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Posted

2019 Silverado LD. I have the factory brake controller. When trailer is plugged in no connection to bcm is displayed . I checked fuses in engine bay. I have good fuses,I checked them with meter. I HV ave no power to the fuses for rt,lt or reverse fuses. Are these controlled by a relay? Need help finding lose of voltage to only these fuses. 

  • 2 weeks later...
Posted

Did you figure it out? It's been a while but they used to tape back a pigtail with an eyelet to the main factory harness long enough to connect to the fuse block. Maybe that's what you need to do. That pig tail is for trailer power and sometimes there would be a maxi fuse to install too. That fuse would be taped to the trailer brake harness. I am not sure if they still do that, as my 2018 everything was already connected.

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