2017 GMC Sierra electrical failure

[Anthony Alcocer]

I just got my truck less than a week ago 2017 GMC Sierra 1500 SLE 47k mi. 
many given moment the truck will lose all electrical power, radio shut down, dash loses power, time resets, the works. If I auto start the it and it happens the fob is in-op, won’t lock unlock… 

it is from Texas but has been in Alaska for five months, fully winterized, trickle charger, block heater, oil pan heater everything. It gets plugged in every night. 
Has no reported recalls corresponding with the VIN. It does every so often have an action required to open and close the driver window. 
I have seen some issues on the forum regarding ground G218 (might be wrong identifier) but the symptoms aren’t quite the same. 
SEND HELP!

thanks 

[steelerdude15]

The symptoms may not be the same, but you’re on the right track. Start with your grounds.