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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 >> Powertrain Expansion Bus

Powertrain Expansion Bus

The ECM has an additional CAN bus, the powertrain expansion bus. the following components are integrated the Recuctant Control Module, the Nitrogen Oxides Sensor 1, the Nitrogen Oxides Sensor 2 and the ECM.