GMC Yukon Denalid Owner's Manual page 79

Do not secure a child restraint in the right front
passenger position or the third row passenger side
seating position if your vehicle has a third row
seat, if a national or local law requires that the top
tether be attached, or if the instructions that
come with the child restraint say that the top tether
must be attached. There is no place to attach
the top tether in these positions.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. See Where to Put the Restraint on page 72
for additional information.
Securing a Child Restraint Designed for
the LATCH System
CAUTION:
{
If a LATCH-type child restraint is not
attached to anchors, the restraint will not
be able to protect the child correctly. In a
crash, the child could be seriously injured
or killed. Make sure that a LATCH-type
child restraint is properly installed using
the anchors, or use the vehicle's safety
belts to secure the restraint, following the
instructions that came with that restraint,
and also the instructions in this manual.
79