2015 Yukon - Tail Lights not working

[ATHoosier]

We bought a 2015 Yukon 2 days ago and realized last night that when driving at night the tail lights don't work. Have no idea why. Brake lights work, turn signals work, back up lights work. Just no tail lights when the headlights are turned on. I played around with the lights on auto and physically turned on and still no tail lights. Any help would be appreciated (fuse?).

 

[toi]

must be a fuse , no other explanation

 

[Makai2200]

2 days old? I'd make the dealer figure it out