Driving and Operating 8-59Trailer BrakesA loaded trailer that weighs morethan 450 kg (1,000 lbs) needs tohave its own brake system that isadequate for the weight of thetrailer. Be sure to read and followthe instructions for the trailer brakesso they are installed, adjusted andmaintained properly.Because the vehicle has anti-lockbrakes, do not tap into the vehicle'sbrake system. If you do, both brakesystems will not work well, or at all.Trailer Wiring HarnessAll of the electrical circuits requiredfor the trailer lighting system can beaccessed at a connector mounted tothe frame, behind the rear bumpercover.Trailer SwayControl (TSC)The vehicle has a Trailer SwayControl (TSC) feature as part of theStabiliTrak system. If TSC detectsthat the trailer is swaying, thevehicle's brakes are automaticallyapplied.When TSC is applying the brakes,the TCS/StabiliTrak indicator lightflashes to notify the driver to reducespeed. See Traction Control System(TCS)/StabiliTrak ® Light onpage 4‑25. If the trailer continues tosway, StabiliTrak will reduce enginetorque to help slow the vehicle.TSC will not function if StabiliTrak isturned off.Conversions andAdd-OnsAdd-On ElectricalEquipmentNotice: Do not add anythingelectrical to the vehicle unlessyou check with your dealer/retailer first. Some electricalequipment can damage thevehicle and the damage wouldnot be covered by the vehicle'swarranty. Some add-on electricalequipment can keep othercomponents from working asthey should.Add-on equipment can drain thevehicle battery, even if the vehicle isnot operating.The vehicle has an airbag system.Before attempting to add anythingelectrical to the vehicle, seeServicing the Airbag-EquippedVehicle on page 2‑40 and AddingEquipment to the Airbag-EquippedVehicle on page 2‑41.