GMC 2004 Yokon Denali Owner's Manual page 70

Lower Anchorages and Top Tethers
for Children (LATCH System)
Your vehicle has the LATCH system. You will find
anchors in the center and right side passenger second
row seating positions for bench seats, and the outboard
passenger positions for bucket seats.
This system, designed to make installation of child
restraints easier, does not use the vehicle's safety belts.
Instead, it uses vehicle anchors and child restraint
attachments to secure the restraints. Some restraints
also use another vehicle anchor to secure a top
tether strap.
1-64
A. Lower Anchorage
B. Lower Anchorage
C. Top Tether