NHTSA Complaint #11485624 — 2011 GMC SIERRA 1500

I towed a U-Haul trailer for four hours from Winter Springs, FL to Tallahassee, FL 08/18/2022. On the way back to Winter Springs, FL on 08/21/2022, I began to hear the dings and a message to service the trailer brake system. I had the vehicle looked at to determine the problem. The fuse was determined to be good, the ground wire was secure and not damaged, and the relay was functioning. I have been told that it may be a defective wire harness which could lead to other safety issues while operating the vehicle. The constant dinging and the blocking of vital messaging by the warning is a distraction and safety issue. A recall should be issued to correct this safety defect.