2003 GMC Sierra 1500 Pickup Owner's Manual - Page 230

AUTO EQ (Automatic Equalization): Press this button to choose bass and treble equalization settings designed for country/western, jazz, talk, pop, rock and classical stations. To return the bass and treble to the custom mode, press and release the AUDIO knob, CUSTOM appears. until If you radiois equipped withthe Bose audio system, your equalization settings are either CUSTOM or TALK. Finding a PTY Station (RDS, XMTM and DAB) To select and find a desired PTY perform the following: 1. Turn the P-TYPE LIST knob. TYPE and a PTY will appear on the display. 2. Select a category by turning the P-TYPE LIST knob. Adjusting the Speakers (Balance/Fade) AUDIO: To adjust the balance to the right and the left speakers, push and release the AUDIO knob until BAL appears on the display. Turn the knob to move the sound toward the right or the left speakers. To adjust the fade to the front and the rear speakers, push and release the AUDIO knob until FADE appears on the display. Turn the knob to move the sound toward the front or the rear speakers. To adjust the balance and fade to the middle position, push the AUDIO knob then push it again and hold it until the radio produces one beep. The balance and fade will be adjusted to the middle position and the display will show the speaker balance. To adjustall tone and speaker controls to the middle position, pushand hold the AUDIO knob when no tone or speaker controlis displayed. The radio will produce one beep and display ALL with level display in the middle the position. 3. Once the desired category is displayed, press the SEEK TYPE button or one of the SEEK arrows to take you to the category's first station. 4. If you want to go to another station within that category and the category is displayed, press the SEEK TYPE button once. If the category is not displayed, press the SEEK TYPE button twice to display the category and then to go to another station. If the radio cannot find the desired program type, NONE will appear on the display and the radio will return to the last station you were listening to. 3-75