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2007
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Sierra 1500 2WD V8-4.8L
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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 - Manual
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Air Recirculation Malfunction
Air Recirculation Malfunction
Air Recirculation Malfunction
Step 1 - Step 8:
Step 9 - Step 14:
