2005 GMC Sierra Im a curious mechanic

2005 GMC SIERRA
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BIGDOG030308
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Heater problem
2005 GMC Sierra V8 Four Wheel Drive Automatic
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When I go to turn on my a/c or heater nothing comes out. Nothing blows. All my fuses are good. What could be wrong with my truck?
Sep 14, 2008 at 6:48 AM
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