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Home >> Chevrolet >> 2021 >> Express 2500 Base, Van Cargo Extended, 2.8L Eng VIN 1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.8L (LWN) Diesel - Description And Operation >> Description and Operation >> Engine Control Module Description >> ECM Default Actions

ECM Default Actions

When a malfunction occurs within the engine control system, the engine control module (ECM) maintains control of the system with Default Actions. Default Actions are calculated values, and/or calibrated default values, that are stored within the ECM. A certain level of engine performance is possible when a malfunction occurs dependant on the Default Actions taken. The ECM Default Actions prevent a complete loss of engine performance.

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