GMC 2012 Canyon - Manual (Page 106)

Black plate (2,1) GMC Canyon Owner Manual - 2012
4-2 Storage
Rear Storage
Extended cab models might have
storage compartments under the
rear seats.
To access the storage
compartments, lift the cushion
on the bottom of the rear seats.
This exposes the storage boxes
under the seat.
To open a storage box, unhook the
bottom and lift the latches on each
side of the storage box. Lift the lid from the center area to
access the storage box.