Buick 1993 Roadmaster Owner's Manual page 20

Head Restraints
Slide the head restraint up or down so
that the top .of the
restraint is closest to the top of your ears.
This position reduces the chance of a neck injury in a
crash.
On some models, the head restraints tilt forward 'and
rearward also.
Wagon Folding Seatbacks
Second Seatback Operation
The second seatback release: button is located next to the
seatback on the passenger side of. the vehicle.
To lower the seat, push this button and pull the seatback
forward and down.