2008 Chevrolet HHR Owner's Manual - Page 54

2.3. To secure a child restraint in the rear outboard seating positions find the top tether anchor located on the cargo floor behind the rear seats. If your vehicle does not have a rear seat, find the top tether anchor located on the pillar behind the front passenger seat. 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. 2.4. If the position you are using has an adjustable headrest or head restraint, raise it. 2.5. Route, attach, and tighten the top tether according to your child restraint instructions and the following instructions: If the position you are using does not have a headrest or head restraint and you are using a single tether, route the tether over the seatback. If the position you are using does not have a headrest or head restraint and you are using a dual tether, route the tether over the seatback. If the position you are using has an adjustable headrest or head restraint and you are using a single tether, raise the headrest or head restraint and route the tether under the headrest or head restraint and in between the headrest or head restraint posts. 1-50