Power Seat Adjustment; Lumbar Adjustment - GMC Sierra 2014 Owner's Manual

3-4 Seats and Restraints

Power Seat Adjustment

To adjust a power seat, if equipped:
Move the seat forward or
rearward by sliding the control
forward or rearward.
Raise or lower the front part of
the seat cushion by moving the
front of the control up or down.
Raise or lower the seat by
moving the rear of the control up
or down.
To adjust the seatback, see
Reclining Seatbacks on page 3-5.
To adjust the lumbar support, see
Lumbar Adjustment on page 3-4.
Some vehicles are equipped with a
feature that activates a vibrating
pulse alert in the driver seat to help
the driver avoid crashes. See Driver
Assistance Systems on page 9-60.

Lumbar Adjustment

Manual Lumbar
If equipped, move the lever up or
down repeatedly to increase or
decrease lumbar support.
Power Lumbar
To adjust the power lumbar support,
if equipped:
Press and hold the control
forward to increase or rearward
to decrease upper and lower
lumbar support at the same time.