2011 Chevrolet Suburban 1500 Owner's Manual - Page 127

Seats and Restraints 3-65 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. According to accident statistics, children and infants are safer when properly restrained in a child restraint system or infant restraint system secured in a rear seating position. See Where to Put the Restraint on page 3‑60 for additional information. Second Row Seat - 60/40 For models with 60/40 second row seating, the top tether anchors are located at the bottom rear of the seat cushion for each seating position in the second row. 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 For vehicles with a third row seat, there is one top tether anchor located at the bottom rear of the seat cushion that can be used for either the third row center or driver side seating position. Never install two top tethers using the same top tether anchor.