the lumbar part of my driver side seat

does anyone know about this? my controls on the doorwork fine to move the seat back and forth, but the lumbar part which controls the recline ( the switch is on the side of the seat, just one single switch) wont move my seat back up. ive replaced the motor and the switch 2 times, does anyone know what how i can manually make the back of the seat lift up, im selling mthe car and the guy who is buying it is like 5' tall, and cant see over the steering wheel unless it is lifted up. HELP!

Welcome to AF.


What make year and model GM car is this?