Hummer 2006 H3 Owner's Manual page 34

3. Be sure that the belt is not twisted and it lies flat.
The guide must be on top of the belt.
CAUTION:
{
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. 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.
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