GMC 2010 Acadia Owner's Manual page 76

3-22 Seats and Restraints
Q: What is wrong with this?
A: The belt is buckled in the wrong
buckle.
WARNING
You can be seriously injured if
your belt is buckled in the wrong
place like this. In a crash, the belt
would go up over your abdomen.
The belt forces would be there,
not on the pelvic bones. This
could cause serious internal
injuries. Always buckle your belt
into the buckle nearest you.
Q: What is wrong with this?
A: The belt is over an armrest.