Buick 2006 Rainier - Manual (Page 10)

To heat only the seatback, press the button with the
words BACK ONLY. An indicator light on the switch will
glow to designate that only the seatback is being
heated. Additional presses will cycle through the heat
levels for the seatback only.
The feature will shut off automatically when the ignition
is turned off.
Power Reclining Seatbacks
Your vehicle may have this feature. The vertical
power seat control described earlier allows the
seatback to recline. See Power Seats on page 1-2
for more information.
But do not have a seatback reclined if your vehicle
is moving.
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