GMC 2001 Yukon XL Owner's Manual page 18

Power Lumbar Control (If Equipped)
You can also reshape the side wing area of the lower
seatback for more lateral support.
To increase or decrease support, press and hold the top
or bottom of the control. Let go of the control when the
lower seatback reaches the desired level of support.
To increase or decrease
support, press and hold the
front or rear of the control.
Let go of the control when
the lower seatback reaches
the desired level of support.
Memory Seat (If Equipped)
It does not store the lumbar or back support positions.
To set your memory seat, do the following:
1. Adjust the driver's seat to your desired position.
2. Press the SET button and then press the 1 or 2
side of the memory control within five seconds.
When your vehicle is in PARK (P), press the 1 or 2
button of the memory control to recall the seat setting.
To do the same thing for a second driver, follow the
preceding steps, but press the other number of the
memory control. The memory feature only works when
the transmission is in PARK (P).
The memory function
controls the driver's
seat cushion and recliner
positions and is located
on the driver's door
trim panel.
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