User Manual

GMOS-06
4
1) Turntheignitiononifnotalready,andthenturntheradioontoverifythatthe
radioworks.Checkbalanceandfadercontrolsforproperoperation.
2) PushtheOnstarbutton(ifequipped)toverifyOnstarisworking.Theradio
willshutofformute,dependingiftheBrownwireonthe16-pinharnessis connected,andOnstarwillbeheardthroughthefrontspeakers.TurnoffOnstar
andtheradiowillturnbackon.
Chime Volume Adjustment Please refer to your owner’s manual to adjust the chime level. Audio Level Adjustment (Potentiometer located on 16-pin side of the interface) 1) Startyourvehicleandturnonthe
radiohavingaudioplaying.
2) Turnyouraftermarketradio’svolume
up¾oftheway.
Testing the GMOS-06
3) Withasmallscrewdriveradjustthepotentiometerclockwisetoraisetheaudio
levelandcounterclockwisetolowertheaudiolevel.
4) Onceatdesiredlevelyouraudioadjustmentiscomplete. OnStar Level Adjustment ToadjusttheOnStarvolumelevelfindtheBlack/Yellowwireonthe16-pin harness. PushtheblueOnStarbutton,whilethevoiceisspeakingtaptheBlack/Yellowwire toground. Thereare4volumesettingsforOnStar;oncethe4thsettingisreachedandthe Black/Yellowwireistappedtogrounditwillautomaticallygobacktothefirst volumesetting. OncethevolumeissetitwillstayatthatvolumeuntiltheBlack/Yellowwireis tappedtogroundagain.Thiscanbesetduringinstallationandthenleftalone.
Ifuseradjustmentisdesired,thecustomermayalsotapvolumeupordownonthe steeringwheel(ifequipped)toadjusttheOnStarlevel.
Potentiometer