GM Service Manual Online
For 1990-2009 cars only

If your vehicle has a split bench seat in the second row, use the clip on the safety belt to secure the belt after it is disconnected from the mini-buckle. When removing the second row split bench seat, secure the loose end of the safety belt in this clip. This will keep the safety belt from dangling and possibly striking something.

Do not have the second row outside safety belt stored if someone is sitting in the second row outside position.