GMC 2004 Canyon - Manual (Page 34)

{ CAUTION:
You can be seriously hurt if your shoulder belt
is too loose. In a crash, you would move
forward too much, which could increase injury.
The shoulder belt should fit against your body.
To unlatch the belt, just push the button on the buckle.
Rear Safety Belt Comfort Guides for
Children and Small Adults
Your vehicle may have rear safety belt comfort guides
for the rear outside positions.
Rear safety belt comfort guides provide added safety
belt comfort for older children who have outgrown
booster seats and for small adults. When attached to a
shoulder belt, the comfort guide better positions the
belt away from the neck and head.
Here is how to attach the comfort guide to the
shoulder belt.
1. Slide the guide off of its storage clip located
between the interior body and the seatback.
1-28