1990 GMC C1500 NO AC

1990 GMC C1500
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JJESSE623
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Air Conditioning problem
1990 GMC C1500 V8 Two Wheel Drive Automatic

My AC stoped working i can hear the compressor coming on and the line gets cold but no air out the vent i have replaced the fuses the blower moter resistor and the blower moter along with the 3 relays but no air any ideas on what could be wrong ?
Aug 24, 2010 at 12:38 AM
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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