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GM has issued and revised a technical service bulletin (TSB) for the 2015 to 2017 Chevrolet SS Sedan several times. The latest version includes the replacement of the rear brake pad insulator shims in addition to applying copper paste to the ends of the brake pad backing plates. This video will show you an overview of how to perform the tasks defined in GM TSB Document ID 4839798 / 17-NA-245 dated July 25, 2017.