GMC 2018 Acadia Denali Owner's Manual page 94

Not all vehicle seating positions
have lower anchors. In this case,
the seat belt must be used (with top
tether where available) to secure
the child restraint.
See Securing Child Restraints (With
the Seat Belt in the Front Seat)
0 101 or Securing Child Restraints
(With the Seat Belt in the Rear
Seat) 0 99.
Lower Anchors
Lower anchors (1) are metal bars
built into the vehicle. There are two
lower anchors for each LATCH
seating position that will
accommodate a child restraint with
lower attachments (2).
Top Tether Anchor
A top tether (3, 4) is used to secure
the top of the child restraint to the
vehicle. A top tether anchor is built
into the vehicle. The top tether
attachment hook (2) 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.
Seats and Restraints
The child restraint may have a
single tether (3) or a dual tether (4).
Either will have a single attachment
hook (2) to secure the top tether to
the anchor.
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. Be
sure to read and follow the
instructions for your child restraint.
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