1996 GMC Savana Van Owner's Manual - Page 11

You can use the center knob to move the seat where you want it. To raise the seat, move the center knob up. To lower the seat, move the center knob down. To move the seat forward, move the center knob toward the front of the vehicle. To move the seat rearward, move the center knob toward the rear of the vehicle. Reclining Seatbacks You can raise and lower the front and rear of the seat. To raise the front of the seat, move the right lever up. To lower it, move the right lever down. To raise the rear of the seat, move the left lever up. To lower it, move the left lever down. To adjust the seatback, lift the front of this lever which is located at the inner edge of the seat cushion. Move the seatback with your body and release the lever to lock the seatback where you want it. Lean forward and pull up on the front of the lever and the seatback will go to an upright position. 1-3