Traction Control System (TCS)

LOW TRAC INDICATOR
The IPC illuminates the Low Trac indicator when the following occurs:
^ The Electronic Brake Control Module (EBCM) detects a traction control event (either ABS active or traction control system active). The IPC receives a class 2 message from the EBCM requesting illumination.
^ The IPC performs the displays test at the start of each ignition cycle.

TCS Off Indicator (Pontiac) or ASR Off Indicator (Chevrolet)
The IPC illuminates the indicator when the following occurs:
^ The electronic brake control module (EBCM) inhibits the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination.
^ The TCS is off.
^ The TCS has failed.
^ The IPC detects a loss of class 2 communications with the EBCM.