Pontiac Vibe 2003 Owner's Manual page 13

Rear Seats
Rear Folding Seatback
You can fold either side of the seatback down for more
cargo space. The rear right side seatback can also be
used as a temporary table when the vehicle is stopped.
Make sure the front seatback isn't reclined or in the
rearward most position. If it is, the rear seatback won't
fold down all the way.
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.
1-6
CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted won't 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.