GM Service Manual Online
For 1990-2009 cars only

Brake Warning Indicator and BRAKE FLUID Message

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 serial data message from the BCM requesting illumination.
    • The BCM detects a low brake fluid condition for 30 seconds. The IPC receives a serial data message from the BCM requesting illumination. The driver information center (DIC) will also display the BRAKE FLUID message.
    • The electronic brake control module (EBCM) detects an ABS malfunction which disables dynamic rear proportioning (DRP). The IPC receives a serial data 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 serial data communications with the EBCM.
    • The Display Test is performed with a scan tool.