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Got a 2014 chevy 2500hd 6.0 and when i start my truck the a/c outside air button is automatically on. I have to push recirculate button every time i start my truck. Also when its on outside air it only blows hot air but when i push the recirculate button it gets cold. Can someone please help me with a fix?? 

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This maybe a dumb question, but I have to ask. Is your A/C button on when the fresh air mode is selected? When you select recirc, it automatically engages your compressor regardless, so that's why I ask.

 

Also, it switching to fresh air whenever you turn off the truck is a default function. They all do this. 

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In very hot areas in town and just getting started you’ll need it on max. After driving awhile you can switch to outside air. Usually when driving in town and stop and go you need to go back to recirculating or max. My Camry is just the opposite it defaults to max-recirculating even at low fan speed. Once I get moving and cooled down I’ll switch to outside air. I’ll usually have to increase fan speed or lower temp to combat outside air coming in.


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3 hours ago, Boeufriverkennels said:

Yes sir the A/C button is on.

Okay, cool. Have you checked if the compressor clutch is engaged in this mode? If not, it's possible your controller could be faulty and only engaging the compressor in recirc mode. Keep in mind I'm just spit-balling ideas at this point and suggesting things to check off the list :) 

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