2003 Chevrolet Astro Owner's Manual - Page 10

Power Seat If your vehicle has this feature, there will be controls located on the inboard side of the driver's seat. Manual Lumbar To raise or lower the front of the seat cushion, raise or lower the lever located toward the front of the vehicle. To raise or lower the rear of the seat cushion, raise or lower the lever located toward the rear of the vehicle. If your vehicle has this feature, there will be a knob located on the inboard side of the driver's and passenger's bucket seats. Turn the knob toward the front of the vehicle to increase lumbar support. Turn the knob toward the rear of the vehicle to decrease lumbar support. To move the entire seat backwards, forward, or up or down, move the center knob. 1-3