Chevrolet 2008 Impala Owner's Manual page 13

Make sure the front seats are not reclined. If they
are, the rear seatbacks will not fold down all the way.
To return the seats to the normal position:
CAUTION:
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If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
push and pull on the seatback to be sure it is
locked.
1. Raise the seatback up and make sure it latches.
2. Lower the seatback(s)
by pulling forward on
the tab located on
the outboard side of the
seatback(s).
CAUTION:
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A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
2. Ensure that the safety belts are properly stowed
over the seatback in all three positions.
3. Flip the bottom seat cushion back into place. Push
firmly on the seat cushion to make sure it is secure.
When the seat is not in use, the seatback should
be placed in upright, locked position, and the seat
cushion should be in the down position.
Under Seat Storage
Your vehicle has under seat storage.
To get to the storage area, lift up on the tab located in
the center of the bottom seat cushion where the
seat cushion meets the seatback. See Rear Storage
Area on page 2-48 for more information.
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