2010 GMC Acadia Owner's Manual - Page 111

Seats and Restraints 3-57 To assist you in locating the lower anchors, each second row anchor position has a label, near the crease between the seatback and the seat cushion. Second Row - 60/40 Bench Third Row i (Top Tether Anchor): Seating positions with top tether anchors. i (Top Tether Anchor): Seating positions with top tether anchors. j (Lower Anchor): Seating positions with two lower anchors. To assist you in locating the top tether anchors, the top tether anchor symbol is located on the cover or near the anchor.