Chevrolet Captiva Owner's Manual page 37

Do not have a seatback reclined if the
vehicle is moving.
Manual Reclining Seatback
(Passenger's Seat)
Warning
You can lose control of the vehicle if
you try to adjust a driver seat while
the vehicle is moving.
Adjust the driver seat only when the
vehicle is not moving.
Warning
If either 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 seatbacks to be sure
they are locked.
Seats and Restraints 2-7
To recline a Manual Seatback:
1. Lift the lever.
2. Move the seatback to the desired
position, and then release the lever
to lock the seatback in place.
3. Push and pull on the seatback to
make sure it is locked.