GMC 2008 Savana Van Owner's Manual page 25

Q:
What is wrong with this?
A:
The belt is behind the body.
CAUTION:
{
You can be seriously injured by not wearing
the lap-shoulder belt properly. In a crash,
you would not be restrained by the shoulder
belt. Your body could move too far forward
increasing the chance of head and neck injury.
You might also slide under the lap belt.
The belt force would then be applied right
on the abdomen. That could cause serious
or fatal injuries. The shoulder belt should go
over the shoulder and across the chest.
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