2000 GMC Envoy Owner's Manual - Page 161

To unlock a secured radio, see "Unlocking the Theft-Deterrent Feature After a Power Loss" earlier in this section. SEEK: Press the up arrow to tune to the next radio station and the down arrow to tune to the previous radio station. If a cassette tape or compact disc is playing, the player will advance with the up arrow and reverse with the down arrow. MUTE: Press this button to silence the system. Press it again to turn on the sound. VOL: Press the up or down arrow to increase or decrease volume. Audio Steering Wheel Controls You can control certain radio functions using the buttons on your steering wheel. PROG: Press this button to play a station you have programmed on the radio preset buttons on the selected band. If a cassette tape is playing, press this button to play the other side of the tape. If a compact disc is playing in the console-mounted CD changer, press this button to go to the next available CD. 3-24