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Trailer running lights not working

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33K views 14 replies 12 participants last post by  TGef  
I haven’t been able to solve this issue with my 2016. However the fuse that controls the trailer running lights for me keeps blowing. I can’t remember the fuse # but the trailer worked fine on another truck so I’m not sure what the issue is with the Colorado.


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I haven’t been able to solve this issue with my 2016. However the fuse that controls the trailer running lights for me keeps blowing. I can’t remember the fuse # but the trailer worked fine on another truck so I’m not sure what the issue is with the Colorado.


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Since this thread was revived I’ll come back to say I resolved my issue. No issue on the truck side. It was my trailer. Had a funky adapter that I was using to convert from an old 4 pin to my 4 pin on the truck. Turned out wiring was bad somewhere. I replaced the trailer harness and lights and threw in a new fuse and my issue was solved. Haven’t blown the fuse since.


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