Operation CHARM
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GMC Truck
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1984
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S15/T15 4WD 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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Ignition System
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Electronic Spark Control Module
Electronic Spark Control Module
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Description and Operation
Testing and Inspection
Locations
Typical Electronic Spark System (ESC)
Typical ESC Controller
