GMC Yukon 2007 Owner's Manual page 46

Q:
What is wrong with this?
A:
The shoulder belt is too loose. It will not give
nearly as much protection this way.
46
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.