Owner's Manual

METRA. The World’s best kits.™ metraonline.com1-800-221-0932
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Installation Instructions for LC-GMRC-03
REV. 7/15/2014 INSTLC-GMRC-03
LC-GMRC-03
Cadillac Class II data bus interface
1996-2005
t 1SPWJEFTBDDFTTPSZWPMUBNQ
t 3FUBJOT3"13FUBJOFE"DDFTTPSZ1PXFS
t 6TFEJOOPOBNQMJGJFETZTUFNTPSXIFOCZQBTTJOHBOBNQMJGJFETZTUFN
t 3FUBJOTBMMXBSOJOHDIJNFTUISPVHIPOCPBSETQFBLFS
t -PXQSPGJMFDBTF
t 64#VQEBUBCMF
Note: If OnStar is present it will be lost.
FEATURES
t-$(.3$JOUFSGBDFtQJO$BEJMMBDIBSOFTT
INTERFACE COMPONENTS
t$VUUJOHUPPMt$SJNQJOHUPPMt5BQF
t$POOFDUPSTFYBNQMFCVUUDPOOFDUPSTCFMMDBQTFUD
TOOLS REQUIRED
CADILLAC
$BUFSB 
%FWJMMF 
%FWJMMF 
&MEPSBEP 
4FWJMMF 
4FWJMMF 
*Note: You must bypass the factory amp in
these vehicles to use this interface.
APPLICATIONS
CONNECTIONS TO BE MADE
From the 4-pin harness to the aftermarket radio:
t $POOFDUUIFYellowXJSFUPUIFDPOTUBOUNFNPSZXJSF
t $POOFDUUIFRedXJSFUPUIFBDDFTTPSZXJSF
t $POOFDUUIFBlackXJSFUPUIFHSPVOEXJSF
t 1MVHUIFQJOIBSOFTTJOUPUIF-$(.3$JOUFSGBDF
From the 32-pin harness to the aftermarket radio:
t $POOFDUUIFBlueXJSFUPUIFBOUFOOBUVSOPOXJSF
t $POOFDUUIFOrange/WhiteXJSFUPUIFJMMVNJOBUJPOXJSFJGUIFBGUFSNBSLFU
SBEJPIBTOPJMMVNJOBUJPOXJSFUBQFPGGUIFOrange/WhiteXJSF
t $POOFDUUIFWhiteXJSFUPUIFMFGUGSPOUQPTJUJWFTQFBLFSPVUQVU
t $POOFDUUIFWhite/BlackXJSFUPUIFMFGUGSPOUOFHBUJWFTQFBLFSPVUQVU
t $POOFDUUIFGray XJSFUPUIFSJHIUGSPOUQPTJUJWFTQFBLFSPVUQVU
t $POOFDUUIFGray/BlackXJSFUPUIFSJHIUGSPOUOFHBUJWFTQFBLFSPVUQVU
t $POOFDUUIFGreenXJSFUPUIFMFGUSFBSQPTJUJWFTQFBLFSPVUQVU
t $POOFDUUIFGreen/BlackXJSFUPUIFMFGUSFBSOFHBUJWFTQFBLFSPVUQVU
t $POOFDUUIFPurpleXJSFUPUIFSJHIUSFBSQPTJUJWFTQFBLFSPVUQVU
t $POOFDUUIFPurple/BlackXJSFUPUIFSJHIUSFBSOFHBUJWFTQFBLFSPVUQVU
t 1MVHUIFQJOIBSOFTTJOUPUIFWFIJDMFTXJSJOHIBSOFTT
INSTALLING THE LC-GMRC-03
t *OJUJBMJ[FUIFJOUFSGBDFCZUVSOJOHUIFJHOJUJPOPOGPSTFDPOETUIFOUVSO
UIFJHOJUJPOCBDLPGGBOEPOBHBJO