BRAKE Warning Indicator
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, and 2003 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The Instrument Panel Cluster (IPC) illuminates the BRAKE warning indicator when one or more of the following occurs:
- The Body Control Module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM requesting illumination.
- The Electronic Brake Control Module (EBCM) detects a low brake fluid condition. The IPC receives a class 2 message from the EBCM requesting illumination.
- The EBCM detects an ABS malfunction which disables Dynamic Rear Proportioning (DRP). The IPC receives a class 2 message from the EBCM requesting illumination.
- The IPC performs the bulb check at the start of each ignition cycle. The BRAKE warning indicator illuminates for approximately 3 seconds before turning OFF.
- The IPC detects a loss of class 2 communications with the BCM or with the EBCM.