Oldsmobile 2000 Silhouette - Manual (Page 60)

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Rear Seat Outside Passenger Positions Lap - Shoulder Belt
The positions next to the windows have lap - shoulder
belts. Here’s how to wear one properly.
1. 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.
2. Push the latch plate into the buckle until it clicks.