problem heat/ac control panel heat blowing on drivers side cool on pass side on 2006 Chevrolet Silverado 2500 HD

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replaced control panel and it is doing the same thing. I have owned many chevy's and this truck has been a lemon. I'll never buy another one! $ 136.00 later and still no ac, how do you fix this problem?
(2) Answers
(1) Comments
Need more info. What was done for $136? I agree w/ globalhelper could be a blend door malfunction. Provided that the truck has the correct amount of refrigerant.
I bought a new controlpanel and same problom 1trough4 blows air 5 dont hot air stays on when its turned off on drivers side
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