GM Service Manual Online
For 1990-2009 cars only

If the seats have power lumbar, the controls used to operate this feature are located on the outboard side of the seats. See Power Seats for more information.

    • To increase lumbar support, press and hold the front of the control.
    • To decrease lumbar support, press and hold the rear of the control.
    • To raise the height of the lumbar support, press and hold the top of the control.
    • To lower the height of the lumbar support, press and hold the bottom of the control.

Release the control when the lower seatback reaches the desired level of lumbar support.

You may need to adjust the lumbar support whenever you change your seating position.