2013 duramax
i have a 2013 chevy duramax today when i hooked up 5th wheel i was getting a warning on my dash, ( service trailer brake system) what could cause this? I was thinking maybe a bad connection at my 7 ...
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On a previous trailer I had a brake wire rubbing inside the drum exposing the copper and causing an intermittent brake failure message. Sealed it up and never had the issue again.
