2008 GMC Envoy Owner's Manual - Page 205

Adjusting the Speakers (Balance/Fade) AUDIO: To adjust the balance between the right and the left speakers, push and release until BAL (balance) displays. Turn to move the sound toward the right or the left speakers. To adjust the fade between the front and rear speakers, push and release this knob until FADE or FAD displays. Turn to move the sound toward the front or the rear speakers. To adjust the balance or the fade to the middle position while it is displayed, push and hold the AUDIO knob. On some radios, push the AUDIO knob, then push it again and hold it until one beep is heard. To adjust all tone and speaker controls to the middle position, push and hold the AUDIO knob when no tone or speaker controls display. ALL CENTERED displays and a beep is heard. Finding a Program Type (PTY) Station (RDS and XM™) For all Radios except the MP3 Radio, select and find a desired PTY perform the following: 1. Press the TYPE button to activate program type select mode. TYPE or P-TYPE and the last selected PTY displays. 2. Turn the TYPE knob or press and release the TYPE button to select a PTY. 3. Press either SEEK or TYPE arrow to select and to go to the PTY's first station. 4. To go to another station within that PTY, press the TYPE button, then press either SEEK or TYPE arrow once. 5. Press either SEEK or TYPE arrow twice to exit the program type select mode. For the Base Radio, if the radio cannot find the desired program type, NONE displays and the radio returns to the last station you were listening to. 3-71