There is NO FUSE for DRL on 2014/2015. The fuse is for the individual 9005 lightbulbs, so, if highbeam is working, then it is NOT the fuse.
There is a new(for 2014+) DRL relay, but that part itself is $150+.
Your truck is new, anything like that should be dealt with @ the dealership.
Most likely the relay or loose wiring(rare).
I can post the electrical wiring diagram if you want to debug more, but I still think this should be dealt with by the dealership.