2018 Chevrolet Suburban briefly went dead on the highway

Vehicle just completely dead while in motion on the highway for about 10-15 seconds. All of a sudden the vehicle just started back up on its own.

Very bizarre, be aware if this happens again braking and steering may be compromised, not useless but requiring more force.

not sure how it can shut off for 15 seconds which is a longgg time and then automatically start again .

Does this vehicle have a stop-start system?