Circuit/System Verification
WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, Clear the DTC. Observe the scan tool BCM Brake Applied Output Signal parameter. The parameter should change from ON to OFF when the brake pedal is depressed.
- If the parameter does not change, refer to Stop Lamps Malfunction .
- Ignition ON, observe the scan tool BCM Shifter Unlock Command parameter. The parameter should change from ON to OFF when the brake pedal is depressed.
- If the parameter does not change, replace the BCM.