GMC 2007 Yukon XL Owner's Manual page 76

Third Row — Two
Passenger
Third Row — Three
Passenger
76
i
(Top Tether Anchor):
Seating positions with
top tether anchors.
i
(Top Tether Anchor):
Seating positions with
top tether anchors.
For models with a three passenger third row seat,
see the information following for installing a child
restraint with a top tether in the third row, if your
vehicle has one. Never install two top tethers using
the same top tether anchor.
For models with 60/40 second row seating, the
rear right side passenger and center seating
positions have exposed metal anchors located in
the crease between the seatback and the seat
cushion.
For models with second row bucket seats, both
rear seating positions have exposed metal anchors
located in the crease between the seatback and
the seat cushion.