temperature blending doors might need a reset. Find the fuse and pull it for a few minutes. If that doesn't work you may need to replace the blend door actuator. Or your cooling system may be clogged.

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NO HEAT Complaint, -First of all check your coolant level, If OK Lets Remove the Passenger Glove Box, Look to your left you will see a Blower Duct Remove it, Look at the blend air door lever this controls the amount of Air traveling through the heater core and the AC Evaperator. Start your car and adjust temp, see if the lever is moving...If No then remove the blend air door motor but take note on the postion of the arm..although i like to go to hot totally or Cold totally then when i reinstall the motor i position the arm to match ...Fully Up is totally hot fully down is ice cold....!!! Open the blend air door housing and clean the contacts that travel on the large gear with a File or Sandpaper and wipe any collective grease that has maybe in excess...then put together put the plug into her and try lets see if the arm travels now......i have a link to see what we have just discussed ....
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Lack of heat is probably the blend door on the heater plenum. The motor only working on one speed is the blower motor resistor. The resistor is mounted on the plenum too, Look behind the glove box for the resistor and see if the blend door lever is there. It could be controlled by vacuum or other method. Move the heat control on the panel and see w hat is supposed to move. The lever on the blend door might be loose or broken..

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Could be the HVAC control processor is malfunctioning.Wtihout testing that would just be a guess .
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check to see if you have air trapped in teh cooling system first. If yes, burp it out by leaving the radiator cap loose and run engine until warm and see if air purges.

Are you sure gauge goes to NORMAL? If not, theremostat is suspect.

Finally, check to see if blend door in heater plenum travels the full distance. It oculd be stuck in the middle. Also, check to see if both heater hoses are hot going into and out of the heater core.

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2 Answers

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If your Grand Cherokee is equipped with dual climate control, then it sounds like your blend doors in the heater box have broke and aren't switching. I would bring it to your local Jeep dealer and have them look at the HVAC for blend door faults. Usually fault code 54 for blend door travel too large will come up. It is a rather expensive repair to have the blend doors replaced because they are part of the heater box and the dash has to be removed.

Best of luck

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if the blend air door keeps cycling even if the setting is hot or cold this tells you that the thermostatic control sensor is bad. replace that and the problem will be solved.......please rate this.

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1 Answer

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2 Answers

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