GMC Yukon 2015 Owner's Manual page 122

Second Row Bucket
(Lower Anchor): Seating
positions with two lower anchors.
(Top Tether Anchor): Seating
positions with top tether anchors.
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.
Seats and Restraints
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.
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