GMC 2002 Yukon XL Owner's Manual page 71

Tahoe/Suburban/Yukon/Yukon XL models with rear
seats: A child restraint with a top strap should only be
used in the second or third row. Don't use a child
restraint with a top strap in the front seat because there's
no place to anchor the top strap.
An anchor loop bracket for a top strap is located at the
bottom rear of the seat cushion for each seating position
in the second row, and for the center seating position in
the third row.
Suburban/Yukon XL Second Row Seat,
Bucket Seats Similar.
1-64