Silverado SS AWD V8-6.0L VIN N (2003)
Brake Warning Indicator: Testing and Inspection
ABS Indicator Always on
Antilock Brake System
Diagnostic Information and Procedures
ABS Indicator Always On
Circuit Description
The instrument panel cluster (IPC) illuminates the ABS indicator by supplying ground to the lamp. The electronic brake control module (EBCM)
sends class 2 serial data messages to the IPC in order to command the indicator ON or OFF.
Diagnostic Aids
The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with Diagnostic System
Check - ABS .
Test Description
The number below refers to the step number on the diagnostic table.
3. This step tests if the IPC is able to turn OFF the ABS indicator.
ABS Indicator Always On Steps 1 - 6
