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2003
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K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel
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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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Symptoms - HVAC System - Manual
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Air Recirculation Malfunction
Air Recirculation Malfunction
Steps 1 - 3:
Steps 4 - 7:
Steps 8 - 14: