2008 GMC Canyon Owner's Manual - Page 51

Extended Cab - Rear Seat The top tether anchors in an extended cab model are located on the center of the back wall behind a removable cover for the rear seating positions. Be sure to use an anchor located nearest to the seating position where the child restraint will be placed. Regular and Extended Cab without Rear Seats For regular and extended cab models without rear seats, there is a top tether anchor located behind a removable cover on the back wall behind the right front passenger seat. You may have to pull the seatback forward to access the 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. 1-47