Headlights Turn Off While Driving problems of the 2017 Chevrolet Cruze

On 11-6-18 at 33,960 mi while driving on city street a loud pop sound under the dash, instrument panel and all electrical went out (dash, radio, etc) then all warning lights cam on as if car had just been turned on, all display came back normal after several seconds but check engine light stayed on. Dealer found code p16f3 and replaced ecm. Three weeks later (11-23-18 at 34,960 mi) same thing happened while driving but no pop sound and no check engine light afterward. Dealer found no codes but indicated a tech bull dated oct 5, 18 (pic 63333c) indicting gm working on fix. 5 weeks later (12-26-18 at 35,970) same thing occurred agin but this time, unlike previous two times, was driving at highway speed in dark and headlights also were affected (headlights went out then came back on). Immediately drove to nearest dealer (different than original dealer) and they also suggested calling gm consumer line to enter a ticket for safety. Dealer had vehicle nearly 2 weeks but could not find any codes or issues and said gm tech called and said return car to owner as there are no issues. Consulted a local mechanic (former gm) and discussed with service mgr at dealer about a possible ground problem that would impact computers w/o causing codes. At impasse as dealer refuses to acknowledge there is a problem. Scared to drive vehicle at night for fear of accident. Do not know of headlights were affected first two times because of daylight conditions.