GMC Yukon 2023 Owner's Manual page 82

The lower anchors are located in the crease
between the seatback and seat cushion.
The top tether anchors are on the rear of
the seatback for the outboard seating
positions and the rear of the seat cushion
for the center seating position in the second
row. Be sure to use an anchor located
directly behind the seating position where
the child restraint will be placed.
Second Row Bucket
: Seating positions with two lower
anchors.
: Seating positions with top tether
anchors.
Seats and Restraints
The lower anchors are located in the crease
between the seatback and seat cushion.
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