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Home >> GMC >> 1998 >> Forward Control 5.7 R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 5.7L >> Ignition System >> Timing Control Systems >> Ignition Control Circuit
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Ignition Control Circuit

An open or short to ground in Ignition Control (IC) or by-pass circuit will cause PCM/VCM to turn on Malfunction Indicator Light (MIL) and confirm fault by setting a related trouble code. See TESTS W/CODES - 5.7L article.

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