GMC Sierra III (2013-2015) brn Wiring diagrams

1 3 2 6 12-VOLT REF LO SERIAL DATA HI SERIAL DATA GROUND 12 13 12-VOLT REF BRAKE SW SIG PARK BRAKE SW SIG PPL 12-VOLT REF ANGLE SENSOR PHASE B CAN BUS LOW SERIAL DATA 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 DATA BUS+ DATA BUS- 2500 2501 COMPUTER DATA LINES SYSTEM 2501 2501 COMPUTER DATA LINES SYSTEM 5-VOLT REF VEHICLE SPEED SIGNAL CAN BUS HIGH SERIAL DATA ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE COMPUTER DATA LINES SYSTEM DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LOGIC LOW REF 12-VOLT REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL PPL RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) RIGHT REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) SERIAL DATA SERIAL DATA BATTERY POSITIVE VOLTAGE SERIAL DATA BUS (+) SERIAL DATA BUS (+) BATTERY POSITIVE VOLTAGE SERIAL DATA BUS- SERIAL DATA BUS- GROUND SIG STEERING ANGLE SENSOR (ON STEERING COLUMN) STOP LAMP SWITCH (TOP OF BRAKE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL INDICATOR TRACTION CONTROL SWITCH TRACTION CTRL SW SIG VEHICLE SPD SIG RADIO WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE TRIM PANEL) YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 B+ 5-VOLT REF 12-VOLT REF 12-VOLT REF LR SIG WHEEL SPD SENS 16 17 DATA BUS+ DATA BUS- 2 4 3 1 SERIAL DATA 12-VOLT SERIAL DATA LOW REF 21 22 23 24 25 26 27 12-VOLT REF LF WHEEL SPD SENS SIG 2500 2500 COMPUTER DATA LINES SYSTEM 2500 2501 COMPUTER DATA LINES SYSTEM 35 36 37 38 SERIAL DATA 4.3L 6032 (OR 817) ABS INDICATOR ABS-1 FUSE 61 ABS-2 FUSE 9 BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE CAN BUS HIGH SERIAL DATA GROUND COMPUTER DATA LINES SYSTEM DATA SERIAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER DISPLAT ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) I/P MULTI-FUNCTION SWITCH (W/ ACTIVE BRAKE CONTROL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 (GAS) FUSE 43 (DIESEL) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LF WHEEL SPD SENS SIG LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PARK BRK SW POWER DISTRIBUTION SYSTEM PPL RADIO RED WIRE RED/BLK WIRE RED/WHT WIRE RF SIG WHEEL SPD SENS RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SENSOR PHASE A 5-VOLT REF BOOSTER VACUUM SENS SIG SERIES) SIG STEERING ANGLE SENS SIG STEERING ANGLE SENSOR STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL INDICATOR TRACTION CONTROL SWITCH TRACTION CTRL SW SIG 12 13 12-VOLT REF PPL BRAKE SW SIG VEH SPD SIGNAL VEHICLE SPD SIG VEHICLE SPD SIG LOW REF GROUND SERIAL DATA BUS- SERIAL DATA BUS- W/ ACTIVE BRAKE CONTROL W/O ACTIVE BRAKE CONTROL WHT WIRE WHT/ BLK WIRE YAW RATE, LATERAL ACCELERATION SENSOR (W/ ACTIVE BRAKE CONTROL) YEL WIRE YEL/BLK WIRE

1 2 3 4 1140 5060 B+ GMLAN 1 3 4 B+ SNS SIG SNS SIG 14 15 RR AJAR SW LR AJAR SW 18 24 23 HORN RLY PRL LP RLY HDLP RLY 1851 5060 COMPUTER DATA LINES SYSTEM 23 8 20 INTRUS SIG RF DR AJR SW DR KEY SW 28 45 HORNS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM 3 10 B+ GMLAN 4 6 B+ GND ACC V B+ SNS SIG SNS SIG B+ VOLT GND GMLAN BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COAX ANT COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM GMLAN DDM FUSE 4 DIM FUSE 7 BCM FUSE 15 DISTRIBUTION SYSTEM POWER DK BLU WIRE DK GRN WIRE DLIS FUSE 35 FUSE 32 DOOR AJAR INDICATOR DRIVER DOOR LOCK SWITCH DRIVER DOOR LOCK/ WINDOW SWITCH DSM FUSE 25 EXCEPT 6.6L 6.6L FUSE 52 FUSE 49 GMLAN GROUND (ON RIGHT FRONT CORNER OF HVAC MODULE) DISTRIBUTION SYSTEM GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HOOD AJAR SWITCH HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM INTERIOR LIGHTS SYSTEM RF AJAR SW KEYLESS ENTRY ANTENNA LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LF AJAR SW LOCK LOGIC LOGIC 4 6 B+ GND LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OFF PASSENGER DOOR LOCK/ WINDOW SWITCH PDM FUSE 9 (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE) PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL INTRUS SIG PPL SW SIG RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RUN WIRE SEC IND SECURITY IND DRIVER INFORMATION CENTER (DIC) DISPLAY SECURITY INDICATOR LAMP SW SIG TAN WIRE TAN/WHT WIRE THEFT DETERRENT CONTROL MODULE (ON RIGHT SIDE OF STEERING COLUMN) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK VEHICLE INCLINATION SENSOR VEHICLE SHOCK SENSOR W/ ACTIVE BRAKE CONTROL W/ FRONT INDIVIDUAL SEAT, POWER MIRROR W/ FRONT SEAT, POWER MIRROR W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ REMOTE KEYLESS ENTRY, PTO YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 AIR TMP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 B(+) A/C ON AIR TEMP RF SUNLD AMB AIR TMP GMLAN L AMBIENT AIR TEMPERATURE SENSOR (ON LEFT SIDE OF RADIATOR SUPPORT) AMBIENT LIGHT/SUNLOAD SENSOR ASSEMBLY (TOP CENTER OF DASH) AUTO BATT POS VOLT BLK WIRE BLK/WHT WIRE BREAKOUT) BRN WIRE COLNT LVL GROUND LOW REF COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ENGINE COOLANT LEVEL SWITCH (6.6L) (ON BOTTOM OF SURGE TANK) EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FAN DN FAN UP FRESH AIR FRNT DFG FRT DEF A/C IND FSH AIR GROUND GROUND DISTRIBUTION SYSTEM GROUND IGN 3 REAR DEFOG GRY WIRE GRY/BLK WIRE HVAC CONTROL MODULE INSTRUMENT PANEL CLUSTER (IPC) DRIVER INFORMATION CENTER (DIC) DISPLAY LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT SUNLOAD SENSOR LEFT TEMP CONTROL LF SUNLD L AIR TMP R AIR TMP LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE DN MODE UP MTR SPD CTRL OFF ORG/ WIRE POWER DISTRIBUTION SYSTEM DEFOGGER SYSTEM PPL PPL/WHT WIRE R AIR TMP AIR TMP R AIR TMP TEMP SENS MODE CTRL L AIR TMP RECIR CTRL R AIR TMP REAR DFG RECIR RECIRC RED WIRE RED/WHT WIRE RER DEF RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RIGHT SUNLOAD SENSOR RIGHT TEMP CONTROL SERIAL DATA TAN WIRE UPPER LEFT AIR TEMPERATURE SENSOR (UNDER UPPER LEFT SIDE OF DASH) UPPER RIGHT AIR TEMPERATURE SENSOR (UNDER UPPER RIGHT SIDE OF DASH) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

19 14 69 71 RLY SPD SIG 2501 2500 COMPUTER DATA LINES 40 24 30 46 LOW REF ECT SENS SIG 6.0L 6.6L A/C CMPRSR FUSE 17 (EXCEPT 6.6L) FUSE 16 (6.6L) A/C CMPRSR RELAY A/C COMPRESSOR CLUTCH (ON FRONT BLK WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLING FAN (6.6L) (FRONT CENTER OF ENGINE COMPT) EXCEPT 6.6L 6.6L FROM PWR/TRN RELAY (DIAGRAM 3 OF 3) FUSE HOLDER GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC BLWR FUSE 70 HVAC IGN FUSE 55 (EXCEPT 6.6L) FUSE 52 (6.6L) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE OF A/C COMPRESSOR) ORG/BLK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RLY CTRL RUN/ CRNK RELAY SENS SIG PWRTRN RLY CTRL FAN RLY CTRL FAN RLY CTRL SPD SIG LOW REF SYSTEM 459 5514 TAN WIRE TAN/BLK WIRE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE COMPRSR RELAY (DIAGRAM 2 OF 3) COOLING FAN DIODE 1 COOLING FAN DIODE 2 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EXCEPT 6.0L FAN CNTRL RELAY FAN FUSE 68 FAN HI RELAY FAN LO RELAY FAN RELAY FAN-1 FUSE 60 FAN-2 FUSE 62 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES LEFT AIR TEMPERATURE ACTUATOR (BOTTOM LEFT OF HVAC MODULE) LOGIC LEFT COOLING FAN (EXCEPT 6.0L) (LEFT FRONT OF ENGINE COMPT) LOGIC LOGIC B+ GND LOWER LEFT AIR TEMPERATURE SENSOR (LEFT SIDE OF HVAC MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (LOWER LEFT OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE ACTUATOR (LEFT END OF HVAC MODULE) ORG/BLK WIRE PPL PWR/ TRN RELAY RECIRCULATION ACTUATOR (TOP RIGHT SIDE OF HVAC MODULE) RIGHT AIR TEMPERATURE ACTUATOR (TOP MIDDLE OF HVAC MODULE) LOGIC RIGHT COOLING FAN (RIGHT FRONT OF ENGINE COMPT) TAN WIRE TO A/C UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

AMBIENT LT SENS SIG HEADLAMP SW HEADLAMP ON SIG ANTI-LOCK BRAKES SYSTEM POWER DISTRIBUTION SYSTEM BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COURTESY LAMPS CTRL CRUISE CONTROL SYSTEM DIM FUSE 7 DK BLU/WHT WIRE DK GRN WIRE GRY WIRE HEADLAMP SW HEADLAMP OFF SIG COURTESY LAMP SUPPLY VOLT HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, IG 3 VOLT CRUISE CTRL SW SIG 5 VOLT REF WIPER SW HI SIG STEER WHL CTRL SW SIG IGNITION SWITCH KEY-IN IGNITION SWITCH LOW REF WIPER SW LOW SIG LT BLU WIRE LT GRN WIRE OFF ORG/ WIRE PNK WIRE PNK/BLK WIRE PPL PPL INTERIOR LAMP DEFEAT SW SIG RED/WHT WIRE RUN WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CTRL SW SIG ACCESSORY VOLT WHT WIRE WIPER/WASHER SYSTEM SOUND SYSTEMS WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE

2501 2500 COMPUTER DATA LINES SYSTEM 4340 7521 (OR 1940) B+ RLY ENABLE BLK RED/ WIRE BLK WIRE BRN WIRE COMM DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE EXCEPT 10 SERIES EXCEPT 10 SERIES 10 SERIES EXCEPT 6.6L 6.6L W/O 10 SERIES FSCM FUSE 21 GMLAN - GMLAN + GMLAN - GMLAN + LOW REF RLY FEEDBACK HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) ITBC FUSE 6 FUSE 19 LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MISC IGN FUSE 43 FUSE 40 PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLK WIRE RED/WHT WIRE STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) STUD 2 FUSE 63 FUSE 58 TAN WIRE TAN/BLK WIRE TCC BRK SIG TRAILER BRAKE (BLUNT CUT) TRAILER BRAKE CONTROL SWITCH TRAILER CONNECTOR (AT REAR OF VEHICLE) TRAILER) TRL BRK RLY IGN 1 VOLT TRL BRK SIG TRL BRK SIG RLY FEEDBACK W/ HEAVY DUTY TRAILER WHEEL HARNESS TRAILER WHEEL TRAILER CAMPER TRAILER PROVISION (BLUNT CUT) (ON LEFT REAR BODY MOUNT) WHT WIRE YEL WIRE YEL/BLK WIRE

4 HI IND CTRL GMLAN SERIAL DATA 1 (+) GMLAN SERIAL DATA 1 (-) 4 LO IND CTRL RUN/CRANK IGN 1 VOLT 5985 2500 2501 COMPUTER DATA LINES SYSTEM ACCY WAKEUP SERIAL DATA GMLAN SERIAL DATA 1 (+) GMLAN SERIAL DATA 1 (-) ACCY/ RUN CRNK FUSE AWD IND CTRL NEUTRAL IND CTRL 2 HI IND CTRL BLK WIRE BLK/ GRY WIRE BLK/ VIO WIRE BLU/GRY WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM 1553 1552 1342 550 DK BLU WIRE DK BLU/YEL WIRE FRONT AXLE ENGAGEMENT ACTUATOR (ON REAR OF FUSE FUSE BLOCK (LOWER LEFT SIDE OF DASH) GRY/BLK WIRE GRY/LT GRN WIRE GRY/PPL WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK LOGIC LT GRN/BLK WIRE MTR COUNTER CLOCKWISE CTRL MTR CLOCKWISE CTRL BATT + GND POWER DISTRIBUTION SYSTEM RED/GRY WIRE SERIAL DATA TRANS IGN FUSE TRANSFER CASE SHIFT CONTROL MODULE (LOWER LEFT SIDE OF DASH) TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VIO WIRE VIO/BLK WIRE VIO/LT GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT YEL/ WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

2-HI IND 4-HI IND 4-LO IND BLK WIRE BLK/LT GRN WIRE BLU/GRY WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DATA 1 (+) DK BLU WIRE DK BLU/YEL WIRE ENGINE BLOCK) ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GRY/LT GRN WIRE GRY/RED WIRE IGN 3 ILL INSTRUMENT PANEL JUNCTION BLOCK LOW REF LT GRN/BLK WIRE NEUTRAL IND RED/GRY WIRE SERIAL SERIAL DATA (-) (1) SNSR SIG TRANSFER CASE MOTOR (ON TRANSFER CASE) TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) TRANSMISSION OUTPUT SHAFT SPEED SENSOR (IN TRANSMISSION) VEH SPD VEH SPD SNSR VIO WIRE VIO/BRN WIRE VIO/LT GRN WIRE VIO/WHT WIRE WHT WIRE WHT/LT GRN WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/VIO WIRE