Cadillac CTS 2008 Owner's Manual page 247

To connect and control your iPod, connect one end of
the specially purchased iPod connection cable to
the iPod's dock connector. Connect the other end to
both the USB port and the auxiliary input jack. The USB
port and the auxiliary input jack are located in the
center console bin. If the vehicle is on and the USB
connection works, you will see a GM logo appear
on your iPod. Your iPod music will display on your
radio's display and begin playing through your vehicle
radio system.
A standard iPod USB cable, like the one that came with
your iPod, cannot be used to connect an iPod to your
vehicle. You must use the iPod connection cable
that was purchased with your vehicle or that was made
available from your dealer/retailer in order for this
feature to work.
Use the radio Menu/Select knob to bring up the iPod
Menu and select Songs, Artists, Albums, Playlists
and Audio books to play from your iPod.
Your iPod will charge while it is connected to
your vehicle and if your vehicle is turned to ACC/
ACCESSORY or ON/RUN. It can also be left connected
to your vehicle while the vehicle is turned off or removed.
With the vehicle turned off, the iPod will automatically be
powered off and will not charge or draw power from the
vehicle's battery.
If you have an older iPod model that is not supported or
do not have the special iPod connection cable, you
can still listen to your iPod in your vehicle by connecting
it to the Auxiliary Input Jack using a standard 3.5 mm
(1/8 inch) stereo cable. See "Using the Auxiliary
Input Jack" earlier for more information.
Press the AM/FM, XM or HDD buttons to listen to one
of these sources while an iPod is connected. If a disc is
inserted, press the CD/AUX button to listen to a CD
or DVD-A disc. Press the CD/AUX button again to start
playing and controlling the connected iPod.
To properly dismount the iPod USB device before
disconnecting from the vehicle, press the button directly
under the EJECT label found on the iPod playback
screen.
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