Buick 2011 LaCrosse Owner's Manual page 105

3-52 Seats and Restraints
Lower Anchor and Top Tether
Anchor Locations
Rear Seat
(Top Tether Anchor): Seating
positions with top tether anchors.
(Lower Anchor): Seating
positions with two lower anchors.
To assist you in locating the lower
anchors, each rear anchor position
has a label, near the crease
between the seatback and the seat
cushion.
To assist you in locating the top
tether anchors, the top tether anchor
symbol is located on the cover.
The top tether anchors are located
under the covers, behind the rear
seat, on the filler panel. 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.