1997 GMC Sonoma Owner's Manual - Page 128

PUSHBUTTONS: The six numbered pushbuttons let you return to your favorite stations. You can set up to 18 stations (six AM, six FMl and six FM2). Just: 1. Turn the radio on. P.SCAN: The preset scan button lets you scan through your favorite stations stored on your pushbuttons. Select either the AM, FMl or FM2mode and then press P.SCAN. It will scan through each station stored on your pushbuttons and stop for a few seconds before continuing to scan through all of the pushbuttons. Press P.SCAN again or oneof the pushbuttons to stop scanning tolisten to a specificstored station. P.SCAN will light up on the display while in this mode. If one of the stations stored on a pushbutton is too weak for the location you are in, the radio will skip the preset station and the radio display will show the channel number (PI through P6) for several seconds before advancing to the next preset station. 2. Press AM-FM to select the band. 3. Tune in the desired station. 4. Press AUTO TONE to select the setting you prefer. 5. Press and hold one of the four pushbuttons. The sound will mute. When it returns, release the button. Whenever you press that numbered button, the station you set will return and the tone you selected will be automatically selected for that button. 6. Repeat the steps for each pushbutton. 3-14