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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P053A-P053C >> Circuit/System Description

Circuit/System Description

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The positive crankcase ventilation heater is controlled by the ECM. Ignition voltage is directly supplied to the positive crankcase ventilation heater and the ECM provides a controlled ground circuit.

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