Cadillac STS I facelift (2007-2011) (in rear compt, to rear of left rear shock tower) Wiring diagrams

"C" PILLAR) 1-17 (NOT USED) 1-32 (NOT USED) 18 19 20 21-56 SERIAL DATA WAKEUP IGN 1 BATT POSITIVE VOLT PNK WIRE 3.6L 33 34-46 HI SPD GMLAN SERIAL DATA (-) (NOT USED) 42 55 SERIAL DATA BUS (+) SERIAL DATA BUS (-) 47 48-50 CAN BUS LOW SERIAL DATA (NOT USED) ABS FUSE ABS MTR FUSE BLK WIRE BRAKE PRESSURE MODULATOR VALVE (BPMV) BRK VAC PUMP RELAY BRN WIRE BRN/WHT WIRE CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) ELECTRONIC SUSPENSION CONTROL (ESC) MODULE (BELOW RIGHT ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) GRN WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (+) HI SPD GMLAN SERIAL DATA (+) BATT POSITIVE VOLT HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED BRK VAC PUMP FUSE INSTRUMENT PANEL MODULE (IPM) LO SPD GMLAN SERIAL DATA LT BLU WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE PNK 9 10 WIRE RED/BLK WIRE RED/WHT WIRE RF WHEEL SPD SENS LOW REF RR WHEEL SPD SENS SIG LR WHEEL SPD SENS SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL IND TRACTION CONTROL SWITCH (TCS) TRACTION CTRL SW SIG 2 UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VACUUM PUMP RLY CTRL VARIABLE EFFORT STEERING ACTUATOR (IN LEFT REAR ENGINE COMPT, ON STEERING RACK) VEHICLE STABILITY CONTROL MODULE (LEFT REAR WHEEL HUB ASSEMBLY) WHT WIRE YEL WIRE

13 56 10 12 FUEL PUMP CTRL STARTER ENABLE 15 6 LOW SPD GMLAN DATA GROUND 2 19 PNK IGN 1 VOLT TRUNK AJAR SIG WIRE 21 22 LOW SPD GMLAN LOW SPD GMLAN 33 53 55 42 HIGH SPD GMLAN- HIGH SPD GMLAN+ 4 10 BATTERY POSITIVE VOLT GMLAN SERIAL DATA 4 5 15 16 HIGH SPD GMLAN- HIGH SPD GMLAN+ HIGH SPD GMLAN- HIGH SPD GMLAN+ 4 8 GROUND GROUND 5060 5060 COMPUTER DATA LINES SYSTEM 7 9 LOW SPD GMLAN DATA GROUND 9 14 HOOD OPEN SW SIG HOOD CLOSED SW SIG PPL BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DRIVER DOOR CONTROL MODULE (INSIDE DRIVER DOOR) DRIVER DOOR LATCH (IN MIDDLE REAR OF DRIVER DOOR) ENGINE CONTROLS SYSTEM GROUND HOOD AJAR SWITCH (ON RIGHT FRONT STRUT TOWER) HORN CTRL HORNS SYSTEM HOT AT ALL TIMES HOT IN RUN OR CRANK INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) J/C LEFT HEADLAMP ASSEMBLY LEFT REAR DOOR CONTROL MODULE (LRDM) (INSIDE LEFT REAR DOOR) LEFT REAR DOOR LATCH (IN MIDDLE REAR OF PASSENGER DOOR) LOGIC GMLAN SERIAL DATA LOW SPD GMLAN DATA LT GRN WIRE ORG/BLK WIRE PARK LAMP CTRL PASSENGER DOOR CONTROL MODULE (INSIDE PASSENGER'S DOOR) PASSENGER DOOR LATCH (IN MIDDLE REAR OF LEFT REAR DOOR) PNK WIRE PPL REAR COMPARTMENT LID LATCH (CENTER REAR OF REAR COMPT LID) REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) RED/BLK WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (UNDER REAR SPEAKER SHELF) RIGHT REAR DOOR CONTROL MODULE (RRDM) (INSIDE RIGHT REAR DOOR) RIGHT REAR DOOR LATCH (IN MIDDLE REAR OF RIGHT REAR DOOR) RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIM FUSE RIM/RPA/ ISRVM/CLM FUSE SECURITY IND STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TRUNK DIODE WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BCK/UP LAMP FUSE BCK/UP LAMP RELAY BLK WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DK GRN WIRE GRN WIRE GRY WIRE HOT AT ALL TIMES J/C LEFT BACKUP LAMP LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LO SPD GMLAN SER DATA LT GRN WIRE REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) RED WIRE REVERSE RLY CTRL RIGHT BACKUP LAMP TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM)

BLK WIRE COMPUTER DATA LINES SYSTEM CONSOLE COURTESY/ READING LAMPS COURTESY LAMP CTRL COURTESY RLY CTRL COURTESY SPLY CTRL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FRONT OVERHEAD CONSOLE COURTESY/ READING LAMPS GMLAN SERIAL DATA GRY WIRE HOT AT ALL TIMES I/P COMPART- MENT LAMP I/P COMPARTMENT LAMP SWITCH INT LAMP RELAY INT/ LAMP FUSE LEFT I/P RIGHT I/P COURTESY COURTESY LAMP LAMP LEFT REAR DOOR COURTESY LAMP LEFT SUN- SHADE NCA WIRE ORG/ WIRE PPL REAR COMPART- MENT COURTESY LAMP REAR COMPARTMENT LID RELEASE ACTUATOR REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) REAR OVERHEAD RIGHT REAR DOOR COURTESY LAMP RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) TRUNK DIODE RIGHT SUN- SHADE SPLICE PACK WHT WIRE

13 3 RR TURN SIGN SUPPLY VOL LR TURN SIGN SUPPLY VOL 3 1 4 2 INTERIOR BACK LIGHT LAMP SIGNAL SUPPLY VOLTAGE GROUND LIGHTS SYSTEM AUTO BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK LT GMLAN SERIAL DATA GROUND DISTRIBUTION SYSTEM HAZARD SWITCH HOT AT ALL TIMES I/P MDL/ ALDL FUSE V/ CHECK FUSE INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LAMP LEFT LEFT FRONT REPEATER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT LICENSE LAMP LEFT TURN SIGNAL IND LIC DIM FUSE LOGIC LT BLU WIRE LT BLU/WHT WIRE LT DK LT TRN/ LDW FUSE RIM FUSE MASTER LIGHTNING IND OFF PARK HEAD PARK LAMP RELAY PARK LAMP RLY CTRL POWER DISTRIBUTION SYSTEM REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT RIGHT FRONT REPEATER LAMP RIGHT FRONT TURN SIGNAL LAMP RIGHT LICENSE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIGHT TURN SIGNAL IND TO UNDERHOOD FUSE BLOCK LT PARK FUSE, (DIAGRAM 2 OF 2) TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) W/ GPS 1, HID W/ HID WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE BRN/WHT WIRE CENTER HIGH MOUNTED STOP LAMP (CHMSL) DK GRN WIRE DK GRN/WHT WIRE FROM UNDERHOOD FUSE BLOCK LIC DIM FUSE LT PARK FUSE (DIAGRAM 1 OF 2) GROUND GROUND B+ HOT AT ALL TIMES J/C LEFT FRONT MARKER LAMP LEFT FRONT PARK LAMP LEFT HEADLAMP LEFT LEFT REAR TAIL STOP/ LAMP TURN OUTAGE LAMP DETECTION SUPPLY SIGNAL VOLTAGE LEFT REAR MARKER LAMP LOGIC LEFT STOP PARK LAMP LAMP SUPPLY SUPPLY VOLTAGE VOLTAGE LEFT TAIL LAMP LOGIC LT BLU WIRE PPL PPL/ PPL/ PPL/ RIGHT FRONT MARKER LAMP RIGHT FRONT PARK LAMP RIGHT HEADLAMP RIGHT REAR MARKER LAMP RIGHT RIGHT PARK REAR LAMP STOP/ SUPPLY TURN VOLTAGE LAMP SUPPLY VOLTAGE RIGHT TAIL LAMP RIGHT TAIL LAMP OUTAGE DETECTION SIGNAL RT PARK FUSE STOP LAMP RELAY STOP LAMP SUPPLY VOLTAGE STOP LAMPS FUSE W/ GPS 1 W/ GPS 1, HID WHT WIRE YEL WIRE YEL/BLK WIRE

15-SPEAKER SYSTEM AUDIO AMPLIFIER AUTOMATIC LEVEL CONTROL (ALC) COMPRESSOR BLK WIRE BLK/WHT WIRE CENTER HIGH LEFT RIGHT MOUNTED BACKUP BACKUP STOP LAMP LAMP LAMP (CHMSL) DIFFERENTIAL COOLER PUMP FUEL PUMP, RIGHT SENDER TAIL LAMP ASSEMBLY LEFT REAR MARKER LAMP LEFT RIGHT LICENSE LICENSE LAMP LAMP LEFT SIDE OBJECT SENSOR NCA WIRE RADIO REAR COMPARTMENT LID LATCH REAR INSIDE OBJECT REARVIEW SENSOR MIRROR CONTROL (ISRVM) MODULE REAR SUBWOOFER SPEAKER RELAY REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RIGHT REAR MARKER LAMP RIGHT SIDE OBJECT SENSOR RIGHT SUNSHADE RUN WIRE RUN/CRNK RELAY VEHICLE DIRECTION ALERT ALARM WARNING MODULE W/ AXLE COOLING SYSTEM W/ LANE DEPARTURE WARNING SENSOR INDICATOR W/ SIDE OBSTACLE DETECTION SENSOR INDICATOR W/ SOFT RIDE, SPORT SUSPENSION SYSTEM, MAGNETIC RIDE CONTROL W/ TRAILER PROVISIONS WHT WIRE

15 9 GMLAN SERIAL DATA BACKLIGHT LAMP CTRL AUTOMATIC TRANSMISSION SHIFT LEVER ASSEMBLY AUXILIARY HVAC CONTROL MODULE (W/ HEATED SEAT) BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE HAZARD SWITCH IGNITION MODE SWITCH INFLATABLE RESTRAINT STEERING LEFT REAR DOOR CONTROL MODULE (INSIDE LEFT REAR DOOR) LEFT REAR WINDOW SWITCH LEFT STEERING WHEEL CONTROL SWITCH NCA WIRE RIGHT REAR DOOR CONTROL MODULE (INSIDE RIGHT REAR DOOR) RIGHT REAR WINDOW SWITCH RIGHT STEERING WHEEL CONTROL SWITCH SPLICE PACK STEERING COLUMN FUSE BLOCK FUSE SUNROOF SWITCH (IF EQUIPPED) TRACTION CONTROL SWITCH WHEEL MODULE COIL (TOP OF STEERING COLUMN, BEHIND STEERING WHEEL) WHT WIRE YEL WIRE

1 3 2 SENSOR SIGNAL SUPPLY VOLTAGE LOW REFERENCE 2 3 1 LOW REFERENCE SUPPLY VOLTAGE SENSOR SIGNAL 2 3 4 5 6 BATT POSITIVE VOLT SERIAL DATA SERIAL DATA GND GND 24 2525 BACKUP LAMP FEED REAR PARKING DIAGNOSTIC SIG 4 2 5 SERIAL DATA BATT POSITIVE VOLT GND 850 1339 GROUND IGN 1 VOLTAGE PNK WIRE BCK/UP LAMP FUSE BCK/UP LAMP RELAY BLK WIRE BRN WIRE CENTER AMBER IND CENTER AMBER IND CTRL LEFT AMBER IND CTRL COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER DOOR CONTROL MODULE (INSIDE DRIVER'S DOOR) DRIVER OUTSIDE REARVIEW MIRROR FASCIA) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED IND J/C LED SIG LEFT AMBER IND LEFT REAR CORNER OBJECT ALARM SENSOR (ON LEFT REAR CORNER OF REAR LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LEFT REAR MIDDLE OBJECT ALARM SENSOR (ON LEFT REAR MIDDLE OF REAR FASCIA) LEFT SIDE OBJECT SENSOR (ON LEFT REAR OF VEHICLE) LT BLU WIRE LT GRN WIRE MIDDLE OBJECT SENSOR CONNECTOR) NAVIGATION CIRCUIT ORG/ WIRE PASSENGER DOOR CONTROL MODULE (INSIDE PASSENGER'S DOOR) PASSENGER OUTSIDE REARVIEW MIRROR PNK WIRE PPL REAR INTEGRATION MODULE (RIM) (IN LEFT SIDE OF REAR COMPT, UNDER REAR SHELF) REAR OBJECT SENSOR CONTROL MODULE REAR PARKING ASSIST (RPA) DISPLAY REAR PARKING ASSIST CHIME SIG RED IND CTRL WIRE RED WIRE RED/WHT WIRE REVERSE RELAY COIL FEED RIGHT REAR CORNER OBJECT ALARM SENSOR (ON RIGHT REAR CORNER OF REAR FASCIA) RIGHT REAR FUSE BLOCK RIGHT REAR MIDDLE OBJECT ALARM SENSOR (ON RIGHT REAR MIDDLE OF REAR FASCIA) RIGHT SIDE OBJECT SENSOR (ON LEFT REAR OF VEHICLE) RIM/RPA/ ISRVM/CLM FUSE RT TRN/ SBZA FUSE SERIAL DATA VEHICLE SPEED SIG WHT WIRE YEL WIRE

AUTOMATIC TELEVISION LEVEL ANTENNA CONTROL MODULE (ALC) COMPRESSOR AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BRN WIRE DIGITAL RADIO RECEIVER (IF EQUIPPED) DRIVER PASSENGER LEFT WINDOW WINDOW REAR MOTOR MOTOR WINDOW MOTOR DRIVER SEAT BELT RETRACTOR ELC CMPRSR RELAY ELC EXH FUSE ELECTRONIC SUSPENSION CONTROL (ESC) MODULE FROM DDM FUSE (DIAGRAM 1 OF 6) INCLR PUMP FUSE FROM LPDB 1 FUSE (DIAGRAM RPDB 2 1 OF 6) FUSE FROM POS LAMP ELC FUSE CMPRSR (DIAGRAM FUSE 1 OF 6) GRY WIRE IGN 3 FUSE INCLR PUMP RELAY J/C MRTD MDL FUSE ORG/ WIRE PASSENGER BACK VENTILATED SEAT BLOWER MOTOR (W/ CLIMATE CONTROL SEATS) PASSENGER SEAT BELT RETRACTOR REAR HEATED SEAT CONTROL MODULE REAR HTD/ SEATS FUSE RED WIRE RELAY RF HTD/ SEAT/XM FUSE RUN WIRE SEAT CLIMATE CONTROL MODULE TAN WIRE TO CNSTR VENT FUSE (DIAGRAM 3 OF 6) TO RPDB 1 FUSE (DIAGRAM 3 OF 6) TRAFFIC INFORMATION RECEIVER TV/VICS/ AFS/SCM FUSE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VEHICLE RIGHT STABILITY REAR CONTROL WINDOW MODULE MOTOR W/ ACTIVE BRAKE CONTROL W/ CLIMATE CONTROL SEATS, FRONT HEATER SEAT W/ INFOTAINMENT SYSTEM W/ INFOTAINMENT W/ VARIABLE REAL TIME DAMPING MAGNETO RHEOLOGICAL SYSTEM 014/015 W/ VARIABLE REAL TIME DAMPING MAGNETO RHEOLOGICAL WHT WIRE WNDW MTRS CIRCUIT BREAKER