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My passenger side blend door won't change form cold to hot need to know the location and what the part looks like

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I don't know the specifics of your vehicle. However, this is generally a result of a cracked or broken vacuum line. This is what I would try if possible for u to do so. If you have someone who can help switch the heater from cold to warm inside the vehicle. Raise the hood if the vehicle and listen for hissing air. This would definitely be your problem. I have actually made temporary repairs to cracked or broken vacuum lines with tape. Usually the cracked line will be found close to the cowl or fire wall. This will be the part of the engine compartment that runs directly below the windshield. All though rare sometimes this issue occurs under the dash as well but di to the extreme temperature changes under the hiid this us where it is most likely to be. Keep ur fingers safe and away from moving parts. Sometimes u can feel what u cant hear. Hope this helps and good luck.

Posted on Nov 09, 2014

Testimonial: "My car is a 1992 Buick regal custom 3.8 I think it is the blend door actuator"


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Posted on Jan 02, 2017

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SOURCE: cold air on passenger side warm air on drivers side

Actuator motors either get a tear in the rubber or a hose is broken and not letting vacuum assist in its opening.
You can try moving the lever by hand and see if the air gets colder on the bad side.c976077.jpg

Posted on Aug 04, 2009

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SOURCE: Replace Blend door on 2004 Suburban

My problem is hot air on the drivers side, cold on Pass when the AC is on...2004 Sub

Posted on Nov 06, 2009

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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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SOURCE: Blend door stuck on heater position and driver

I had this exact problem in a 2000 and it ended up being the air filter (engine compartment, pasenger side cowl)-all I did was replace it and both sides worked properly-you could try removing it and see if that solves it, if not I would think either the climate controller has a problem (vacuum line?) or maybe the blend door itself needs to be adjusted-hope this helps

Posted on Jun 26, 2011

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