GMC Acadia Owner's Manual page 98

3-46 Seats and Restraints
Lower Anchor and Top Tether
Anchor Locations
Second Row Bucket
(Top Tether Anchor): Seating
positions with top tether anchors.
(Lower Anchor): Seating
positions with two lower anchors.
Second Row 60/40 Bench
(Top Tether Anchor): Seating
positions with top tether anchors.
(Lower Anchor): Seating
positions with two lower anchors.
Third Row
(Top Tether Anchor): Seating
positions with top tether anchors.
To assist in locating the lower
anchors, each second row anchor
position has a label, near the crease
between the seatback and the seat
cushion.