2007 GMC Envoy Owner's Manual - Page 252

AUTO EQ (Automatic Equalization): Press this button to select customized equalization settings designed for country/western, jazz, talk, pop, rock, and classical. To return the bass and treble to the manual mode, push and release the AUTO EQ button until CUSTOM displays. If the radio has the Bose audio system, the equalization settings are either CUSTOM or TALK. To adjust all tone and speaker controls to the middle position, push and hold the AUDIO knob when no tone or speaker control displays. ALL CENTERED displays and a beep sounds. Finding a Program Type (PTY) Station (RDS and XM™) To select and find a desired PTY perform the following: 1. Turn the P-TYPE knob to select a PTY. 2. Once the desired PTY displays, press the SEEK TYPE button to select and go to the PTY's first station. 3. To go to another station within that PTY, press the SEEK TYPE button twice to display the PTY and then to go to another station. 4. Press the P-TYPE knob to exit program type select mode. IF PTY times out and no longer displays, go back to Step 1. If both PTY and TRAF are on, the radio searches for stations with the selected PTY and traffic announcements. Adjusting the Speakers (Balance/Fade) AUDIO: To adjust the balance between the right and the left speakers, push and release the AUDIO knob until BAL (balance) displays. Turn the knob to move the sound toward the right or the left speakers. To adjust the fade between the front and the rear speakers, push and release the AUDIO knob until FADE displays. Turn the knob 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 the AUDIO knob, then push it again and hold it until you hear one beep. 252