Operation CHARM
: Car repair manuals for everyone.
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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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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Positions
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MPH
MPH
Displays vehicle speed by sensing pulses transmitted to the ECM from the
vehicle speed sensor
.