I have the bench seat in both the 2nd and 3rd rows. I have 2 tether anchors for use in the 2nd row, FF carseats. There is 1 near the base of the drivers seat, for RF carseat in the 2nd row, the other is near the base of the passenger seat for FF. So if I had a RF carseat in the 3rd row, I would have 2 options to anchor it. There is one tether anchor for a FF carseat in the 3rd row, and the anchor is to the left, toward the drivers side, of the center. I know where all the current anchors are.
My issue is needing another one to be able to install 2 FF carseats in the 3rd row. When we have another baby, we will be putting the baby in the 2nd row, middle seat, and that is currently where my 3yo FF in a MA is. I will be wanting to move him to the 3rd row, passenger side, and there is not a place to tether his seat. Currently my 5yo is in the 3rd row, drivers side in his Regent, and is using the only tether anchor.
I haven't called GMC yet, but I will.