2012 Chevrolet Tahoe Owner's Manual - Page 362

9-84 Driving and Operating If the vehicle's brake, anti‐lock brake or StabiliTrak systems are not functioning properly, the ITBC system may not be fully functional or may not function at all. Make sure all of these systems are fully operational to ensure full functionality of the ITBC system. The ITBC system is powered through the vehicle's electrical system. Turning the ignition off will also turn off the ITBC system. The ITBC system is fully functional only when the ignition is in ON or in RUN. The ITBC system can only be used with trailers with electric brakes. { WARNING Connecting a trailer that is not compatible with the ITBC system may result in reduced or complete loss of trailer braking. There may be an increase in stopping distance or trailer instability which could result in personal injury or damage to the vehicle, trailer, or other property. An aftermarket controller may be available for use with trailers with surge, air, or electric‐over‐hydraulic trailer brake systems. To determine the type of brakes on the trailer and the availability of controllers, check with your trailer manufacturer or dealer. When trailering, make sure of the following: . The ITBC system is used only with trailers that are equipped with electric brakes. All applicable local and federal laws and regulations are followed. All electrical and mechanical connections to the trailer are made correctly. The trailer 's brakes are in proper working condition. The trailer and vehicle are properly loaded for the towing condition. . . . . The ITBC system is a factory installed item. Out‐of‐factory installation of this system should not be attempted. GM is not responsible for warranty or performance of the system resulting from out‐of‐factory installation.