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Home >> GMC >> 1983 >> S15 Jimmy 2.8 B, RWD, Standard, MB6 >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - All Except CALIF V6 >> Component Testing >> 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)
G9014