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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Description And Operation) >> Description and Operation >> Diesel Exhaust Fluid (DEF) Warning Strategy (Diesel Exhaust Fluid (DEF) Level) >> Warning Level 3

Warning Level 3

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Warning Level 2 automatically advances to Warning Level 3 when the ECM detects an ignition On to ignition Off event. A level 3 warning remains active as long as the estimated range remaining is greater than 483 km (300 mi) based on current DEF consumption rates.