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GMC
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2000
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K 3500 Truck 4WD V8-6.5L DSL Turbo VIN F
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Repair and Diagnosis
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Heating and Air Conditioning
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Blower Motor
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Description and Operation
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HVAC System - Manual
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Air Distribution System
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Mode Valves
Mode Valves
The heater system provides a choice of three basic operating modes:
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VENT
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HEATER
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DEFROST