Cadillac 2008 DTS Owner's Manual page 14

Power Lumbar
Your vehicle may be equipped with four-way lumbar
support, without the massage feature, for the outboard
rear seat positions.
To turn on the lumbar support feature, press the front of
the control to increase support or rearward to decrease
support. The lumbar control can also be moved up
and down to adjust the location of the support.
The ignition does not need to be on for the power
lumbar feature to work.
1-10
The rear lumbar support
controls are located on the
rear doors in front of the
heated seat buttons.
Safety Belts
Safety Belts: They Are for Everyone
This part of the manual tells you how to use safety
belts properly. It also tells you some things you should
not do with safety belts.
CAUTION:
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Do not let anyone ride where he or she cannot
wear a safety belt properly. If you are in a
crash and you are not wearing a safety belt,
your injuries can be much worse. You can hit
things inside the vehicle harder or be ejected
from it and be seriously injured or killed.
In the same crash, you might not be, if you
are buckled up. Always fasten your safety
belt, and check that your passenger(s) are
restrained properly too.