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GMC 2007 Sierra - Manual Lumbar; Power Lumbar

GMC 2007 Sierra
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Manual Lumbar
If your vehicle has this feature, the knob is
located on the front of the driver seat lower
cushion on the outboard side. Turn the knob
forward to increase, and rearward to decrease
lumbar support.
Power Lumbar
If the seats have power lumbar, the controls used
to operate this feature are located on the
outboard side of the seats.
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.
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