GMC T-Series 2007, Owner'S Manual, Page: 40 / 356

To unlatch the belt, push the button on the buckle.
The belt should go back out of the way.
Before you close the 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.
Shoulder Belt Height Adjustment
Before you begin to drive, move the shoulder belt
height adjuster to the height that is right for you.
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. Improper shoulder belt
height adjustment could reduce the effectiveness
of the safety belt in a crash.
To move it down, press
in at the top of the
arrows and move the
height adjuster to
the desired position.
You can move the
height adjuster up just
by pushing up on
the shoulder belt guide.
After you move the height adjuster to where you
want it, try to move it down without pressing
in to make sure it has locked into position.
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