Power Seat Adjustment; Lumbar Adjustment - GMC 2016 Sierra Owner's Manual

58 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.
If equipped, raise or lower the
front part of the seat cushion by
moving the front of the control
up or down.
If equipped, raise or lower the
seat by moving the rear of the
control up or down.
To adjust the seatback, see
Reclining Seatbacks 0 59.
To adjust the lumbar support, see

Lumbar Adjustment 0 58.

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 0 309.
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.
If equipped, press and hold the
control up to increase upper
lumbar support and decrease
lower lumbar support.
Press and hold the control down
to increase lower lumbar support
and decrease upper lumbar
support.