Operation CHARM
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GMC Truck
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1989
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R 3500 P/U 2WD 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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Coolant Temperature Sensor/Switch (For Computer)
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Locations
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Water Temperature Switch
Water Temperature Switch
LH Side Of Engine
Applicable to: R & V Series w/V6-292/4.8L Engine