Lumbar Adjustment; Reclining Seatbacks - GMC Yukon 2015 Owner's Manual

3-4 Seats and Restraints
To adjust the seat:
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 3-4.
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 9-57.

Lumbar Adjustment

To adjust the lumbar support:
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.
If equipped, press and hold the
control down to increase lower
lumbar support and decrease
upper lumbar support.

Reclining Seatbacks

To recline the seatback:
Tilt the top of the control
rearward to recline.