Operation CHARM
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GMC Truck
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1991
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C 2500 Truck 2WD V6-262 4.3L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Engine Lubrication
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Oil Pressure Gauge
Oil Pressure Gauge
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Testing and Inspection
Gauge Readings Are Inaccurate
Gauge Reads ``0''
Gauge Reads ``80'' or Above
Technical Service Bulletins
