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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 439 (Lighting System) >> Diagnostic Information and Procedures >> DTC B3891 >> Conditions for Running the DTC

Conditions for Running the DTC

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The ignition is ON. Park lamps must be ON and the rear fog lamps must be commanded ON.

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