GMC Yukon Denali 2013 Owner's Manual page 55

Front Seats
Power 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 a power seat:
Move the seat forward or
rearward by sliding the control
forward or rearward.
Raise or lower the front or rear
part of the seat cushion by
moving the front or rear of the
control up or down.
Raise or lower the entire seat by
moving the entire control up
or down.
To adjust the seatback, see
Reclining Seatbacks on page 3 4.
Seats and Restraints
Lumbar Adjustment
To adjust the lumbar support:
Press and hold the front or rear
of the control to increase or
decrease lumbar support.
Press and hold the top or bottom
of the control to raise or lower
the height of the lumbar support.
3-3