LEMON Manuals
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GMC
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1983
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S15 Jimmy 2.8 B, RWD, Standard, MB6
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Repair and Diagnosis
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Engine Performance
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Ignition System
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Ignition System - All Except CALIF V6
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Component Testing
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Electronic Spark Control (ESC) Testing
Electronic Spark Control (ESC) Testing
NOTE:
Electronic Spark Control (ESC) is used on some Chevrolet and GMC models using the 5.0L 4-Bbl. (VIN LE9) engine.
Fig 1: Wiring Diagram for HEI System w/Electronic Spark Ctrl (ESC)