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 article to diagnose the no communication concern.
The red brake warning indicator is always/never on	Instrument Panel Cluster (IPC) concern ABS concern	RETRIEVE all DTCs and REFER to the ABS MODULE DTC CHART . If no DTCs are present, REFER to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
The yellow ABS warning indicator is always/never on	Instrument Panel Cluster (IPC) concern ABS module	RETRIEVE all DTCs and REFER to the ABS MODULE DTC CHART . If no DTCs are present, REFER to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
The stability/traction control indicator (sliding car icon) is never/always on	IPC ABS concern	RETRIEVE all DTCs and REFER to the ABS MODULE DTC CHART . If no DTCs are present, REFER to INSTRUMENTATION SYSTEM, MESSAGE CENTER & WARNING CHIMES article.
ABS false activation, ABS too sensitive, ABS activates on normal stop	Front/rear suspension concern	ELIMINATE the front/rear suspension as the cause of the problem. REFER to FRONT SUSPENSION article (front suspension) or REAR SUSPENSION article (rear suspension).
	Parking brake shoes out of adjustment (dragging)	CHECK and if necessary, ADJUST the parking brake shoes. REFER to PARKING BRAKE SYSTEM ACTUATION article.
The traction control system cannot be disabled	Wiring, terminals, or connectors Stability/traction control switch ABS module 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 O .
The stability/traction control indicator (sliding car icon) is flashing at all times	NOTE: It is normal for the indicator to flash during a traction control event. ABS module not calibrated	RETRIEVE and RECORD all ABS module DTCs and GO to the ABS MODULE DTC CHART .