Operation CHARM
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Ford
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2003
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Excursion 4WD V8-6.0L DSL Turbo
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Heater Core
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Description and Operation
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Auxiliary Climate Control
Auxiliary Climate Control
The auxiliary A/C system uses a rear
heater core
which operates in the same manner as the front heater core.