Lumbar Adjustment

Manual Lumbar
Manual Lumbar

If available, move the handle forward or rearward to increase or decrease lumbar support.

Power Lumbar
Power Lumbar

If available, press and hold the front or rear of control to increase or decrease lumbar support. Release the control when the seatback reaches the desired level of lumbar support.

    See also:

    Roadside Assistance Program
    U.S.: 1-888-881-3302 TTY Users (U.S.): 1-888-889-2438 Canada: 1-800-268-6800 Mexico: 01-800-466-0801 As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program. ...

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