Lumbar Adjustment; Reclining Seatbacks; Manual Lumbar; Power Lumbar - GMC 2012 Yukon/Yukon XL Owner's Manual

If equipped, increase or decrease
manual lumbar support by turning
the knob forward or rearward.
See Lumbar Adjustment on
page 3 4 for more information.
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.
On vehicles with four-way
lumbar, press and hold the front
or rear of the control to increase
or decrease lumbar support.
To raise or lower the height of
the support, press and hold the
top or bottom of the control.
See Lumbar Adjustment on
page 3 4 for more information.
To recline a manual seatback:
1. Lift the lever.