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Two days ago my heater or AC will only blow out.
2001 GMC YUKON
Two days ago my heater or ac will only blow out through the defrost vents. Rear air blows correctly. Cannot find diagram of vacuum hoses.
Friday, January 4th, 2013 AT 1:17 PM
First try pulling fuse for hvac for 60 seconds then see if that fixes it, sometimes it does. Then check item 3 & 7 in attached drawing.
Image (Click to enlarge)
Friday, January 4th, 2013 AT 3:31 PM
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