GMC Yukon XL 2013 Owner's Manual page 61

Front Seats
Seat Adjustment
WARNING
You can lose control of the
vehicle if you try to adjust a driver
seat while the vehicle is moving.
Adjust the driver seat only when
the vehicle is not moving.
To adjust the seat:
1. Lift the bar under the front edge
of the seat cushion to unlock
the seat.
2. Slide the seat to the desired
position and release the bar.
3. Try to move the seat back and
forth to be sure the seat is
locked in place.
Seats and Restraints
Center Seat
If equipped, the center front
seatback doubles as an armrest and
cupholder/storage area for the driver
and passenger when the center
front seat is not used. Do not use it
as a seating position when the
seatback is folded down.
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