Chevrolet 2008 Optra Owner's Manual page 13

To return the seatback to the upright position, do the
following:
CAUTION:
{
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. Lift the seatback up and push firmly on the top of
the seatback until it latches securely in the fully
upright position.
CAUTION:
{
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. Make sure that the safety belts are not twisted or
caught under the seatback.
3. Re-attach the rear center safety belt. Push the
latch plate at the end of the safety belt strap
into the buckle with the release button until the
mechanism clicks. Make sure the strap is not
twisted. The sliding latch plate should face the
front of the vehicle.
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