Power tailgate is ‘dead’

[Gant]

7 months into my new truck & love it but the electronic tailgate is dead now.  It’s closed and none of the 3 opening options work nor is there any sound of power to any of them.  Need to haul rock and my 5th wheel but dealership is a month out on appointments.  
 

Any manual releases known for these electronic tailgates?

[Another JR]

Don’t know about manual release, but here’s what I’d try:  1) identify and check fuses, 2) disconnect and reconnect the big tailgate electrical connector just behind the bumper near the spare (it’s a complex connector mechanism so pull up a YouTube video if you are not familiar.). 3) disconnect the truck battery(s) for several minutes to reset computers, 4) call dealer; it’s under warranty.