Circuit/System Testing
WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
- Apply and release brake pedal. Verify brake lamps operate properly.
- If brake lamps do not operate properly, refer to Symptoms - Lighting Systems .
- Replace EBCM/brake pressure modulator valve (BPMV) assembly.