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Home >> GMC >> 1983 >> Value Van P3500, 7.4 W, Automatic, 475/M40 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Feedback Carburetor Component Test) >> ESC System Check >> Electronic Spark Control (ESC) System Check

Electronic Spark Control (ESC) System Check

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Fig 1: Flow Chart - Electronic Spark Control (ESC) System Check (Engine Knock, Poor Performance Or Poor Economy) - No Code 43
G258
Fig 2: Flow Chart - Electronic Spark Control (ESC) System Check (Engine Knock, Poor Performance Or Poor Economy) - No Code 43
GB0046403
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