1997 GMC Suburban Owner's Manual - Page 13

Power Driver'sSeat (If Equipped) You can use the round center knob to move the seat to where you want it. To raise the seat, move the knob up. To lower the seat, move the knob down. To move the seat forward, move the knob toward the front of the vehicle. To move the seat rearward, move the knob toward the rear of the vehicle. You can alsoraise and lower the front and rear of the seat. To raise the front of the seat, move the front lever up. To lower the front of the seat, move the front lever down. To raise the rear of the seat, move the rear lever up. To lower the rear of the seat, move the rear lever down. If your vehicle has a power seat on the driver's side, you can adjust it with these controls at the outside edge of the seat.