2006 GMC Yukon Owner's Manual - Page 237

Setting Preset Stations Up to 18 stations (six FM1, six FM2, and six AM) can be programmed on the six numbered pushbuttons, by performing the following steps: 1. Turn the radio on. 2. Press AM FM to select FM1, FM2, or AM. 3. Tune in the desired station. 4. Press and hold one of the six numbered pushbuttons until you hear a beep. Whenever that numbered pushbutton is pressed, the station that was set will return. 5. Repeat the steps for each pushbutton. Setting the Tone (Bass/Treble) AUDIO: To adjust bass or treble, press and release AUDIO until BAS or TRE appears on the display. Then press and hold the up or the down arrow to increase or to decrease. If a station is weak or noisy, decrease the treble. To adjust bass or treble to the middle position, select BAS or TRE. Then press and hold AUDIO for more than two seconds until you hear a beep. B and a zero or T and a zero will appear on the display. To adjust all tone and speaker controls to the middle position, first exit 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. 3-77