2003 GMC Sierra 1500 Pickup Owner's Manual - Page 238

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. 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, push this knob to change what appears on the display while using RBS. 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 XMTMSatellite Radio Service), push this knob while in XM mode to retrieve various pieces of information related to thecurrent song or channel. By pressing and releasing this knob, 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 this 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. Playing the Radio PWR (Power): Press this knob to turn the system on and off. VOL (Volume): Turn decrease volume. this knob to increase or to 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. 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. 3-83