GMC Yukon XL Denali Owner's Manual page 69

WARNING
If either seatback is not locked, it
could move forward in a sudden
stop or crash. That could cause
injury to the person sitting there.
Always push and pull on the
seatbacks to be sure they are
locked.
6. Push and pull on the seatback to
make sure it is locked.
Removing the Third Row Seat
To remove the seat:
1. Open the liftgate to access the
controls for the seat.
2. Fold the seatbacks forward
using lever 1 and the
instructions listed previously
under Folding the Seatback.
The seat cannot be unlatched
from the floor unless the
seatback is folded.
3. Unlatch the seat from the floor
by pulling the handle at the rear
of the seat 3 Removal Only
toward the rear of the vehicle.
4. Roll the seat out of the vehicle.
There is a track in the floor to
guide the seat wheels out of the
vehicle.
Seats and Restraints
Installing the Third Row Seat
To install the seat:
1. Open the liftgate to access the
rear of the vehicle.
2. Slide the front outboard seat
wheels into the track on the floor
and roll the seat forward. The
front latches should lock into
place. If the latches do not lock,
try tilting the rear of the seat
upward slightly.
3. Lower the rear of the seat and
push down on the seat to
engage the rear floor latches.
WARNING
A seat that is not locked into
place properly can move around
in a collision or sudden stop.
People in the vehicle could be
injured. Be sure to lock the seat
into place properly when
installing it.
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