GM Service Manual Online
For 1990-2009 cars only

Object Number: 928078  Size: A3

The driver and passenger seatback lumbar support switches are located on the outboard sides of the seats.

    • Use the power seat controls first to get the proper position, then continue with the lumbar adjustment.
    • The top lumbar switch adjusts support to the middle seatback and the bottom lumbar switch adjusts support to the lower seatback.
    • Press the front of the switch to increase support and the rear of the switch to decrease support.

Remember to readjust lumbar support as your seating position changes.