Chevrolet 2003 Impala Owner's Manual page 177

Digital Audio Broadcast (DAB) (Canada Only): DAB
is a Canadian land-based radio service that offers
digital quality audio and text information including song
title, artist name, traffic, weather, emergency
announcements and more. Digital Audio Broadcast
transmission services are currently available in Toronto,
Montreal, Vancouver, Ottawa, and Windsor. In fringe
areas signals may be interrupted by buildings, trees and
other obstructions. Additional services will be added
in the future. For current DAB coverage and other
information consult the GM Canada website at
www.gmcanada.com, your dealer or call
1-800-263-3777.
Playing the Radio
PWR (Power): Press this knob to turn the system on
and off.
VOL (Volume): Turn the knob to increase or to
decrease volume.
AUTO VOL (Automatic Volume): With automatic
volume, your audio system adjusts automatically
to make up for road and wind noise as you drive.
Set the volume at the desired level. Press this button to
select LOW, MEDIUM or HIGH. AVOL will appear on
the display. Each higher setting will allow for more
volume compensation at faster vehicle speeds. Then as
you drive, automatic volume increases the volume as
necessary to overcome noise at any speed.
3-54
The volume level should always sound the same to you
as you drive. NONE will appear on the display if the
radio cannot determine the vehicle speed. If you don't
want to use automatic volume, select OFF.
DlSP (Display): Push this knob to switch the display
between radio station frequency and time. Time display
is available with the ignition turned off.
For RDS, press this knob to change what appears on
the display while using RDS. The display options
are station name, RDS station frequency, PTY and the
name of the program (if available).
For XMTM (USA only, if your radio is equipped with
XMTM Satellite Radio Service), press this button while in
XM mode to retrieve various pieces of information
related to the current song or channel. By pressing and
releasing the MSG button, you may retrieve four
different categories of information: Artist, Song Title,
Category or PTY, Channel Number/Channel Name.
For DAB (Canada only, if your radio is equipped with
DAB), pushing this knob switches the display between
channel name and PTY name.
To change the default on the display, push the knob
until you see the display you want, then hold the knob
for two seconds. The radio will produce one beep
and selected display will now be the default.