GMC 2011 Sierra Denali Owner's Manual page 77

3. Be sure that the belt is not
twisted and it lies flat. The
elastic cord must be under the
belt and the guide on top.
WARNING
A safety belt that is not properly
worn may not provide the
protection needed in a crash.
The person wearing the belt could
be seriously injured. 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.
Seats and Restraints
4. Buckle, position, and release
the safety belt as described
previously in this section.
Make sure the shoulder portion
of the belt is on the shoulder and
not falling off of it. The belt
should be close to, but not
contacting, the neck.
To remove and store the comfort
guide, squeeze the belt edges
together so that the safety belt can
be removed from the guide. Slide
the guide into its storage pocket on
the side of the seat.
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