1998 GMC Savana Van Owner's Manual - Page 160

Tips About Your Audio System Hearing damage from loud noise is almost undetectable until it is too late. Your hearing can adaptto higher volumes of sound. Sound that seems normalcan be loud and harmful to your hearing. Take precautions by adjusting the volume control on your radio to a safe sound level beforeyour hearing adapts to it. NOTICE: Before you add any sound equipment to your vehicle like a tapeplayer, CB radio, mobile telephone or two-way radio be sureyou can add what you want. If you can, it's very important to do it properly. Added sound equipment may interfere with the operationof your vehicle's engine, Delco Electronics radio or other systems, and even damage them. Your vehicle's systems may interfere with the been operation of sound equipment that has added improperly. So, before adding sound equipment, check with your dealer and be sure to check Federal rules covering mobile radio and telephone units. -- -- To help avoid hearing lossor damage: Adjust the volume control to the lowest setting. Increase volume slowly until you hear comfortably and clearly. 3-24