Brake Warning Indicator
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster illuminates the brake warning indicator when the following occurs.
- The body control module (BCM) detects that the park brake is engaged. The instrument panel cluster receives a serial data message from the BCM requesting illumination. The brake warning indicator flashes at a rate of approximately twice per second when the park brake is engaged.
- The body control module (BCM) detects a low brake fluid condition or a base brake pressure differential and sends a serial data message to the instrument panel cluster requesting illumination.
- The instrument panel cluster performs the bulb check.
- The EBCM detects an antilock brake system (ABS)-disabling malfunction which also disables electronic brake distribution and sends a serial data message to the instrument panel cluster requesting illumination.