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Home >> GMC >> 1990 >> Forward Control 3.9 L >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Ignition System >> Overhaul >> Notes

Ignition System: Overhaul: Notes

CAUTION: Although similar in appearance, components of HEI/EST and HEI distributors are NOT interchangeable. See Figure-10.

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