Chevrolet Trax Owner's Manual page 67

Caution
When returning rear seatback to
the upright position, place the rear
safety belt and buckles between
the rear seatback and one cushion.
Make sure the rear safety belt and
buckles not to be pinched under
the rear seat cushion.
Make sure the safety belts are not
twisted or caught in the seatback
and are arranged in their proper
position.
{Warning
Ensure that the rear seatbacks are
all the way back and locked in
position before operating the
vehicle with passengers in the rear
seat.
Do not pull the release levers on
the top of the seatback while the
vehicle is moving.
It can cause injuries or damage to
the occupants.
Caution
Folding a rear seat with the safety
belts still fastened may cause
damage to the seat or the safety
belts.
Always unbuckle the safety belts
and return them to their normal
stowed position before folding a
rear seat.
Storage 65
{Warning
Never allow passengers to sit on
top of the folded down seatback,
while the car is moving as this is
not a proper seating position and
no safety belts are available for
use.
This could result in serious injury or
death in case of an accident or
sudden stop.
Objects carried on the folded down
seatback should not extend higher
than the top of the front seats. This
could allow cargo to slide forward
and cause injury or damage during
sudden stops.