GMC 2002 Yukon Denali Owner's Manual page 23

Removing the 50/50 Split Bench Seat
To remove the 50/50 split bench seat, do the following:
1. Open the liftgate.
1-16
5. Pull up on the release
lever labeled 1 and then
pull up on the seatback
or the assist strap
located on the outboard
side of the seat until the
seatback locks into the
upright position.
2. Fold the seatback
forward onto the seat
cushion by using the
lever labeled 1. The
seat cannot be removed
unless the seatback
is folded.
3. To unlatch the rear of
the seat from the floor,
pull up on the release
lever labeled 2, at the
rear of the seat, and lift
the rear of the seat up
from the floor.