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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Description And Operation) >> Description and Operation >> Diesel Exhaust Fluid (DEF) Warning Strategy (Emission Control) >> Warning Level 2

Warning Level 2

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Warning Level 2 is triggered after the first mileage countdown expires without vehicle service. The driver will hear 4 chimes on entering Warning Level 2. The DIC displays the following messages:

The messages alternate every 5 seconds in the DIC until acknowledged by the driver.