Power Seats - If Equipped; Power Lumbar Adjustment (If Equipped) - GMC 1999 Suburban Owner's Manual

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Power Seat(s) (If Equipped)
If your vehicle has a power seat on the driver's or
passenger's side, you can adjust it with these controls at
the outside edge of the seat. The switch is located on the
side of the seat, next to the door.
You can use the round center knob to move the seat to
where you want it. To raise the seat, move the knob up.
To lower the seat, move the knob down. To move the
seat forward, move the knob toward the front of the
vehicle. To move the seat rearward, move the knob
toward the rear of the vehicle.
You can also raise and lower the front and rear of the seat.
To raise the front of the seat, move the front lever up. To
lower the front of the seat, move the front lever down. To
raise the rear of the seat, move the rear lever up. To lower
the rear of the seat, move the rear lever down.
The switch located at the front of this control panel
is for the power lumbar adjustment, which is
explained next.

Power Lumbar Adjustment (If Equipped)

To increase support, press and hold the front of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
To decrease support, press and hold the rear of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
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If you have power lumbar
adjustment, you can
increase or decrease lumbar
support in an area of the
lower seatback.
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