1998 Chevrolet Blazer Owner's Manual - Page 180

To unlock a secured radio, see "Unlocking the Theft-Deterrent Feature After a Power Loss" earlier in this section. To help avoid hearingloss or damage: 0 Adjust the volume control to the lowest setting. Increase volume slowly until you hear comfortably and clearly. Understanding Radio Reception AM The range for most AM stations is greater than for FM, especially at night. Thelonger range, however, can cause stations to interfere with each other. AM can pick up noise from thingslike storms and power lines. Try reducing the treble to reduce this noise if you ever get it. I NOTICE: I I FM Stereo FM stereo will give you the best sound, but FM signals will reach only about 10 to 40 miles (16 to 65 km). Tall buildings or hills can interfere with FM signals, causing the soundto come andgo. Tips About Your Audio System Hearing damage from loud noise almost undetectable is until it is too late. Your hearing can adaptto higher volumes of sound. Sound that seems normal can be loud and harmfulto your hearing. Take precautionsby adjusting the volume controlon your radio to a safe sound level before your hearingadapts to it. Before you add any sound equipment to your vehicle like a tape player, CB radio, mobile telephone or two-way radio be sureyou can add whatyou want. If you can, it's very important to do properly. Added sound it equipment may interfere with the operation of your vehicle's engine, Delco Electronics radioor 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 sure to check Federal rules be covering mobileradio and telephone units. -- -- 3-28