Cadillac STS I facelift (2007-2011) red Wiring diagrams

1 2 3 4 5 6 IGNITION 1 VOLTAGE 3 27 GND 5 V REF LO REF SENS SIG 42 55 52 SERIAL DATA BUS + SERIAL DATA BUS - TCC/CRUISE CONTROL RELEASE SIG ACCELERATOR PEDAL POSITION (APP) SENSOR (ATTACHED TO TOP OF ACCELERATOR PEDAL) AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE CCP/RLY COILS FUSE COMPUTER COMPUTER DATA LINES DATA LINES SYSTEM SYSTEM COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND CRUISE SW SIG 21 22 SERIAL DATA GMLAN SERIAL DATA GMLAN DISPLAY DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND FRONT FASCIA, NEAR HOOD LATCH) DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ECM/TCM IGN FUSE ENGINE CONTROL MODULE (ECM) (FRONT OF ENGINE, ON RIGHT VALVE COVER) GMLAN SERIAL DATA GMLAN SERIAL WAKE UP GMLAN SERIAL DATA + GMLAN SERIAL DATA - GROUND GRY WIRE HEAD UP DISPLAY (HUD) (IF EQUIPED) HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LOGIC LT BLU WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL ACCY SUPPLY PPL PPL SOUND SYSTEMS RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TCC/CRS CNTL THROTTLE BODY ASSEMBLY (TOP FRONT OF ENGINE) TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 IGNITION 1 VOLTAGE 2500 2501 COMPUTER DATA LINES SYSTEM 3 27 GND 5 V REF LO REF SENS SIG 4.6L 53 33 SERIAL DATA BUS + SERIAL DATA BUS - ACCELERATOR PEDAL POSITION (APP) SENSOR (ATTACHED TO TOP OF ACCELERATOR PEDAL) AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE CCP/RLY COILS FUSE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND CRUISE SW SIG 21 22 SERIAL DATA GMLAN SERIAL DATA GMLAN DISPLAY DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND FRONT FASCIA, NEAR HOOD LATCH) DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ECM/TCM IGN FUSE GMLAN SERIAL DATA GMLAN SERIAL WAKE UP GMLAN SERIAL DATA + GMLAN SERIAL DATA - GROUND GRY WIRE HEAD UP DISPLAY (HUD) (IF EQUIPED) HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LOGIC LT BLU WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL ACCY SUPPLY PPL PPL SOUND SYSTEMS RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TCC/CRS CNTL TCC/CRUISE CNTL REL SIG THROTTLE BODY ASSEMBLY (TOP FRONT OF ENGINE) TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 IGNITION 1 VOLTAGE 2500 2501 COMPUTER DATA LINES SYSTEM 3 27 GND 5 V REF LO REF SENS SIG 4.6L 53 33 SERIAL DATA BUS + SERIAL DATA BUS - ACCELERATOR PEDAL POSITION (APP) SENSOR (ATTACHED TO TOP OF ACCELERATOR PEDAL) AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION SENSOR (ATTACHED TO TOP OF BRAKE PEDAL ASSEMBLY) BRN WIRE CCP/RLY COILS FUSE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH CRUISE IND CRUISE SW SIG 21 22 SERIAL DATA GMLAN SERIAL DATA GMLAN DISPLAY DISTANCE SENSING CRUISE CONTROL MODULE (BEHIND FRONT FASCIA, NEAR HOOD LATCH) DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ECM/TCM IGN FUSE GMLAN SERIAL DATA GMLAN SERIAL WAKE UP GMLAN SERIAL DATA + GMLAN SERIAL DATA - GROUND GRY WIRE HEAD UP DISPLAY (HUD) (IF EQUIPED) HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED IGNITION INSTRUMENT PANEL CLUSTER (IPC) INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) LOGIC LT BLU WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL ACCY SUPPLY PPL PPL SOUND SYSTEMS RED WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE TCC/CRS CNTL TCC/CRUISE CNTL REL SIG THROTTLE BODY ASSEMBLY (TOP FRONT OF ENGINE) TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

28 CM 29 PNK WIRE 5 6 7 8 PPL AUXILIARY MODE ACTUATOR (INSIDE CENTER CONSOLE, ON RIGHT REAR SIDE) BATT POSITIVE VOLT LOW REF GND BLK WIRE BLK/WHT WIRE BLOWER MTR SPD CTRL BLU WIRE BLWR FUSE BRN WIRE CCP FUSE (RIGHT FRONT SIDE OF ENGINE COMPT) CCP/ RLY COILS COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/BLK WIRE DK GRN WIRE DK LT FRT BLWR RELAY FUSE GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH, BELOW RADIO) INTERIOR LIGHTS SYSTEM 1614 2273 1236 1199 LED BACKLIGHT DIMMING CTRL LOW SPD GMLAN SERIAL DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT LT LT PPL MEDIUM BLOWER MTR CTRL NCA WIRE ORG/ WIRE PNK RUN/CRANK IGN 1 VOLT WIRE PPL PPL/WHT WIRE RECIRCULATION ACTUATOR (ON HVAC MODULE, LEFT OF BLOWER MOTOR) RED WIRE RED/WHT WIRE TAN WIRE TAN/RED WIRE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

1 2 BLOWER MTR SPLY VOLT BLOWER MTR FAN CTRL PPL 2 PPL/ 20 PNK WIRE 5 6 7 8 PPL AUXILIARY HVAC CONTROL MODULE (W/ REAR HEATED SEAT) BLK WIRE BLOWER MOTOR (UNDER DASH, BEHIND GLOVE BOX) BLOWER MOTOR CONTROL MODULE (BEHIND RIGHT SIDE OF INSTRUMENT PANEL) BLOWER MTR RESISTOR ASSEMBLY SPLY VOLT BLOWER MTR SPD CTRL BLU WIRE DK BLU WIRE DK BLU/BLK WIRE EVAPORATOR TEMPERATURE SENSOR (INSIDE HVAC CASE, AT EVAPORATOR CORE) GND VOLT 4 LT 3 PNK WIRE GRN WIRE GRY WIRE GRY/BLK WIRE HOT W/ RUN/ CRNK RELAY ENERGIZED HTD WASH/ AQS FUSE LEFT AIR TEMPERATURE ACTUATOR (LEFT CENTER OF DASH, ON LEFT SIDE OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/ WIRE PPL PPL LT PPL/WHT WIRE RED WIRE RUN/CRANK IGN 1 SIDE OF ENGINE COMPT) TAN WIRE TAN/RED WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/GRN 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

ABS MTR FUSE ANTI-LOCK BRAKES SYSTEM BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY INSTRUMENT PANEL CLUSTER (IPC) ECM/TCM/IGN FUSE GRY WIRE HIGH LOW GND SERIAL SERIAL DATA DATA HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY ENERGIZED ING 1 LOGIC LT GRN WIRE PNK IGN 1 VOLT GMLAN SERIAL DATA WIRE PNK WIRE RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) VARIABLE EFFORT STEERING ACTUATOR (IN LEFT REAR ENGINE COMPT, ON STEERING RACK) WHT WIRE

AUTOMATIC LEVEL ELEC RELAY CTRL BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM 2500 1206 COMPUTER DATA LINES SYSTEM 2500 1212 DATA SIGNAL BATTERY VOLTAGE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY EKM/I/P MDL FUSE ELC CMPRSR FUSE ELC CMPRSR RELAY ELECTRONIC SUSPENSION CONTROL (ESC) MODULE (BELOW RIGHT "C" PILLAR) GMLAN SER DATA - GMLAN SER DATA + SENSOR LOW REF RR DAMPING INCREASE GMLAN SER DATA - GMLAN SER DATA + SENSOR LOW REF SENSOR LOW REF GRN WIRE GRY WIRE HIGH SERIAL DATA LO SERIAL DATA HOT AT ALL TIMES HOT W/ RUN RELAY ENERGIZED IPC CLASS 2 LEFT FRONT SHOCK ABSORBER ACTUATOR (TOP OF LEFT FRONT STRUT TOWER) LEFT FRONT SUSPENSION POSITION SENSOR (NEAR LEFT FRONT STRUT) LEFT REAR FUSE BLOCK (UNDER LEFT SIDE OF REAR SEAT) LEFT REAR SHOCK ABSORBER ACTUATOR (TOP OF LEFT REAR STRUT TOWER) LEFT REAR SUSPENSION POSITION SENSOR (NEAR LEFT REAR STRUT) LF POSITION SENS RF POSITION SENS RR POSITION SENS LF SENS VOL REF RF SENS VOL REF LR SENS VOL REF RR SENS VOL REF LOGIC INSTRUMENT PANEL CLUSTER (IPC) LR DAMPING CTRL LR DAMPING CTRL RF RAID CTRL LF DAMPING CTRL LR POSITION SENS LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MRTD MDL FUSE ELC EXH FUSE NCA WIRE ORG/ WIRE ORG/BLK WIRE PPL PPL RR DAMPING DECREASE RF DAMPING CTRL LF DAMPING INCREASE GROUND PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT SHOCK ABSORBER ACTUATOR (TOP OF RIGHT FRONT STRUT TOWER) RIGHT FRONT SUSPENSION POSITION SENSOR (NEAR RIGHT FRONT STRUT) RIGHT REAR SHOCK ABSORBER ACTUATOR (TOP OF RIGHT REAR STRUT TOWER) RIGHT REAR SUSPENSION POSITION SENSOR (NEAR RIGHT REAR STRUT) SENSOR LOW REF TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 I/P LAMP FUSE SPLY VOLT 1 BACKLIGHT LAMP CTRL LED BACKLIGHT DIMMING CTRL BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM POWER DISTRIBUTION SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE EXTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM GRY WIRE HEADLAMP WASHER RLY CTRL HOT AT ALL TIMES HOT W/ PARK LAMP RELAY ENERGIZED I/P MDL/ ALDL FUSE INSTRUMENT PANEL MODULE (IPM) (RIGHT SIDE OF DASH, BEHIND GLOVE BOX) INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM NAVIGATION, SOUND SYSTEMS LIC/DIM FUSE LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/WHT WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL REMOTE RADIO CTRL HEAD ACC SPLY VOLT IGN MODE SW OFF LED SIG RED WIRE RED/WHT WIRE SIDE OF ENGINE COMPT) STOP LAMP SW SIG RUN/CRANK IGN 1 VOLTAGE PNK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT V/ CHECK FUSE WHT WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

ANTI-THEFT SYSTEM BATT POSITIVE VOLTAGE BLK WIRE BLK/WHT WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SWITCH SIGNAL CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM INTERIOR LIGHTS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM DEFOGGER SYSTEM POWER TOPS SYSTEM GRY WIRE HOOD OPEN SW SIG HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED J/C LOW SPD GMLAN SERIAL DATA LR STOP/TURN LMP SPLY VOLTAGE LT BLU WIRE LT BLU/WHT WIRE LT TRN/ LDW FUSE NAVIGATION SYSTEM ORG/BLK WIRE PNK WIRE REAR PARKING ASSIST CHIME SIG RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT REAR FUSE BLOCK (UNDER RIGHT SIDE OF REAR SEAT) RIM FUSE RIM/RPA/ ISRVM/CLM FUSE RR TURN SIG LMP SPLY VOLTAGE HOOD CLOSED SW SIG PPL RT TRN/ SBZA FUSE STEERING WHEEL CTRL SPLY VOLT COURTESY LAMP SPLY VOLTAGE TAN WIRE TRUNK AJAR SW SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE