Axxess GMOS-13 - Installing the GMOS-13; Testing the GMOS-13; OnStar Level Adjustment

GMOS-13
3
Connections to be made
From the 18-pin Axxess harness to 16-pin GM harness:
t $POOFDUUIFYellowXJSFUPUIFSBEJPTWPMUCBUUFSZPSNFNPSZXJSF
t $POOFDUUIFBlackXJSFUPUIFSBEJPTHSPVOEXJSF
t 1MVHUIFQJO"YYFTTIBSOFTTJOUPUIF(.04
t 5IFBlack/YellowXJSFJTGPSUIF0O4UBSWPMVNFBEKVTUNFOU5IJTXJMMCF
EJTDVTTFEJOUIF0O4UBS-FWFM"EKVTUNFOUTFDUJPOPGUIJTJOTUSVDUJPO
From the 16-pin GM harness:
t $POOFDUUIFBlueXJSFUPUIFBGUFSNBSLFUSBEJPTBOUFOOBUVSOPOXJSF
5IFQJOIBSOFTT"48$QMVHXJMMCFEJTDVTTFEMBUFSJOUIFNBOVBM
t 8JUIBMMDPOOFDUJPOTDPNQMFUFEUPUIFBGUFSNBSLFUSBEJPQMVHUIFQJO
IBSOFTTFTJOUPUIFWFIJDMFXJSJOHIBSOFTTFT
t 3FDPOOFDUUIFOFHBUJWFCBUUFSZUFSNJOBM
t $ZDMFUIFLFZCZUVSOJOHUIFJHOJUJPOPOGPSTFDPOET5IFOPGGBOEPOBHBJO
UPUFTUUIFSBEJP
Installing the GMOS-13
t 5VSOUIFJHOJUJPOiPOw5IFOUVSOUIFBGUFSNBSLFUSBEJPiPOw
t 1SFTTUIF0O4UBSCVUUPOUIFSBEJPTIPVMEUVSOiPGGwSBEJPXJMMNVUFJGNVUFXJSF
JTDPOOFDUFEBOEZPVTIPVMEIFBS0O4UBS
t 1VTIUIF0O4UBSDBODFMCVUUPOBOEUIFSBEJPTIPVMEDPNFCBDLiPOw
Testing the GMOS-13
t 5PBEKVTUUIF0O4UBSWPMVNFMFWFMGJOEUIF#MBDL:FMMPXXJSFPOUIF 
QJO"YYFTTIBSOFTT
t 1VTIUIFCMVF0O4UBSCVUUPOXIJMFUIFWPJDFJTTQFBLJOHUBQUIF#MBDL:FMMPX
XJSFUPHSPVOE
t 0ODFUIFWPMVNFJTTFUJUXJMMTUBZBUUIBUWPMVNFVOUJMUIF#MBDL:FMMPXXJSFJT
UBQQFEUPUIFHSPVOEBHBJO
 This can be set during installation and then left alone. If adjustment is
desired, the user may also tap “Volume Up” or “Down” on the steering wheel
(if equipped) to adjust the OnStar level.
OnStar Level Adjustment