Chevy2014.

I drive a 2014 Silverado and I was pulling in to a store as well today and my truck just shut off everything shut off, I turned it off for a sec an turned it back on so I cud completely pull in to the store.. but before it shuts off like that the lights started to flicker. Then it happen about an hr later again when pulling in to a drive thru coffee shop... can any shed some light on my problem or a fix??