2004 Cadillac DeVille Owner's Manual - Page 231

Theft-Deterrent Feature THEFTLOCK® is designed to discourage theft of your radio. Your vehicle has a "built in" theft-deterrent feature on each radio that is automatic - there is no programming required. The radio in your vehicle cannot be used in any other vehicle. When the radio was originally installed in your vehicle at the factory, it stored the Vehicle Identification Number (VIN). Each time the ignition is turned on, the VIN is verified. If the vehicle's VIN does not match the VIN stored in the radio, THEFTLOCK® will be activated and the audio system will not play. If the radio is removed from your vehicle, the original VIN in the radio can be used to trace the radio back to your vehicle. Audio Steering Wheel Controls Some audio controls can be adjusted at the steering wheel. They include the following: y VOL z (Volume): Press the up or the down arrows to increase or to decrease volume. y SEL z (Select): While listening to the radio or to a XM™ Satellite Radio Service station, press the up or the down arrows to tune to the next or the previous preset radio station. When a cassette tape is playing, press the up or the down arrow to SEEK forward and rearward through the tape. When a CD is playing, pressing the up or the down arrow to go to the next or the previous track. 3-105