Tail light out
I also have a 2015 Yukon XL. Was stopped by a
woman with the same vehicle, telling me my tail
light was out and that hers was too. The dealership
said they get a lot of that. Seems like a BBB issue
and that there should be a recall at this point. I
found that mine will not even be covered through
extended warranty so I'm thankful for your
suggestions! I've heard that sometimes tapping it
some can make it come back on??