Buick 2003 Regal Owner's Manual page 20

3. Pick up the latch plate and pull the belt across you.
Don't let it get twisted.
The shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let the belt
go back slightly to unlock it. Then pull the belt
across you more slowly.
4. Push the latch plate into the buckle until it clicks.
Pull up on the latch plate to make sure it is
secure. If the belt isn't long enough, see Safety
Belt Extender on page 1-29.
Make sure the release button
on
the buckle is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
5. To make the lap part tight, pull down
on
the buckle
end of the belt as you pull up on the shoulder belt.
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