GMC 2007 Yukon XL Owner's Manual page 16

To return the seatback to an upright position, do
the following:
1. Lift the lever fully without applying pressure to
the seatback and the seatback will return to
the upright position.
2. Push and pull on the seatback to make sure it
is locked.
Power Reclining Seatbacks
Driver's Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
16
If the seats have power reclining seatbacks, the
control used to recline them is located on the
outboard side of the seat behind the power seat
control.
•
To recline the seatback, tilt the top of the
control rearward.
•
To bring the seatback forward, tilt the top of
the control forward.