Cadillac XLR I (2003-2009) (in instrument panel harness, at base of left a pillar behind trim panel, Wiring diagrams

10 11 14 13 GMLAN DATA BUS + GMLAN DATA BUS - GMLAN DATA BUS + GMLAN DATA BUS - 2 5 3 4 GMLAN DATA BUS - GMLAN DATA BUS + GMLAN DATA BUS - GMLAN DATA BUS + 3 2 GMLAN DATA BUS - GMLAN DATA BUS + 33 53 GMLAN DATA BUS - GMLAN DATA BUS + 4.4L, 4.6L 40 22 21 39 GMLAN DATA BUS - GMLAN DATA BUS + GMLAN DATA BUS + GMLAN DATA BUS - 8 9 24 23 GMLAN DATA BUS - GMLAN DATA BUS + GMLAN DATA BUS + GMLAN DATA BUS - 8 9 GMLAN DATA BUS + GMLAN DATA BUS - ADAPTIVE CRUISE MODULE (ACM) (CENTER OF VEHICLE) AUDIO AMPLIFIER (BEHIND LEFT REAR SEAT BACK) AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CD CHANGER CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DIGITAL RADIO RECEIVER DRIVER MEMORY SEAT MODULE (UNDER DRIVER'S SEAT) DK BLU WIRE DOOR DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT FRONT OF ENGINE COMPT) ELECTRONIC SUSPENSION CONTROL (ESC) MODULE (LEFT REAR OF LUGGAGE COMPT) ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) EXHAUST FLOW CONTROL MODULE (LEFT REAR OF VEHICLE) FOLDING TOP MODULE (LEFT SIDE OF FOLDING TOP STORAGE COMPT) FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT GMLAN DATA BUS- GMLAN DATA BUS- GMLAN DATA BUS- GMLAN DATA BUS- GRY WIRE HEAD UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) INSTRUMENT PANEL CLUSTER (IPC) HEADLAMP MODULE (RIGHT REAR CORNER OF ENGINE COMPT) HIGH SPEED GMLAN SERIAL DATA BUS + HIGH SPEED GMLAN SERIAL DATA BUS + HIGH SPEED GMLAN SERIAL DATA BUS - HOT AT ALL TIMES HVAC CONTROL MODULE (AT CENTER OF DASH) LOGIC LOGIC HIGH SPEED GMLAN SERIAL DATA BUS - LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK WIRE PPL RADIO REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (BEHIND RIGHT SIDE OF DASH) REAR FOG/ALDL FUSE 30 RED/WHT WIRE SPLICE PACK TAN WIRE TAN/BLK WIRE W/ ONSTAR W/O ONSTAR WHT WIRE YEL WIRE

55 56 38 CLASS 2 SER DATA RF TRN SIG VLT LF TRN SIG VLT 65 47 62 PRK LMP RLY CNTL LMP OUT DET SIG LMP OUT DET SIG PPL 9 5 67 66 HAZARD SW SIG PRK LMP SW ON SIG RT TRN SIG SW LT TRN SIG SW AIR CONDITIONING SYSTEM AMBIENT LIGHT SEN SIG AUTOMATIC TRANSMISSION BLK WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (BEHIND LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (AT CENTER LOGIC HVAC CLASS SER DATA LEFT FRONT MARKER LAMP LEFT FRONT PARK LAMP LEFT FRONT TURN SIGNAL LAMP LOGIC LOW REF LOW REF BRK POS SENS SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE OF DASH) OFF AUTO PARK HEAD PARK LAMP RELAY 37 PARK LAMPS FUSE 8 PPL 7 8 RED WIRE RED/WHT WIRE RIGHT FRONT MARKER LAMP RIGHT FRONT PARK LAMP RIGHT FRONT TURN SIGNAL LAMP RR LMP SUPPLY VLT LR LMP SUPPLY VLT STOP/ B/U/LPS FUSE 5 STP LMP SW SIG SUNLOAD SENSOR ASSEMBLY TAN WIRE TEHC MODULE ASSEMBLY TURN SIGNAL/ MULTIFUNCTION SWITCH UNDER- HOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE YEL WIRE

16 3 4 FOG LMP SW SIG LOW BEAM IN HI BEAM SIG 29 19 HI BM RLY CTRL FOG LMP RLY CTRL 51 17 15 5 FTP SW SIG HDLMPS OFF HDLMPS ON PRK LMP ON SIG AIR CONDITIONING SYSTEM BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 (BCM) CLASS 2 (BCM) CLASS 2 (BCM) CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ENGINE COMPT, ON UPPER FOG LP FUSE 22 FOG RELAY 38 FRONT FOG LAMP SWITCH FTP GRY WIRE HEAD HEAD- LAMPS ON IND HIGH BEAM IND FOG LAMPS ON HIGH BEAM RELAY 39 HIGH PPL HOT AT ALL TIMES HVAC CONTROL MODULE (AT CENTER OF DASH) INSTRUMENT PANEL CLUSTER LEFT HEAD- LAMP BALLAST LEFT HEAD- LAMP HIGH BEAM SOLENOID LOW (NOT USED) FTP LOW BEAM RELAY 47 LOW REF LT BLU WIRE LT GRN WIRE LT HI BM FUSE 24 LT LO BM FUSE 21 NCA WIRE OFF AUTO ON UPPER RIGHT FRAME RAIL) GROUNDED ORG/ WIRE PARK PNK PNK WIRE PNK/WHT WIRE PPL PPL PPL RIGHT FRONT FOG LAMP LEFT FRONT FOG LAMP RIGHT HEAD- LAMP BALLAST RIGHT HEAD- LAMP HIGH BEAM SOLENOID RT HI BM FUSE 23 RT LO BM FUSE 19 SEN SIG SER DATA SUNLOAD SENSOR ASSEMBLY (UPPER CENTER OF DASH) TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE YEL WIRE

ABS IND. AIR BAG IND B+ IPC BATTERY BLK WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH (IN BRAKE FLUID RESERVOIR) BRAKE IND BRN WIRE BRN/WHT WIRE CLASS 2 (BCM) CLASS 2 (ECM) CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM COOLANT TEMP DIC UP SW DIC SW ILLUM DIC SW DOME LAMP DIC RESET DIC OPTIONS DIC GROUND DIM DOWN SWITCH DIM UP SWITCH DIMMER SWITCH DIMMER/HEAD UP DISPLAY (HUD) SWITCH DK GRN/WHT WIRE DN UP DOME SWITCH DRIVER INFORMATION CENTER (DIC) SWITCH DRIVER INFORMATION CENTER: MESSAGE CENTER, INFORMATION DISPLAY, WARNING MESSAGES ENGINE SPEED VEHICLE SPEED PARK LAMP WASHER FLUID HAZARD FOG LAMP IND FUEL LEVEL GMLAN (EBCM) GMLAN (ECM) GMLAN CLASS 2 (BCM) GRN WIRE GROUND GROUND DIMMER UP DIMMER DOWN DIMMER SELECT GRY WIRE HEADLAMPS ON IND HIGH BEAM IND IGN ILLUM ILLUMINATION (3 BULBS) IMAGE SWITCH INFORMATION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC KM/H IND LEFT TURN IND LOGIC LOW TIRE PRESSURE IND LT BLU WIRE MALFUNCTION IND MESSAGE REQUEST MPH IND OIL PRESSURE OPTIONS SWITCH ORG/ WIRE PANEL LAMP SUPPLY PANEL LAMPS PANEL LAMPS PARK BRAKE BRAKE FLUID PARK BRAKE PEDAL ASSEMBLY PNK 5 6 WIRE PNK WIRE PPL RED/WHT WIRE RESET SWITCH RIGHT TURN IND SEAT BELT IND SECURITY IND SERIAL DATA SPEEDOMETER TACHOMETER TAN/WHT WIRE TRACTION OFF IND TURN SIGNAL AUDIBLE IND UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) UPSHIFT IND VSS WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

25 39 12 ENG SPEED VSS MIL CTRL 4.6L 44 9 45 FUEL LVL 1 LOW REF FUEL LVL 2 45 65 LOW REF ENG OIL SENS 53 33 SERIAL DATA + SERIAL DATA - 60 24 40 OIL PRES SIG LOW REF BATTERY POSITIVE VOLTAGE BELT SWITCH BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) CLSTR/ HUD FUSE 26 BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH ECT SIG ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE (ECT) SENSOR (REAR SIDE OF RIGHT CYLINDER HEAD) ENGINE OIL LEVEL, TEMPERATURE SENSOR ENGINE OIL PRESSURE (EOP) SENSOR (LOWER LEFT SIDE OF ENGINE) FUEL LEVEL SENSOR (LEFT) FUEL LEVEL SENSOR (RIGHT) (TOP OF RIGHT FUEL TANK) FUEL PUMP, SENDER ASSEMBLY (IN LEFT FUEL TANK) GROUND GRY WIRE HEAD UP DISPLAY (HUD) (TOP LEFT SIDE OF DASH) HOT AT ALL TIMES HUD MESSAGE CENTER IMAGE DOWN SIGNAL IMAGE UP IMAGE DOWN IMAGE UP SIGNAL INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER CENTER CONSOLE) LOGIC LOW REF LT BLU WIRE MESSAGE REQUEST NCA WIRE OIL LVL SW PNK 5 6 WIRE PNK LOW REF WIRE PNK WIRE RADIO REAR OBJECT SENSOR CONTROL MODULE (BEHIND REAR COMPT STOWAGE TRIM PANEL) RED/WHT WIRE SERIAL DATA SPLICE PACK TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDER SEAT BASE) UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) VEHICLE SPEED SIGNAL VSS WHT WIRE YEL WIRE

BATTERY (B+) GROUND BATTERY B+ MEMORY 1 SW SIG MEMORY 2 SW SIG CLASS 2 SERIAL DATA BLK WIRE BODY CONTROL MODULE (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE DK GRN WIRE DOWN SW SIG DR CONTROLS CIRCUIT BREAKER 34 DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY DRIVER MEMORY SEAT MODULE (UNDER DRIVER'S SEAT) DRIVER OUTSIDE REARVIEW MIRROR (OUTSIDE OF DRIVER'S DOOR) EXIT SWITCH FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) GROUND GRY WIRE GRY/BLK WIRE HORIZONTAL MOTOR HORIZONTAL POSITION SENSOR VERTICAL MOTOR HORIZONTAL POSITION SENSOR VERTICAL POSITION SENSOR HOT AT ALL TIMES I/P FUSE BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) L MIRR SIG LEFT SW SIG LO LT LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MEMORY 2 SWITCH MEMORY SEAT SWITCH MEMORY 1 SWITCH NCA WIRE ORG/WHT WIRE PASSENGER OUTSIDE REARVIEW MIRROR (OUTSIDE OF PASSENGER'S DOOR) PPL PWR SEAT CIRCUIT BREAKER 33 R MIRR SIG RED WIRE RED/WHT WIRE RIGHT SW SIG SERIAL DATA SPLICE TAN WIRE TILT/TELE SW/ MEM SEAT MOD FUSE 26 UP SW SIG VERTICAL MOTOR VERTICAL POSIT SENSOR LOW REFERENCE HORIZ POSIT SENSOR GROUND VERTICAL POSITION SENSOR HORIZONTAL MOTOR WHT WIRE YEL WIRE

ACCA/DRIV DR SW FUSE 21 BATTERY POSITIVE VOLT BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DDM CLASS 2 SER DATA DOWN DR CNTRLS CIRCUIT BREAKER 34 DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER DOOR SWITCH ASSEMBLY (DDSA) DRIVER WINDOW MOTOR (IN CENTER OF DRIVER'S DOOR) DRIVER WINDOW SWITCH DRIVER WNDO DOWN SIGNAL DRIVER WNDO EXPRESS SIG DRIVER WNDO UP SIGNAL EXPRESS UP/DOWN FRONT PASSENGER DOOR MODULE (FPDM) (IN FRONT DOOR) FRONT PASSENGER WINDOW MOTOR (CENTER OF PASSENGER'S DOOR) FRONT PASSENGER WINDOW SWITCH GROUND GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) LOGIC PASS WNDO DOWN SIGNAL PASS WNDO EXPRESS SIG PASS WNDO UP SIGNAL PASSENGER WINDOW SWITCH PDM CLASS 2 SER DATA POWER WINDOW MOTOR FR PASSENGER DOWN SIG POWER WINDOW MOTOR FRONT PASSENGER UP SIG POWER WINDOW MOTOR LEFT FRONT UP CONTROL POWER WINDOW MOTOR LT FRONT DOWN CONTROL POWER WINDOW MOTOR RIGHT FRONT UP CONTROL POWER WINDOW MOTOR RT FRONT DOWN CONTROL PPL PPL POWER WINDOW SWITCH RIGHT FRONT EXPRESS SIG RED WIRE RED/WHT WIRE SERIAL DATA SPLICE PACK TAN WIRE WHT WIRE

5936 743 5513 138 PPL OPEN SW SIG ACC VOLT CLASS 2 SER DATA REL/CLOSE SW SIG AUXILIARY POWER RELAY (BEHIND RIGHT SIDE OF DASH) BATT 1 FUSE 33 BATT 3 FUSE 26 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRK B FUSE 32 BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DECK LID CLOSE/PARK/ DK GRN WIRE DOOR CONTROLS CIRCUIT BREAKER 34 EXTERIOR REAR COMPARTMENT LID RELEASE SWITCH (LOWER LEFT OF REAR BUMPER) FLDG TOP/ TRUNK LATCH FUSE 44 FOLDING TOP MODULE (LEFT SIDE OF FOLDING TOP STORAGE COMPT) FUEL DOOR RELAY 52 FUEL DOOR RELEASE ACTUATOR FUEL DOOR RELEASE SWITCH GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES I/P RELAY BLOCK (FRONT OF RIGHT FRONT FOOTWELL, BEHIND CARPET) INSTRUMENT PANEL CLUSTER INTERIOR REAR COMPARTMENT LID RELEASE SWITCH LOGIC LOGIC CLASS 2 SER DATA LT BLU WIRE LT GRN WIRE MESSAGE CENTER MSG REQ ORG/ WIRE ORG/BLK WIRE PNK RFA CLASS 2 SER DATA TRUNK REL SW SIG WIRE PNK WIRE POWER DISTRIBUTION SYSTEM POWER TOPS SYSTEM PPL REAR COMPARTMENT LID OPEN SWITCH REAR COMPARTMENT LID PULL- DOWN ACTUATOR REAR COMPARTMENT LID RELEASE/ CLOSE SWITCH (RIGHT SIDE OF REAR COMPT LID) RED WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (RIGHT SIDE OF DASH) TAN WIRE TRANSMISSIONS SYSTEM TRUNK AJAR IND UNDERHOOD FUSE BLOCK (RIGHT REAR OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

22 3 11 SDM CLASS 2 SERIAL DATA LEFT SEAT BELT SW LOW REF 5 66 67 PK LMP SW ON SIG LF TURN SIG SW RF TURN SIG SW 55 44 BCM CLASS 2 SERIAL DATA LF DR OPEN SW SIG AUDIBLE ALARM BCM HIGH SPD GMLAN SERIAL DATA BUS - BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT SIDE OF DASH) BRN/WHT WIRE CLASS 2 (RCDLR) B+ CLASS 2 (SDM) COMPUTER DATA LINES SYSTEM CONSOLE) DK BLU WIRE DK BLU/WHT WIRE DRIVER DOOR LATCH AJAR CLOSED OPEN DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH ECM HIGH SPD GMLAN SERIAL DATA BUS - ENGINE CONTROL MODULE (ECM) (LOWER RIGHT REAR OF ENGINE COMPT) GRY WIRE HEAD INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER CENTER INSTRUMENT PANEL CLUSTER (IPC) INTERNAL ANTENNA IPC CLASS 2 SERIAL DATA LEFT FRONT TIRE PRESSURE MONITOR SENSOR LEFT REAR TIRE PRESSURE MONITOR SENSOR LF TURN SIG SW LOGIC IPC LOW TIRE PRESSURE IND LT BLU/WHT WIRE LT GRN WIRE MESSAGE CENTER MESSAGE REQUEST NCA WIRE OFF AUTO PARK PNK RFA CLASS 2 SERIAL DATA WIRE PNK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (BEHIND RIGHT SIDE OF DASH) RF TURN SIG SW RIGHT FRONT TIRE PRESSURE MONITOR SENSOR RIGHT REAR TIRE PRESSURE MONITOR SENSOR SEAT BELT IND SOLID STATE SUPPLEMENTAL RESTRAINTS SYSTEM PNK PNK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH WHT WIRE