2008 GMC Acadia Owner's Manual - Page 55

Second Row - Bucket Shown, Bench Similar The top tether anchors are located at the bottom rear of the seatback for each seating position in the second row. Open the cover to access the anchors. Be sure to use an anchor located on the same side of the vehicle as the seating position where the child restraint will be placed. Third Row Seat The third row has one top tether anchor located at the bottom rear of the center seatback. This anchor should be used for the center seating position only. Never install two top tethers using the same top tether anchor. Do not secure a child restraint in a position without a top tether anchor if a national or local law requires that the top tether be attached, or if the instructions that come with the child restraint say that the top tether must be attached. 1-51