Oldsmobile 2000 Silhouette - Manual (Page 95)

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2. Pull the lap belt all the way out without stopping.
3. While holding it out, run the belt through or around
the child restraint. The child restraint instructions
will show you how.
4. Buckle the belt. Make sure the release button is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.