New 2018 2500 Locks Started Doing Some Weird Stuff

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I have a new (probably two weeks old now) 2018 Silverado 2500.  The locks were functioning normally until last night.  

 

1) It was a little under 30 degrees out, I unlocked the driver's door with the key fob, opened it, grabbed something out of the cab and closed the door.  The doors immediately locked themselves.  I hit the unlock button, I heard some locks move, but the driver's door did not open until I double clicked it to open all of the doors.

 

2) I changed the Mylink setting from open driver door to open all doors and then back to driver door only.  

 

3) The locks were fine today until I was about 8 miles into a trip going around 50 mph and I heard all of the locks move.  They did not unlock so I'm guessing they all locked for no reason.  The key fob was on the key in the ignition so couldn't have been pressed.

 

Is this worth taking in for service or should I just drive it more and see what happens?  I hate to have techs poking around a new truck unless it's really worth it.