Cadillac CTS Owner's Manual page 56

Top Tether Anchor
A top tether (A, C) anchors the top of the child
restraint to the vehicle. A top tether anchor is built
into the vehicle. The top tether attachment (B)
on the child restraint connects to the top tether
anchor in the vehicle in order to reduce the forward
movement and rotation of the child restraint
during driving or in a crash.
Your child restraint may have a single tether (A)
or a dual tether (C). Either will have a single
attachment (B) to secure the top tether to
the anchor.
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Some child restraints with top tethers are designed
for use with or without the top tether being attached.
Others require the top tether always to be attached.
In Canada, the law requires that forward-facing
child restraints have a top tether, and that the tether
be attached. In the United States, some child
restraints also have a top tether. Be sure to read
and follow the instructions for your child restraint.
If the child restraint does not have a top tether,
one can be obtained, in kit form, for many child
restraints. Ask the child restraint manufacturer
whether or not a kit is available.
Lower Anchor and Top Tether Anchor
Locations
Rear Seat
i
(Top Tether Anchor):
Seating positions with
top tether anchors.
j
(Lower Anchor):
Seating positions with
two lower anchors.