2010 Chevrolet Colorado Regular Cab Owner's Manual - Page 209

If both PTY and TRAF (traffic) are on, the radio searches for stations with the selected PTY and traffic announcements. If the radio cannot find the desired program type, NONE displays and the radio returns to the last tuned station. SCAN: To scan PTYs, press and hold the SEEK / SCAN until a beep sounds. The radio goes to a station, plays for a few seconds, then goes to the next station. BAND (Alternate Frequency): Alternate frequency lets the radio switch to a stronger station with the same program type. To turn alternate frequency on, press and hold BAND for two seconds. AF ON displays. The radio could switch to stations with a stronger frequency. To turn alternate frequency off, press and hold BAND again for two seconds. AF OFF displays. The radio does not switch to other stations. This function does not apply for XM Satellite Radio Service. Setting Preset PTYs (RDS) Only For the Radio with CD player, the six pushbuttons have factory PTY presets. Up to 12 PTYs (six FM1 and six FM2), can be programmed on the numbered pushbuttons. To program PTYs: 1. Press BAND to select FM1 or FM2. 2. Turn the P‐TYPE knob to activate program type select mode. TYPE and the last selected PTY displays. 3. Turn the P‐TYPE knob to select a PTY. 4. Press and hold one of the six numbered pushbuttons until a beep sounds. When that numbered pushbutton is pressed, the PTY that was set, returns. 5. Repeat the steps for each pushbutton. 4-49