Buick RIVIERA 1993 Manual page 48

Top Strap Vehicles first sold in Canada have child restraint anchor
'
bracket hardware in the glove box, along with
instructions for installing it. This shouldbe used only
with a child restraint, and only to secure a child restraint
at the center rear seating position. Additional anchor
brackets for child restraints at one or both of the rear
outside seating positions are available at Buick
dealerships in Canada.
If your child restraint has a
anchored.
top strap,
it
should be
If you need to have an anchor installed, you can ask
your Buick dealer to put it in for you. If you want to
install an anchor yourself, your dealer can tell you how
to do it.