GMC Chevrolet Tahoe 2011 Owner's Manual page 125

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.
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.
Seats and Restraints
Second Row
(Lower Anchor): Seating
positions with two lower anchors.
60/40
(Top Tether Anchor): Seating
positions with top tether anchors.
3-63
Bucket