GMC Yukon XL Denali Owner's Manual page 106

3-52 Seats and Restraints
Lower Anchor and Top Tether
Anchor Locations
Second Row
(Lower Anchor): Seating
positions with two lower anchors.
(Top Tether Anchor): Seating
positions with top tether anchors.
For models with 60/40 second row
seating, the rear right side
passenger and center seating
positions have exposed metal
anchors in the crease between the
seatback and the seat cushion.
Second Row
(Lower Anchor): Seating
positions with two lower anchors.
60/40
(Top Tether Anchor): Seating
positions with top tether anchors.
For models with second row bucket
seats, both rear seating positions
have exposed metal anchors in the
crease between the seatback and
the seat cushion.
Bucket
(Top Tether Anchor): Seating
positions with top tether anchors.
There is one top tether anchor that
can be used for either the third row
center or driver side seating position
but not both at the same time.
For models with a third row seat,
see the information following for
installing a child restraint with a top
tether in the third row. Never install
two top tethers using the same top
tether anchor.
Third Row Seat