Cadillac STS I facelift (2007-2011) (in passenger compt, behind left kick panel) Wiring diagrams

26 9 36 42 55 SENSOR SIG LOW REF SENSOR SIG SERIAL DATA + SERIAL DATA - 43 61 40 LOW REF OIL SW SIG AUTO ON BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COURTESY LMP SW ON SIG DISPLAY DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DRIVER DOOR CONTROL MODULE (INSIDE DRIVER'S DOOR) DRIVER DOOR LATCH (IN MIDDLE REAR OF DRIVER DOOR) ENG/ MET TRIP RESET ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) ENGINE CONTROLS SYSTEM GMLAN SERIAL DATA NIGHT VISION IMAGE UP SIG HUD SWITCH LOW REF GRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE I/P DIMMER SW SIG I/P DIMMER SWITCH IMAGE DN BATTERY POSITIVE VOLT IMAGE DN IMAGE UP IMAGE UP INFO RESET INFO UP INFO DN INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LEFT REAR DOOR CONTROL MODULE (INSIDE LEFT REAR DOOR) LEFT REAR DOOR LATCH (IN MIDDLE REAR OF PASSENGER DOOR) LO SPD GMLAN SERIAL DATA LOGIC LOGIC HEAD UP DISPLAY (HUD) LOW REF LOW SPD GMLAN DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NIGHT VISION IMAGE DOWN NIGHT VISION IMAGE DIMMING GROUND PARK BRAKE SWITCH (AT BASE OF BRAKE PEDAL) PK BRK SW SIG PNK WIRE PNK/ DK WIRE PNK/BLK WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TRIP A/B W/ HEAD UP DISPLAY WHT WIRE YEL WIRE

45 65 LOW REF TEMP SENSOR 45 9 44 SENSOR SIG LOW REF SENSOR SIG 5060 2384 5699 PNK WIRE 53 33 SERIAL DATA + SERIAL DATA - 60 24 40 OIL SW SIG LOW REF AUTO ON IMAGE UP BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COURTESY LMP SW ON SIG DISPLAY DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DRIVER DOOR CONTROL MODULE (INSIDE DRIVER'S DOOR) DRIVER DOOR LATCH (IN MIDDLE REAR OF DRIVER DOOR) ENGINE CONTROLS SYSTEM ENGINE OIL PRESSURE (EOP) SENSOR (ON LEFT SIDE OF ENGINE) GMLAN SERIAL DATA NIGHT VISION IMAGE UP SIG HUD SWITCH LOW REF GRN WIRE GROUND GROUND DISTRIBUTION SYSTEM (IN PASSENGER COMPT, BEHIND LEFT KICK PANEL) GRY WIRE I/P DIMMER SW SIG I/P DIMMER SWITCH IMAGE DN IMAGE DN BATTERY POSITIVE VOLT IMAGE UP INFO RESET INFO DN INFO UP INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LEFT REAR DOOR CONTROL MODULE (INSIDE LEFT REAR DOOR) LEFT REAR DOOR LATCH (IN MIDDLE REAR OF PASSENGER DOOR) LO SPD GMLAN SERIAL DATA LOGIC LOGIC HEAD UP DISPLAY (HUD) LOW REF LOW SPD GMLAN DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NIGHT VISION IMAGE DOWN NIGHT VISION IMAGE DIMMING GROUND OIL SW SIG PARK BRAKE SWITCH (AT BASE OF BRAKE PEDAL) PK BRK SW SIG PNK/ DK PNK WIRE PNK/BLK WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP A/B TRIP RESET ENG/ MET W/ HEAD UP DISPLAY WHT WIRE YEL WIRE

45 65 LOW REF TEMP SENSOR 45 9 44 SENSOR SIG LOW REF SENSOR SIG 5060 2384 5699 PNK WIRE 53 33 SERIAL DATA + SERIAL DATA - 60 24 40 OIL SW SIG LOW REF AUTO ON IMAGE UP BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COURTESY LMP SW ON SIG DISPLAY DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR OPEN SW SIG DRIVER DOOR CONTROL MODULE (INSIDE DRIVER'S DOOR) DRIVER DOOR LATCH (IN MIDDLE REAR OF DRIVER DOOR) ENGINE CONTROLS SYSTEM ENGINE OIL PRESSURE (EOP) SENSOR (ON LEFT SIDE OF ENGINE) GMLAN SERIAL DATA NIGHT VISION IMAGE UP SIG HUD SWITCH LOW REF GRN WIRE GROUND GROUND DISTRIBUTION SYSTEM (IN PASSENGER COMPT, BEHIND LEFT KICK PANEL) GRY WIRE I/P DIMMER SW SIG I/P DIMMER SWITCH IMAGE DN IMAGE DN BATTERY POSITIVE VOLT IMAGE UP INFO RESET INFO DN INFO UP INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LEFT REAR DOOR CONTROL MODULE (INSIDE LEFT REAR DOOR) LEFT REAR DOOR LATCH (IN MIDDLE REAR OF PASSENGER DOOR) LO SPD GMLAN SERIAL DATA LOGIC LOGIC HEAD UP DISPLAY (HUD) LOW REF LOW SPD GMLAN DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NIGHT VISION IMAGE DOWN NIGHT VISION IMAGE DIMMING GROUND OIL SW SIG PARK BRAKE SWITCH (AT BASE OF BRAKE PEDAL) PK BRK SW SIG PNK/ DK PNK WIRE PNK/BLK WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP A/B TRIP RESET ENG/ MET W/ HEAD UP DISPLAY WHT WIRE YEL WIRE

2500 2500 9342 COMPUTER DATA LINES SYSTEM 2501 2501 1150 1787 830 873 COMPUTER DATA LINES SYSTEM 3.6L 42 55 2500 2501 SERIAL DATA BUS (+) SERIAL DATA BUS (-) 5727 342 345 883 885 872 1056 1337 COMPUTER DATA LINES SYSTEM ABS FUSE ABS IND. ABS MTR FUSE BLK WIRE BRAKE FLUID LEVEL SWITCH (IN MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE PRESSURE MODULATOR VALVE (BPMV) BRK VAC PUMP RELAY BRN WIRE CAN BUS HI SERIAL DATA CAN BUS LO SERIAL DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED BRK VAC PUMP FUSE IGN INSTRUMENT PANEL CLUSTER (IPC) LF WHEEL SPD SENS LOW REF LOGIC LT BLU WIRE LT GRN/BLK WIRE MOTOR CONTROL NCA WIRE ORG/ WIRE PPL RED/BLK WIRE SERIAL DATA SERIAL DATA (+) (1) SERIAL DATA (+) (1) BATTERY POSITIVE VOLT TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VACUUM PUMP RLY CTRL VARIABLE EFFORT STEERING ACTUATOR (ON LEFT SIDE OF POWER STEERING GEAR) WHEEL SPD SENS LOW REF RF WHEEL SPD SENS SIGNAL RR WHEEL SPD SENS SIGNAL LR WHT WIRE YEL WIRE

ABS IND. BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (IN MASTER CYLINDER RESERVOIR) BRAKE IND BRN WIRE CAN BUS CAN BUS HIGH LOW CAN BUS IGN CAN BUS HIGH LOW COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY GRN WIRE HOT AT ALL TIMES HOT W/ RUN RELAY ENERGIZED IGN INSTRUMENT PANEL CLUSTER (IPC) J/C LEFT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND LEFT FRONT BRAKE ROTOR) LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LEFT REAR WHEEL SPEED SENSOR (WSS) (BEHIND LEFT REAR BRAKE ROTOR) LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK 4 3 2 1 IGN 1 VOLT CAN BUS HIGH CAN BUS LOW GND WIRE PNK 9 10 WIRE PNK LT WIRE PNK PNK WIRE PNK WIRE POWER STEERING CONTROL MODULE (PSCM) (LEFT SIDE OF DASH, ABOVE PARK BRAKE PEDAL) PPL RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT FRONT BRAKE ROTOR) RIGHT REAR WHEEL SPEED SENSOR (WSS) (BEHIND RIGHT REAR BRAKE ROTOR) RIM/RPA/ISRVM/CLM FUSE SERIAL DATA TAN WIRE TAN/WHT WIRE TRACTION OFF IND TV/VICS/ AFS/SCM FUSE WHT WIRE YAW, LATERAL ACCELEROMETER SENSOR 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

4.4L, 4.6L 3.6L BANK 1 SENSOR 1 CONNECTOR) BLK WIRE BLK/WHT WIRE CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA DK GRN WIRE ECM/ TCM SERIAL DATA WAKE UP ECM/TCM SERIAL DATA WAKE UP HEADLAMP LEVELING MODULE (LEFT SIDE OF HEADLAMP ASSEMBLY) HIGH SPEED GMLAN DATA WAKE UP HIGH SPEED GMLAN DATA WAKE UP CAN BUS HIGH SERIAL DATA HIGH SPEED GMLAN SERIAL DATA (+) HIGH SPEED GMLAN SERIAL DATA BUS + HIGH SPEED GMLAN SERIAL DATA WAKE UP LOW SPEED GMLAN SERIAL DATA LT GRN/BLK WIRE POWER STEERING CONTROL MODULE (LEFT SIDE OF DASH, ABOVE PARK BRAKE PEDAL) RED/WHT WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE W/ ACTIVE BRAKE CONTROL W/ AUTO ADAPTIVE CRUISE CONTROL W/ MAGNETIC RIDE CONTROL W/O ACTIVE BRAKE CONTROL W/O AUTO ADAPTIVE CRUISE CONTROL W/O AUTO W/ AUTO HEADLAMPS HEADLAMPS LEVELING LEVELING YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PNK IGN WIRE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 BATT POSITIVE VOLT 1 2 GND BATT POSITIVE VOLT ACTR FRT ACTIVE SIG MTR W ACTR FRT ACTIVE SIG U GND ACTR FRT ACTIVE SIG W ACTR FRT ACTIVE SIG V ACTR FRT ACTIVE SIG GND ACTR FRT ACTIVE SIG V ACTR FRT ACTIVE SIG MTR U BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CAN BUS HIGH SERIAL DATA CAN BUS LOW SERIAL DATA SERIAL DATA + SERIAL DATA - COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (EBCM) (RIGHT FRONT CORNER OF ENGINE COMPT) GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES AFS FUSE FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) HOT W/ RUN RELAY ENERGIZED IGN 3 FUSE J/C LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LT GRN WIRE LT GRN/BLK WIRE PNK WIRE POWER STEERING CONTROL MODULE (PSCM) (LEFT SIDE OF DASH, ABOVE PARK BRAKE PEDAL) RED WIRE RED/BLK WIRE RED/WHT WIRE SERIAL DATA WAKEUP STEERING ANGLE SENSOR TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD UPPER INTERMEDIATE STEERING SHAFT WHT WIRE YEL WIRE

12 24 21 FOG LAMP SW SIG HI BEAM SW SIG GMLAN SER DATA 13 23 22 14 FLASH TO PASS SW SIG HEADLAMP ON SIG SENTINEL DISPLAY SPLY VOLTAGE 7 3 PPL PWM SIG RLY CTRL AIR CONDITIONING SYSTEM AUTO BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE FOG LAMPS IND FRONT FOG LAMP SWITCH FUSE GMLAN SERIAL DATA GRY WIRE HI BEAM RELAY HIGH BEAM IND HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH, BELOW RADIO) I/BEAM FUSE INSIDE REARVIEW MIRROR (ISRVM) INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LEFT FRONT DASH SPEAKER CONNECTOR) LO BEAM RELAY LOGIC LOW FTP LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT LO BEAM FUSE OFF PARK HEAD ORG/ WIRE PNK/WHT WIRE PPL RED/WHT WIRE RT HI LT HI BEAM BEAM FUSE FUSE RT LO BEAM SENSOR SIG SER DATA SUNLOAD SENSOR (CENTER OF DASH, IN DEFROSTER GRILLE) TAN WIRE TAN/WHT WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) W/ HIGH INTENSITY DISCHARGE W/ INTELLIGENT HIGH BEAM CONTROL W/O HIGH INTENSITY DISCHARGE W/O INTELLIGENT HIGH BEAM CONTROL WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

BLK WIRE DK GRN WIRE HIGH NOTE HORN HORN ASSEMBLY (LEFT FRONT CORNER OF VEHICLE) HORN FUSE HORN RELAY HORN RELAY CONTROL HORN SWITCH HOT AT ALL TIMES INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LOW NOTE HORN NCA WIRE SIDE OF ENGINE COMPARTMENT) TAN WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT