Chevrolet 2011 Impala Owner's Manual page 66

3-18 Seats and Restraints
Q: What is wrong with this?
A: The belt is behind the body.
WARNING
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.
Q: What is wrong with this?
A: The belt is twisted across
the body.