Operation CHARM
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GMC Truck
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1983
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G 2500 3/4 Ton Van V8-350 5.7L VIN L 4-bbl
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Early Fuel Evaporation ( EFE )
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Diagrams
Early Fuel Evaporation ( EFE ): Diagrams
Fig. 15 Typical EGR/EFE/DS vacuum system. 1983-84 V8 gasoline engines less solenoid control:
