2013 Silverado Trailer Brake Fuse. Might have a shortedloose wire there. Electronic Brake Control Module EBCM 10.
The fuse for the brake controller on a 2013 Chevy Suburban should be at the front of the power distribution box closest to the front of the vehicle and nearest to one of the 2 terminals at are at the very front of the box. Steering Wheel Controls Backlight. The 12v power lead on the wire harness is used to keep the breakaway battery charged up.
Heated Windshield Washer System.
According to the owners manual for the vehicle the brake controller fuse is in location 6. Fuse box diagram fuse layout location and assignment of fuses and relays Chevrolet Silverado GMC Sierra 1500 2500HD 3500HD 2007-2013. Stud 2 Trailer Brakes 64. The fuse and wire for the ITBC is factory installed and connected if the vehicle is equipped with an ITBC.