Driver Information Indicators and Messages
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
The following indicators are used to inform the driver of several different factors.
Brake Warning Indicator
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.
ABS Indicator
The instrument panel cluster illuminates the ABS indicator when the following occurs.
- The electronic brake control module (EBCM) detects an ABS-disabling malfunction and sends a serial data message to the instrument panel cluster requesting illumination.
- The instrument panel cluster performs the bulb check.
- The instrument panel cluster detects a loss of serial data communication with the EBCM.
- A DTC is set during the previous ignition cycle which requires an United Nations Economic Commission for Europe regulation number 13 (ECE 13) response at the beginning of the current ignition cycle. The EBCM sends a serial data message to the instrument panel cluster requesting illumination.