You have to have the same issue 3 times usually, but check your state laws. I would give the dealer a chance to make it right, then proceed other avenues if necessary.
Welcome to the forum!
Welcome to the forum.. we have plenty of frustration here.. after all, I'm the head of the complaint department. :D
But seriously, have a read around and make yourself at home.
Very nice.. truck looks great. My last new Duramax I had I had a code pop 15 mins after leaving the lot, and of course it was emissions related. They'll get you taken care of and you'll be on the road again.