2017 NV 3500 Passenger SL
The trailer running lights went out.
I took it to the dealer after not finding the fuse myself.
The service manager spent an hour figuring it out.
That failed
They scheduled an appointment .
The problem was solved and i got the van back working ,
they however didn't inform me of the location of the fuse . I am now trying to find the fuse location in case it happens while im out traveling.