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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (3 Of 3)) >> Diagnostic Information and Procedures >> DTC P21CB >> Repair Instructions

Repair Instructions

WARNING: This page is about a different variant/trim than selected.

Perform the Diagnostic Repair Verification after completing the repair.

Emission Reduction Fluid Controller Replacement

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