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GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
1-12
In Brief
Power Seats
To adjust a power seat, if equipped:
.
Move the seat forward or
rearward by sliding the control
forward or rearward.
.
If available, raise or lower the
front or rear part of the seat
cushion by moving the front or
rear of the control up or down.
.
If available, raise or lower the
entire seat by moving the entire
control up or down.
See
Power Seat Adjustment on
page 3
‑
4
.
Lumbar Adjustment
Manual Lumbar
If equipped, increase or decrease
manual lumbar support by turning
the knob forward or rearward.
See
Lumbar Adjustment on
page 3
‑
4
.
Power Lumbar
To adjust the power lumbar support,
if equipped:
.
On vehicles with two-way
lumbar, press and hold the top
or bottom of the control to
increase or decrease lumbar
support.