2004 GMC Sierra

2004 GMC SIERRA
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AR1825
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Air Conditioning problem
2004 GMC Sierra V8 Two Wheel Drive Automatic

my truck has been throwing out warm/hot air thru the driver side vents, while throwing out cool air thru the passenger side vents what is causing this?
Sep 28, 2009 at 7:31 PM
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BMRFIXIT
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Check A/C system if full and have enough pressure on low and high sides
if the system function is all in order
I would suspect blend door actuator
I would check and make sure if 134A low in system 1st
Sep 28, 2009 at 8:01 PM