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Home >> Buick >> 2012 >> Regal Turbo, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting System >> Diagnostic Information and Procedures >> DTC B3884 >> Circuit/System Verification

Circuit/System Verification

Ignition ON, turn the center high mounted brake lamp ON and OFF by applying and releasing the brake pedal. The center high mounted brake lamp should turn ON and OFF when changing between the selected states.