Chevrolet TRACKER 2002 Owner's Manual page 53

Once you have the top strap anchored, you'll be
ready to secure the child restraint itself. Tighten the
top strap when and as the child restraint manufacturer's
instructions say.
Your vehicle's top strap anchors for the rear seating
positions are located on the floor of the rear cargo area,
along the outside edge. If your vehicle is equipped with
a luggage compartment cover, remove it before using
the top strap. When routing the top strap at an outboard
seating position, pass it between the head restraint and
the rear seatback.
1-46
When routing the top strap at the center seating position,
be sure to pass it between the rear seatbacks if the top
strap connection to the child restraint is below the top of
the rear seatback.