Chevrolet 2010 Avalanche, Owner'S Manual, Page: 55 / 582

Occupants who are not buckled up can be thrown out of
the vehicle in a crash. And they can strike others in the
vehicle who are wearing safety belts.
First, before you or your passenger(s) wear a safety
belt, there is important information you should know.
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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