GMC Yukon Denali 2015 Owner's Manual page 121

3-58 Seats and Restraints
In Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether be
attached.
If the child restraint does not have
the LATCH system, you will be
using the safety belt to secure the
child restraint in this position. Be
sure to follow the instructions that
came with the child restraint. Secure
the child in the child restraint when
and as the instructions say.
If more than one child restraint
needs to be installed in the rear
seat, be sure to read Where to Put
the Restraint on page 3-45.
1. Put the child restraint on
the seat.
For the third row outboard
seating positions, if the head
restraint interferes with the
proper installation of the child
restraint, the head restraint may
be removed. See Head
Restraint Removal and
Reinstallation under Lower
Anchors and Tethers for
Children (LATCH System) on
page 3-46.
2. Pick up the latch plate, and run
the lap and shoulder portions of
the vehicle's safety belt through
or around the restraint. The child
restraint instructions will show
you how.
3. Push the latch plate into the
buckle until it clicks.
If the latch plate will not go fully
into the buckle, check to see if
the correct buckle is being used.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary.