Driving and Operating 8-39When the system activates, theTraction Control System (TCS)/StabiliTrak warning light flashes onthe instrument panel. A noise maybe heard or a vibration may be feltin the brake pedal. This is normal.Continue to steer the vehicle in theintended direction.If there is a problem detectedwith StabiliTrak, SERVICESTABILITRAK displays on theDriver Information Center (DIC) andthe TCS/StabiliTrak warning lightcomes on the instrument panelcluster. When this message andwarning light displays, the system isnot operational. Driving should beadjusted accordingly. See DriverInformation Center (DIC) onpage 4‑31 and Messages andTraction Control System (TCS)/StabiliTrak ® Light on page 4‑28 formore information.The TCS/StabiliTrak button islocated on the instrumentpanel (CTS) or the steeringwheel (CTS-V).StabiliTrak comes on automaticallywhenever the vehicle is started.The system should be left on to helpassist with directional control of thevehicle. If StabiliTrak needs to beturned off, press and hold theTCS/StabiliTrak button until theTCS/StabiliTrak warning light comeson and STABILITRAK OFF comeson the DIC. More steering effort isrequired when the system isturned off.If cruise control is being used whenthe StabiliTrak activates, the cruisecontrol will automatically disengage.When road conditions allow,reengage the cruise control.See Cruise Control on page 8‑41for more information.