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Home >> Buick >> 2011 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Lighting System) >> Diagnostic Information and Procedures >> DTC B3884 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, perform the Center Brake Lamp test. The center brake lamp should be ON/OFF.