Buick 2004 Rainier Owner's Manual page 23

Q:
What's wrong with this?
A:
The shoulder belt is worn under the arm.
It should be worn over the shoulder at all times.
CAUTION:
{
You can be seriously injured if you wear
the shoulder belt under your arm. In a crash,
your body would move too far forward, which
would increase the chance of head and neck
injury. Also, the belt would apply too much
force to the ribs, which aren't as strong as
shoulder bones. You could also severely injure
internal organs like your liver or spleen.
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