Black plate (4,1)
GMC Sierra Owner Manual - 2012
3-4
Seats and Restraints
Center Seat
If equipped, the center front
seatback doubles as an armrest and
cupholder/storage area for the driver
and passenger when the center
front seat is not used. Do not use it
as a seating position when the
seatback is folded down.
Power Seat Adjustment
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.
To adjust the seatback, see
“
Power
Reclining Seatbacks
”
under
Reclining Seatbacks on page 3
‑
5
.
Lumbar Adjustment
Manual Lumbar
If equipped, increase or decrease
manual lumbar support by turning
the knob forward or rearward.