Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the ABS module	Fuse Wiring, terminals or connectors ABS module concern	REFER to MODULE COMMUNICATIONS NETWORK .
The red brake warning indicator is always/never on	Instrument Cluster (IC) concern ABS module concern	RETRIEVE all DTCs and REFER to the ABS Module DTC Chart . If no DTCs are present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
The yellow ABS warning indicator is always/never on	IC concern ABS module	RETRIEVE all DTCs and REFER to the ABS Module DTC Chart . If no DTCs are present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
The sliding-car icon flashes once every 2 seconds	Stability/traction control system calibration required	CALIBRATE the stability/traction control system. CARRY OUT the IVD initialization sequence. FOLLOW the scan tool directions.
The stability/traction control indicator "sliding-car icon" is never/always on	IC ABS concern	RETRIEVE all DTCs and REFER to the ABS Module DTC Chart . If no DTCs are present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
The stability/traction control disabled indicator "sliding-car OFF icon" is never/always on	IC ABS concern	RETRIEVE all DTCs and REFER to the ABS Module DTC Chart . If no DTCs are present, REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
Unintended ABS activation, ABS too sensitive, ABS activates on a normal stop	Brake drag	ELIMINATE the base brake system as the cause of the problem. REFER to Diagnosis and Testing in BRAKE SYSTEM - GENERAL INFORMATION .
	Front/rear suspension concern Parking brake shoes out of adjustment (dragging) Wheel speed sensor tone rings Wheel speed sensor Wiring, terminals or connectors	GO to PINPOINT TEST P .
The traction control system cannot be disabled	IC message center If a MyKey® restricted key is in use with the AdvanceTrac® always-on feature configured to "on", the traction control system cannot be disabled. An admin key must be used in order to enable and disable the traction control system	GO to PINPOINT TEST Q .