2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 94

i (Top Tether Anchor): Seating positions with top tether anchors. j (Lower Anchor): Seating positions with two lower anchors. For regular cab models, there is an anchor symbol on the covers to assist you in locating the top tether anchors. Crew and Extended Cab Rear Seat For crew and extended cab models, the rear outboard seating positions have exposed metal lower anchors located in the crease between the seatback and the seat cushion. 2-52