Operation CHARM
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GMC Truck
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2001
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Savana 1 Ton Van V8-5.7L VIN R
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Repair and Diagnosis
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Heating and Air Conditioning
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Description and Operation
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HVAC Systems - Manual
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Air Temperature Description and Operation
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Heater Mode
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Off Mode
Off Mode
When the OFF blower setting is selected, the switch creates an open circuit within the auxiliary blower motor switch. This prevents any output being provided by the switch.