Cadillac STS 2011 Owner's Manual page 62

5. To make the lap part tight, pull up on the
shoulder belt.
It may be necessary to pull stitching on the safety
belt through the latch plate to fully tighten the lap
belt on smaller occupants.
6. This safety belt has a feature that will reduce the
tension of the safety belt on the occupant's
shoulder if the vehicle is on. To set this feature,
gently pull on the belt, or lean forward and then sit
back. The belt will retract and rest lightly against
the occupant.
When the safety belt is unbuckled or when the
vehicle is turned off, the tension reducer will
deactivate. The belt should go back out of the way.
To unlatch the belt, just push the button on the buckle.
Before you close a door, be sure the belt is out of the
way. If you slam the door on it, you can damage both
the belt and your vehicle.
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