GMC 2010 Savana 1500 Cargo Owner's Manual page 52

3. Be sure that the belt is not twisted and it lies flat.
The elastic cord must be under the belt and the
guide on top.
WARNING:
{
A safety belt that is not properly worn may not
provide the protection needed in a crash. The
person wearing the belt could be seriously injured.
2-28
WARNING: (Continued)
WARNING: (Continued)
The shoulder belt should go over the shoulder and
across the chest. These parts of the body are best
able to take belt restraining forces.
4. Buckle, position, and release the safety belt as
described in previously in this section. Make
sure that the shoulder belt crosses the shoulder.
To remove and store the comfort guide, squeeze the
belt edges together so that the safety belt can be
removed from the guide. Slide the guide into its storage
pocket on the side of the seatback.