1999 GMC Sierra 1500 Pickup Owner's Manual - Page 169

Audio Systems Your Delco@audiosystemhasbeendesigned to operateeasilyandgive years of listeningpleasure.Butyouwillgetthemostenjoymentout of it, if youacquaintyourselfwith it first.FindoutwhatyourDelco@systemcando andhowtooperateallitscontrols, to besureyou'regettingthemostout of it. theadvancedengineeringthatwentinto Hearingdamagefrom loud noise is almostundetectableuntil it is too late. Your hearingcanadapttohighervolumesofsound.Soundthat seemsnormalcanbe loud andharmful to yourhearing.Take precautions by adjustingthevolume control onyourradio to asafe sound level beforehearingadapts to it. To help avoid hearing loss ordamage: I a s - Adjustthevolumecontrol to thelowestsetting. Increasevolumeslowlyuntilyouhearcomfortablyandclearly. I NOTICE I FM Stereo FM stereowillgiveyouthebestsound. But FM signals will reachonlyabout 10 to 40 miles (16 to 65 km).And, tall buildings or hillscaninterferewith FM signals,causingthesound to comeandgo. AM Therangeformost AM stationsisgreaterthanfor FM, especiallyatnight. Thelongerrange,however,cancausestations to interferewitheachother. AM canpickupnoisefromthingslikeelectricalstormsandpowerlines.If try reducingthetrebletolessenthe thenoiseinterfereswithyourlistening, noise. 3-9