Operation CHARM
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GMC Truck
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1991
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G 3500 1 Ton Van V8-454 7.4L
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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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Engine - Coolant Temperature Sensor/Switch
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Radiator Cooling Fan Temperature Sensor / Switch
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Locations
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Auxiliary Cooling Fan Temperature Switch
Auxiliary Cooling Fan Temperature Switch
Engine Wiring & Components, RH Side:
At Middle Of RH Cylinder Head
Applicable to: 7.4L/V8-454 G Series
