2010 GMC SIERRA lumbar support

Manual Lumbar
If equipped, this control is
located on the outboard
side of the seat.
Increase or decrease lumbar support by turning the
knob forward or rearward.
Power Lumbar
If equipped, this control is located on the outboard side
of the seat.
1-10

On vehicles with two-way lumbar, press and hold
the top of the control to increase lumbar support.
To decrease, press and hold the bottom of the control.
On vehicles with four-way lumbar, press and hold
the front of the control to increase lumbar support.
To decrease, press and hold the rear of the control.
To raise the height of the support, press and hold the
top of the control. To lower, press and hold the bottom
of the control.
SeePower Lumbar on page 2‑7.Manual Reclining Seatbacks
If equipped, this control is located on the outboard side
of the seat.
To recline the seatback:
1. Lift the recline lever.
2. Move the seatback to the desired position, then release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
See Reclining Seatbacks on page 2‑10.
1-11

Your vehicle may have additional features to adjust your
vehicle's power seat:
.Raise or lower the front part of the seat cushion by
moving the front of the control up or down.
.Raise or lower the rear part of the seat cushion by
moving the rear of the control up or down.
.Raise or lower the entire seat by moving the entire
control up or down.
On seats with power reclining seatbacks, the control is
located behind the power seat control on the outboard
side of the seats. See “Power Reclining Seatbacks”
under Reclining Seatbacks on page 2‑10.
A vehicle with a memory function allows seat settings to
be saved and recalled. See Memory Seat, Mirrors, and
Pedals
on page 2‑8for more information.
Manual Lumbar
On vehicles with this feature the control is located on
the outboard side of the seat.
Increase or decrease lumbar support by turning the
knob forward or rearward.
2-6

Power Lumbar
On seats with power lumbar, the controls used to
operate this feature are located on the outboard side of
the seats.
This vehicle may have 2–way lumbar.
.To increase lumbar support, press and hold the top
of the control.
.To decrease lumbar support, press and hold the
bottom of the control.The vehicle may have 4–way lumbar.
.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.
Your vehicle may have a memory function which allows
seat settings to be saved and recalled. See Memory
Seat, Mirrors, and Pedals
on page 2‑8for more
information.
Keep in mind that as your seating position changes, as
it may during long trips, so should the position of your
lumbar support. Adjust the seat as needed.
2-7