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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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