2005 Chevrolet Venture Owner's Manual - Page 129

To adjust both tone controls and both speaker controls to the middle position, first end out of audio mode by pressing another button, causing the radio to perform that function, or by waiting five seconds for the display to return to time of day. Then press and hold AUDIO for more than two seconds until you hear a beep. CEN will appear on the display. Radio with CD (Base Level) Radio Messages CAL (Calibration): The audio system has been calibrated for your vehicle from the factory. If CAL appears on the display it means that the radio has not been configured properly for your vehicle and must be returned to the dealer for service. LOC (Locked): This message is displayed when the THEFTLOCK® system has locked up. Take the vehicle to the dealer for service. If any error occurs repeatedly or if an error cannot be corrected, contact your dealer. Radio Data System (RDS) The audio system has a Radio Data System (RDS). RDS features are available for use only on FM stations that broadcast RDS information. With RDS, the radio can do the following: • Seek to stations broadcasting the selected type of programming • Receive announcements concerning local and national emergencies • Display messages from radio stations • Seek to stations with traffic announcements 3-59