Cadillac 2008 Escalade EXT Owner's Manual page 22

Sit up straight and always keep your feet on the floor
in front of you. The lap part of the belt should be
worn low and snug on the hips, just touching the thighs.
In a crash, this applies force to the strong pelvic
bones and you would be less likely to slide under the
lap belt. If you slid under it, the belt would apply force on
your abdomen. This could cause serious or even fatal
injuries. 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.
The shoulder belt locks if there is a sudden stop
or crash.
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