GMC Yukon XL 2015 Owner's Manual page 122

Third Row Seat
(Top Tether Anchor): Seating
positions with top tether anchors.
To assist in locating the lower
anchors, each seating position with
lower anchors has two labels, near
the crease between the seatback
and the seat cushion.
To assist in locating the top tether
anchors, the top tether anchor
symbol is near the top tether
anchors for second row seats. For
third row seats (if equipped), the top
tether anchor symbol is on the
flipper panel.
Seats and Restraints
Second Row Seat
For models with bucket second row
seating, the top tether anchors are
at the bottom rear of the seat
cushion for each seating position in
the second row. Be sure to use an
anchor on the same side of the
vehicle as the seating position
where the child restraint will be
placed.
3-53
Bucket