Operation CHARM
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GMC Truck
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1983
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S15/T15 2WD P/U V6-173 2.8L VIN B 2-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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Test Positions
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Batt
Batt
On some systems this position is used to monitor battery voltage.