Cadillac STS I facelift (2007-2011) underhood fuse block (right front side of engine compt) 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

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

"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

3.6L, 4.6L W/O TRAILER PROVISIONS 4.4L, 4.6L 3.6L 4.4L, 4.6L W/ TRAILER PROVISIONS 4.6L 4.4L 3.6L 5514 (OR 2751) A/C CMPRSR CLUTCH RELAY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C REFRIG PRESS SENS BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENSOR SIGNAL ENGINE COOLING FAN ENGINE COOLING FAN RESISTOR FAN 1 FUSE A/C CLUTCH FUSE FAN-2 FUSE GRN WIRE GRY WIRE HI FAN SPD RELAY HI SPD FAN RLY CTRL HOT AT ALL TIMES HOT W/ PWR/ TRN RELAY ENERGIZED LEFT ENGINE COOLING FAN (BEHIND RADIATOR) LO FAN SPD RELAY LOW REF LOW REFERENCE LOW SPD FAN RLY CTRL LT BLU WIRE MODE ACTUATOR (ON TOP LEFT SIDE OF HVAC MODULE) ORG/ WIRE ORG/BLK WIRE POST 02 SNSR FUSE RIGHT ENGINE COOLING FAN (BEHIND RADIATOR) S/P FAN RELAY SERIAL DATA BUS- TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE

A/C CMPRSR CLTCH RELAY A/C COMPRESSOR CLUTCH AC CLTCH FUSE BLK WIRE COMPUTER DATA LINES SYSTEM DATA BUS - DK GRN WIRE DK GRN/WHT WIRE EXCEPT 3.6L 3.6L GRY WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED LOW REF ORG/ WIRE ORG/BLK WIRE POST 02 SNSR FUSE RLY CTRL SENS SIG TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) WHT WIRE

3.6L, 4.6L W/O TRAILER PROVISIONS 4.4L, 4.6L 3.6L 4.4L, 4.6L W/ TRAILER PROVISIONS 4.6L 4.4L 3.6L BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ECT SENSOR SIGNAL ENGINE COOLING FAN ENGINE COOLING FAN RESISTOR FAN 1 FUSE FAN-2 FUSE GRY WIRE HI FAN SPD RELAY HI SPD FAN RLY CTRL HOT AT ALL TIMES HOT W/ PWR/ TRN RELAY ENERGIZED LEFT ENGINE COOLING FAN (BEHIND RADIATOR) LO FAN SPD RELAY LOW REFERENCE LOW SPD FAN RLY CTRL LT BLU WIRE POST 02 SNSR FUSE RIGHT ENGINE COOLING FAN (BEHIND RADIATOR) S/P FAN RELAY SERIAL DATA BUS- TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (RIGHT FRONT SIDE OF ENGINE COMPT) 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