Yukon XL 4WD V8-6.0L (2007)
On the right and left side of the seatback, insert a flat-bladed tool in between the lower half of the seatback and the seat cushion to release the retainer
tabs.
Carefully pull back on the seatback and tilt outward as shown. Follow steps 5 and 6 to disengage the seatback at the bottom. All released tabs must be
clear of obstructions.