Oldsmobile Silhouette Owner's Manual page 26

If the front latches are not attaching correctly, check
that the seat is in the full rear position.
2. Firmly push the rear hooks onto the rear floor pins
by pushing down on the rear of the seat.
1-20
CAUTION:
A seat that isn't locked into place properly can
move around in a collision or sudden stop. People
in the vehicle could be injured. Be sure to lock
the seat into place properly when installing it.
3. Try to raise the seat to check that it is locked down.
4. Lift the seatback recliner lever or pull the nylon strap
on the back of the seat and raise the seatback until it
locks upright.
5. Push and pull on the seatback to check that it is
locked in place.
CAUTION:
If the seatback isn't locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it
is locked.
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