2004 Pontiac Bonneville Owner's Manual - Page 10

Power Lumbar If your vehicle has this feature, the power lumbar control is located on the outboard side of each front seat. Use the power seat control first to get the proper position. Then continue with the lumbar adjustment. Keep in mind that as your seating position changes, as it may during long trips, so should the position of your lumbar support. Adjust the seat as needed. If you have the independent front cushion moved down as far as it will go, you may feel the lumbar support higher in your back. Readjust the location of the cushion until you are comfortable. You may also want to adjust the seatback for maximum comfort. To reshape the lower seatback, press the lumbar control forward to increase support and rearward to decrease support. Press the control up or down to raise or lower the support mechanism. 1-4