Cadillac catera 2001 User Manual

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’d be less
likely to slide under the lap belt. If you slid under it, 
the belt would apply force at 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 safety belt locks if there’s a sudden stop or crash, or
if you pull the belt very quickly out of the retractor.

Before you begin to drive, move the shoulder belt
adjuster to the height that is right for you.

To move it down, press down on the arrow symbol and
move the height adjuster to the desired position. You can
move the adjuster up just by pushing up on the bottom
of the height adjuster. After you move the adjuster to
where you want it, try to move it down without pushing
in to make sure it has locked into position.

Adjust the height so that the shoulder portion of the belt 
is centered on your shoulder. The belt should be away from  
your face and neck, but not falling off your shoulder.