1993 GMC Sonoma Owner's Manual - Page 135

VENT The aircomesoutattheventsonyourinstrumentpanel frontsidewindows. BI-LEV AIC: Withthis,outsideaircomes theinstrumentpanelvents.Thissetting sunlight. and atyour in throughtheheaterfloorventand is useful in coolweatherwithbright If youfirstused MAX, use so outsideairwillbegoing NORM NC: This setting coolstheoutsideair. NORM as soonasthevehiclehascooleddown, through your vehicle. MAX AIC: Thiscoolstheairthefastest.Movetheotherleverallthewayto Cold. MAX lets in only a little airfromtheoutside. You canuse MAXat first when it's reallyhotoutsideandyouneedtocool off quickly. OFF: The blowerisoff,butairstillwillcomefromoutletsatthefrontofyour vehicle. The systemwill try to keeptheairatthechosentemperature. Engine Block Heater If youusetheoptionalengineblockheaterbeforestartingyourengine,your heatingsystemwillproducewarmerairfaster, to heatthepassenger compartmentincoldweather.See"EngineBlock Heater" intheIndex. Audio Systems CAUTION I A 1 Hearing damage from loud noise is almostundetectableuntil it is too late.Your hearing can adapt to highervolumes of sound. Sound that seemsnormal can be loud andharmful to yourhearing. Take precautions by adjustingthevolumecontrolonyourradio to a safe sound level before yourhearingadapts to it. To help avoid hearing loss or damage: * Adjust the volume control to thelowestsetting. * Increase volume slowly until you hearcomfortably and clearly. Your Delco@ audiosystemhasbeendesignedtooperateeasilyandgive years of listeningpleasure.Butyouwillgetthemostenjoyment out of it if youacquaintyourselfwith it first.FindoutwhatyourDelco@systemcando andhow to operateallitscontrols,tobesureyou'regettingthemostout of theadvancedengineering that wentinto it. 3-7