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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Thanks for the reply, ,,, at the current moment i have not got this warning without having the truck connected to the rv. on that note i have only driven the truck a couple times short trips.
