GMC 2008 Acadia - Manual (Page 37)

For the third row center position, locate the comfort
guide which is located in a storage pocket, at
the top of the seat, under the headrest on the
driver’s side of the vehicle. To access the comfort
guide, you will first need to move the headrest
forward by pulling on the handle behind the
seatback. The comfort guide will now be accessible.
Pull the comfort guide out
of its storage location and
then return the headrest
to its upright position.
The elastic cord on the comfort guide is adjustable.
You can make it longer or shorter by squeezing
both ends of the plastic adjuster.
2. Place the guide over the belt, and insert the two
edges of the belt into the slots of the guide.
Third Row Center
Position
1-33