Troubleshooting Brake Controller with no Power

Question:

I have a 2014 GMC 3500 Savanna. My brake controller is not working with no power to the unit. Want to check the fuse but cannot locate it. Fuse box diagrams are of no help. Would you happen to know its location ? The van was factory wired for the brake controller Thanks

asked by: Kevin E

Expert Reply:

I tried looking up the fuse locations for your 2014 GMC 3500 Savana and I wasn't able to locate any fuses dedicated to a brake controller. If your brake controller isn't getting power, and you have tested the power wiring using a circuit tester # PTW2993, I do have a solution for you still.

You could try tracing the power wire to see where it might be damaged, but it would most likely be easier to run 10 Gauge Wire # 10-1-1 from your battery to your brake controller so that you bypass your vehicle wiring completely. Just be sure that you install a 20-amp circuit breaker like part # PK54520 towards your battery end to protect your controller.

I have attached a photo and a link to a helpful article that you can check out as well.

expert reply by: Jon G