1997 GMC Savana Van Owner's Manual - Page 152

Tips About Your Audio System Hearing damage from loud noise is almost undetectable until it is too late. Your hearing can adapt to higher volumes of sound. Sound that seems normal can loud be and harmful to your hearing. Take precautionsby adjusting the volumecontrol on your radio to a safe sound level before your hearing adapts to it. NOTICE: Before youadd any sound equipment to your vehicle like a tape player, CB radio, mobile telephone or two-way radio be sure you can add what you want. If you can, it's very important to do it properly. Added sound equipment may interfere with the operation of your vehicle's engine, Delco radio or other systems, and even damage them. Your vehicle's systems mayinterfere with the operation of sound equipment that has been added improperly. So, before adding sound equipment, check with your dealer and be sure to check Federal rules covering mobile radio andtelephone units. -- -- To help avoid hearing loss or damage: Adjust the volume control to the lowest setting. Increase volume slowly until you hear comfortably and clearly. 3-26