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Home >> Chevrolet >> 1991 >> Forward Control 3.9 L, SM465/M20 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Diesel) >> Output Signals
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Output Signals

NOTE: Output signals are regulated by the ECM to maintain correct driveability and exhaust emissions. For theory and operation of components, refer to indicated system.