Oldsmobile 2001 Silhouette Owner's Manual page 22

2. The seat can then be lifted off the front floor pins
and removed from the vehicle.
1-16
Replacing the Captain's Chairs
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.
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.