2015 chevy duramax question

I know nothing about the chevy duramax, I personally own a 98 dodge cummins so I am turning to my fellow comp d members for some advice. For my work I just received a 2015 chevy Silverado cab and chassis, 3500 single rear wheel, w/Allison 6sp auto. I am putting an aluminum dumping flatbed on it sometime this month. the truck only has 7 miles on it so I know nothing about it yet. I was putting the tags on it today and noticed on the display that it said "diesel fuel additive OK". does this engine require a dpf fluid? I don't see a fill spot anywhere but this truck is all new to me. also is there anything I should be concerned about with this engine/truck? what is the service interval on a new truck like this? any tips or advice would be great. thanks in advance

Yes it uses def. Fill is under the hood, at the cowl next to the rh battery

Like i said i havent even had a chance to really go over the truck. Inly had the hood up once 2 months ago when it got delivered. Thabks for the heads up on the fill location. Can i get that crap at an auto parts store?

Yep any parts store should have it

Be careful.........If you get "DEF QUALITY POOR" on dash G.M. likes to tell customers its there fault if they didnt use DEF from G.M.

I used Def fluid from auto zone and haven't had any issues. I'm not sure the proper filling method but i did mine running and i wouldnt recommend it running

i have had no issues with blue def