Road Sensing SuspensionThe Road Sensing Suspension (RSS) feature providessuperior vehicle ride and handling under a variety ofpassenger and loading conditions.The system is fully automatic and uses a computercontroller to continuously monitor vehicle speed, wheelto body position, lift/dive and steering position of thevehicle. The controller then sends signals to each shockabsorber to independently adjust the damping level toprovide the optimum vehicle ride.RSS also interacts with the tow/haul mode that, whenengaged, will provide additional control of the shockabsorbers. This additional control results in better rideand handling characteristics when the vehicle isloaded or towing a trailer. See “Tow/Haul Mode” underTowing a Trailer on page 4-54.StabiliTrak ® SystemYour vehicle is equipped with StabiliTrak® , whichcombines antilock brake, traction and stability controlsystems and helps the driver maintain directional controlof the vehicle in most driving conditions.When you first start your vehicle and begin to drive away,the system performs several diagnostic checks to insurethere are no problems. You may hear or feel the systemworking. This is normal and does not mean there is aproblem with your vehicle. The system should initializebefore the vehicle reaches 20 mph (32 km/h). In somecases, it may take approximately two miles of drivingbefore the system initializes.If the system fails to turn on or activate, the STABILITYSYS DISABLED or SERVICE STABILITY messagewill be displayed. If the vehicle has gone through heavyacceleration or braking or multiple turns during thefirst two miles of driving after starting your vehicle, theSTABILITY SYS DISABLED message may appear.If this is the case, your vehicle does not need servicing.You will need to turn the vehicle off and then restartit to initialize StabiliTrak ®. If either message appears onthe Driver Information Center (DIC), and your vehiclehasn’t gone through hard acceleration, braking ormultiple turns in the first two miles of driving, yourvehicle should be taken in for service.4-9
