Black plate (29,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -2015 - CRC - 10/31/14Driving and Operating 9-29Hill Start Assist (HSA)This vehicle has an HSA feature,which may be useful when thevehicle is stopped on a gradesufficient enough to activate HSA.This feature is designed to preventthe vehicle from rolling, eitherforward or rearward, during vehicledrive off. After the driver completelystops and holds the vehicle in acomplete standstill on a grade, HSAwill be automatically activated.During the transition period betweenwhen the driver releases the brakepedal and starts to accelerate todrive off on a grade, HSA holds thebraking pressure for a maximum oftwo seconds to ensure that there isno rolling. The brakes willautomatically release when theaccelerator pedal is applied withinthe two-second window. It will notactivate if the vehicle is in a drivegear and facing downhill, or if thevehicle is facing uphill and inR (Reverse).Ride Control SystemsTraction Control/Electronic StabilityControlSystem OperationThe vehicle has a Traction ControlSystem (TCS) and StabiliTrak ® , anelectronic stability control system.These systems help limit wheel slipand assist the driver in maintainingcontrol, especially on slippery roadconditions.TCS activates if it senses that anyof the drive wheels are spinning orbeginning to lose traction. On anAll-Wheel-Drive (AWD) vehicle, thesystem will operate if it senses thatany of the wheels are spinning orbeginning to lose traction. When thishappens, TCS applies the brakes tothe spinning wheels and reducesengine power to limit wheel spin.StabiliTrak activates when thesystem senses a discrepancybetween the intended path and thedirection the vehicle is actuallytraveling. StabiliTrak selectivelyapplies braking pressure at any oneof the vehicle's brakes to help steerthe vehicle in the direction whichyou are steering.If cruise control is being used andtraction control or StabiliTrak beginsto limit wheel spin, cruise control willdisengage. Cruise control may beturned back on when roadconditions allow.Both systems come onautomatically when the vehicle isstarted and begins to move. Thesystems may be heard or felt whilethey are operating or whileperforming diagnostic checks. Thisis normal and does not mean thereis a problem with the vehicle.It is recommended to leave bothsystems on for normal drivingconditions, but it may be necessaryto turn TCS off if the vehicle gets
