GMC Yukon Denali 2015 Owner's Manual page 111

3-48 Seats and Restraints
The child restraint may have a
single tether (3) or a dual tether (4).
Either will have a single
attachment (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. In
Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether be
attached. Be sure to read and follow
the instructions for your child
restraint.
Lower Anchor and Top Tether
Anchor Locations
Second Row
(Lower Anchor): Seating
positions with two lower anchors.
(Top Tether Anchor): Seating
positions with top tether anchors.
Second Row
(Lower Anchor): Seating
positions with two lower anchors.
60/40
(Top Tether Anchor): Seating
positions with top tether anchors.
Bucket