2005 Buick Rendezvous Owner's Manual - Page 220

TRAF (Traffic): If TRAF appears on the display, the tuned station broadcasts traffic announcements. Press this button to receive the traffic announcement from the station and brackets will be displayed around TRAF. When a traffic announcement comes on the tuned radio station you will hear it. If the station does not broadcast traffic announcements, press the TRAF button and the radio will seek to a station that does. When a station that broadcasts traffic announcements is found, the radio will stop seeking and brackets will be displayed around TRAF. If no station is found that broadcasts traffic announcements, NO TRAFFIC will appear on the display. If the brackets are on the display and TRAF is not, press the TRAF button to remove the brackets or use the TUNE knob or the SEEK arrows to go to a station that broadcasts traffic announcements. If no station is found that broadcasts traffic announcements, NO TRAFFIC will appear on the display. The radio will play the traffic announcements if the volume is low. The radio will interrupt the play of a CD if the last tuned station broadcasts traffic announcements and the brackets are displayed. This function does not apply to XM™ Satellite Radio Service. Radio Messages CAL (CALIBRATE): 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. 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. 3-82