Drifting dashboard clock...!

The stock dashboard clock on my '12 has started drifting, falling back 10-12 minutes last week. Truck is stock, no weird electrical add-ons or mods, just the typical plugged-in GPS power.

Should I be concerned?

What should I look at?
Battery?
Clock not getting full 12V?

 

Bump

Any ideas..?

 

Close to the dealer? If I have a truck under warranty, that's the first person I call. Last thing you want to do is try and self diagnose something and cause undue damage that will NOT be fixed by the dealer for free, like the original problem.

 

Mechanics charge more if you tried to fix it first, lol