Front Air Blows Hot/ Rear Air Blows Cold

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CaliChevy_916

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Hello All,

I'm new to this forum so please forgive me if this problem has been discussed already. I kind of read a few post and never seem to get a solid answer.

Here's my problem. I have an 02 Tahoe 5.3 and my front air a/c is blowing hot air while my rear unit still blows cold air. I checked to see if it needed to be recharged and that seems fine. I checked to see if the compressor was turning on and that seemed fine. The only thing I can think of is if it's the temperature valve actuator. I read that there are three (driver side, passenger side and one deep in the dash). For the issue that I am having, which one controls the front temperature? Or does this even sound like the correct fix?
 
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