Operation CHARM
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GMC Truck
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2007
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Sierra Classic 3500 4WD V8-6.0L
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Repair and Diagnosis
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Heating and Air Conditioning
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Diagnosis By Symptom - HVAC System - Automatic
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Air Recirculation Malfunction
Air Recirculation Malfunction
Air Recirculation Malfunction
Test
Step 1 - Step 5:
