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Old 08-11-2012, 08:48 PM   #77
RoketRdr
 
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Drives: 2010 Duramax; 2012 CTS-V Coupe
Join Date: Apr 2012
Location: Houston, Tx
Posts: 387
The heat exchanger is bypassed while in chiller mode. When you turn the AC off it will switch back to the heat exchanger.
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