GMC Sierra III (2013-2015) (upper left corner of dash) Wiring diagrams

10 11 HIGH SPEED BUS (+) 6.6L CHEVROLET GMC AUTOMATIC TRANSMISSION (6.6L) AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION ( 6.0L) BCK/UP LAMP PCB RELAY BCK/UP RLY BCK/UP SIG BCM FUSE 15 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL TRANSMISSION SOLENOID CONTROL VALVE MODULE ASSEMBLY (TCM) CONVENIENCE PACKAGE DASH) DATA BUS - DK BLU WIRE DK GRN WIRE GMLAN SERIAL HI SPD GRD GRN WIRE GROUND DISTRIBUTION GROUND DISTRIBUTION SYSTEM GRY WIRE HIGH SPEED BUS - HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF INSIDE REARVIEW MIRROR (ISRVM) LEFT BACKUP LAMP LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT LOWER TAIL/STOP, TURN SIGNAL LAMP LEFT UPPER TAIL/STOP, TURN SIGNAL LAMP LOW REF LOW SPEED 10 3 5 SERIAL DATA B+ GND LT GRN WIRE MJR NCA WIRE PNK/BLK WIRE POSITION SWITCH) POWER DISTRIBUTION SYSTEM REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REARVIEW CAMERA (LEFT OF TAILGATE HANDLE) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP SW SIG A SW SIG B SW SIG C SW SIG P SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRAILER TOW CIRCUIT TRANS RANGE SIG A TRANS RANGE SIG B TRANS RANGE SIG C TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) TRLR BCK/UP FUSE 10 FUSE 9 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEH BCK/UP FUSE 15 FUSE 14 W/ COMFORT, DECOR LEVEL 3 W/ REARVIEW CAMERA W/ SPO REARVIEW CAMERA WHT WIRE YEL WIRE YEL/BLK WIRE

17 12 8 11 HDLP OFF HDLP ON PRK LMP AMB LGHT 18 25 HDLP DIM SW SIG FLASH TO PASS 23 11 DRL RLY FOG LMP RLY 2500 2501 COMPUTER DATA LINES SYSTEM 8 9 SERIAL DATA + SERIAL DATA - BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT CHEVROLET DK BLU WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT (OR ORG) WIRE DK GRN/WHT WIRE DRL 2 FUSE 33 FUSE 30 FLASH TO PASS SWITCH FOG LP SW FUSE 10 GASOLINE DIESEL GMC GRY WIRE HDLP LO/HID RELAY HEADLAMP DIMMER SWITCH HI BEAM PCB RELAY HI BEAM RLY HI HEAD- LAMP LT FUSE 32 FUSE 29 HI HEAD- LAMP RT FUSE 30 FUSE 21 HOT AT ALL TIMES LEFT FRONT SIDE MARKER LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LO BEAM RLY LO HDLP LT FUSE 11 LO HDLP RT FUSE 16 FUSE 15 LOWER LEFT PARK/TURN SIGNAL LAMP LOWER RIGHT PARK/TURN SIGNAL LAMP LT BLU WIRE LT GRN/ BLK WIRE LT GRN/BLK (OR ORG) WIRE LT GRN/BLK WIRE ORG/ WIRE PK BRAKE SIG PNK/WHT WIRE POWER DISTRIBUTION SYSTEM RED/BLK WIRE RIGHT FRONT SIDE MARKER LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP SIDE OF DASH) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TO FOG LAMP RELAY (DIAGRAM 2 OF 2) TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (DIESEL: RIGHT SIDE OF FIREWALL) UPPER LEFT PARK/TURN SIGNAL LAMP UPPER RIGHT PARK/TURN SIGNAL LAMP WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL FUSE 31 FUSE 28 DRL PCB RELAY FOG LAMP FUSE 26 FUSE 25 FOG LAMP IND FOG LAMP RELAY FOG LAMP SWITCH FROM HDLP LO/HID RELAY (DIAGRAM 1 OF 2) GASOLINE DIESEL GMLAN SERIAL DATA GROUND DISTRIBUTION HEAD PARK AUTO HEADLAMP, PANEL DIMMER SWITCH HI-BEAM IND INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 FUSE 43 LEFT FRONT FOG LAMP (IF EQUIPPED) LEFT I/P JUNCTION BLOCK LOGIC LT BLU WIRE LT GRN/BLK WIRE MANUAL A/C AUTOMATIC A/C OFF OFF HEAD ORG/ WIRE PARK AUTO PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE RIGHT FRONT FOG LAMP SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

10 20 8 LF DR SW DR DOOR RF DR SW 15 14 LR DR SW RR DR SW 1639 5060 COMPUTER DATA LINES SYSTEM ABS IND. AIR BAG IND AUX HVAC-IGN FUSE 48 FUSE 45 B+ DIC SW SIG BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE IND BRK SW CTRL BRN WIRE BRN/WHT WIRE CHARGE IND COMPUTER DATA LINES SYSTEM COOLANT TEMPERATURE GAUGE CRUISE IND DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) ELECTRONIC COMPASS MODULE ENGINE CONTROLS SYSTEM FOG LAMP IND FUEL GAUGE GRY/BLK WIRE HIGH BEAM IND HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH IGN IGN 1 GMLAN SERIAL IGN VOLT INSTRUMENT PANEL CLUSTER (IPC) INTERCONNECT NETWORK BUS IPC FUSE 46 FUSE 43 LEFT I/P JUNCTION BLOCK LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT TURN IND LINEAR LOGIC LOW OIL IND LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION IND (MIL) MIL CNTRL PASS SEAT BELT NETWORK BUS ODOMETER OIL GAUGE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PASS SEAT BELT IND PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE RIGHT TURN IND RUN/ CRNK RELAY RUN/CRK SEAT BELT IND SECURITY IND SERIAL DATA LOW SPD BUS SPEEDOMETER SUPPLEMENTAL RESTRAINTS SYSTEM SW SIG TACHOMETER TAN WIRE TAN/WHT WIRE TIRE PRESSURE IND TOW/HAUL IND TRACTION CONTROL IND TRANSMISSION TEMPERATURE GAUGE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VOLTS GAUGE W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE WAIT TO START IND (6.6L) WIPER/WASHER SYSTEM YEL WIRE

10 SERIES EXCEPT 10 SERIES W/ ELECTRONIC DOOR LOCK CONTROL 2 3 16 31 39 24 FUEL LVL SIG LO REF 4.3L 6.0L (VIN G) 6.0L (VIN J) 5 13 9 LOW REF SW SIG SER DATA 58 28 FUEL LVL SIG LO REF 6.6L 4.8L, 5.3L, 6.2L 9 41 OIL LVL SIG LO REF 9 5 4 13 SER DATA LOW REF SW SIG SW SIG ALTERNATIVE FUEL PRESSURE SENSOR (6.0L (VIN B)) BLK WIRE BLK/WHT WIRE BLU/YEL WIRE BRN WIRE CNG CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER DOOR LATCH ASSEMBLY (W/O BUCKET SEATS, POWER MIRRORS) DRIVER DOOR LOCK/WINDOW SWITCH ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL (EOL) SWITCH (LEFT SIDE OF ENGINE OIL PAN) EXCEPT 4.3L 4.3L EXCEPT HYBRID HYBRID FUEL LVL SIG FUEL PUMP DISABLE CONTROL MODULE (TOP REAR OF CNG REGULATOR MOUNTING BRACKET) GRN/WHT WIRE GRY WIRE GRY/BLK WIRE HI SPD SER DATA BUS (-) HI SPD SER DATA BUS (+) 10 38 HYBRID EXCEPT HYBRID I/P FUSE BLOCK (LEFT SIDE OF DASH, INFORMATION VEHICLE LOCK CONTROL LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE OIL PRESS SIG PASSENGER DOOR LOCK/WINDOW SWITCH PERSONALI- PNK WIRE PPL PPL 44 9 64 27 RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SERIAL DATA SET/ RESET SYSTEM TAN WIRE TAN/ BLK WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP/FUEL W/ DUAL FUEL TANK WIPER/ WASHER SYSTEM YEL WIRE ZATION

3 8 DIM CNTRL PRK LP SIG 5 8 PPL 5060 6817 6816 COMPUTER DATA LINES SYSTEM 6086 974 29 8 IND CTRL LOW REF PPL ANTI-LOCK BRAKES SYSTEM AUTOMATIC A/C BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DIM IS LPS FUSE FUSE DIM SIG DK GRN WIRE DK GRN/WHT WIRE DRIVER HEATED SEAT SWITCH (W/ SPO HEATED SEATS) DRIVER INFORMATION CENTER (DIC) SWITCH (W/ ACCESSORY STEERING WHEEL CONTROL) EXHAUST BRK SW SIG GRY/BLK WIRE HEAD HEADLAMP, PANEL DIMMER SWITCH HEATED SEATS HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) HVAC CONTROL MODULE (IF EQUIPPED) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) LEFT STEERING WHEEL CONTROL SWITCH LOGIC LOW REF LT BLU WIRE OFF AUTO PARK ORG/WHT WIRE PASSENGER HEATED SEAT SWITCH (W/ SPO HEATED SEATS) POWER TAKE OFF (PTO) MODULE (OUTSIDE OF RIGHT FRONT CHASSIS FRAME) POWER TAKE OFF (PTO) SWITCH (IF EQUIPPED) PPL/WHT WIRE RADIO RED/WHT WIRE RIGHT STEERING WHEEL CONTROL SWITCH RR PRK ASSIST SECURITY WIRING PROVISIONS SERIAL DATA 10 18 25 BUS LED DIM DIM CTRL SWC BKLT FUSE 3 TAN WIRE TRAILER BRAKE CONTROL SWITCH (IF EQUIPPED) W/ ACCESSORY STEERING CONTROL, W/ ADOMETER W/ ACCESSORY STEERING WHEEL CONTROL W/ ELECTRIC DOOR LOCK CONTROL W/ LUXURY W/O ACCESSORY EDITION, STEERING ODOMETER WHEEL CONTROL SECURITY W/ SPO W/ SPO HEATED SEATS W/ TRAILER BRAKE CONTROL W/O SPO HEATED SEATS YEL WIRE

2 HI 4 HI 4 LO 6 12 13 14 1563 1566 1565 1561 2 HI 4 HI 4 LO AWD AUTO (IF EQUIPPED) PNK WIRE BLK WIRE BRN/WHT WIRE CREW CAB DRIVER DOOR LOCK SWITCH DRIVER WINDOW SWITCH GARAGE DOOR OPENER (GDO) (IF EQUIPPED) SLIDING REAR WINDOW SWITCH (IF EQUIPPED) LEFT REAR WINDOW SWITCH LOGIC LT GRN/BLK WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER DOOR LOCK SWITCH PASSENGER WINDOW SWITCH PNK WIRE PPL/WHT WIRE RIGHT REAR WINDOW SWITCH SUNROOF SWITCH (IF EQUIPPED) TAN/BLK WIRE TRANSFER CASE SHIFT CONTROL MODULE (LOWER LEFT SIDE OF DASH) TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) W/ ELECTRIC DOOR LOCK CONTROL W/ POWER WINDOWS

193 735 1050 DEFOGGER SYSTEM A/C CMPRSR FUSE 17 (EXCEPT 6.6L) FUSE 16 (6.6L) A/C CMPRSR RELAY A/C IND A/C ON AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BLK WIRE BLK/WHT WIRE COLNT LVL COMPUTER DATA LINES SYSTEM DFRST VAL FRH AIR BLWR SPD FRESH AIR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT LEVEL SWITCH (6.6L) (ON BOTTOM OF SURGE TANK) EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FROM PWR/TRN RELAY (DIAGRAM 2 OF 3) GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC BATT FUSE 39 (EXCEPT 6.6L) FUSE 36 (6.6L) HVAC BLWR FUSE 70 (EXCEPT 6.6L) FUSE 65 (6.6L) HVAC IGN FUSE 55 (EXCEPT 6.6L) FUSE 52 (6.6L) INTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM 6817 300 1851 3340 5060 LED CNTL IGN 3 GROUND B(+) GMLAN L LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LO REF RECIRC LOW REF LT GRN WIRE LT GRN/BLK WIRE MODE LOGIC SWITCH HVAC CONTROL MODULE MTR SPD CTRL ORG/ WIRE PNK 6 7 WIRE PNK WIRE PPL PPL/WHT WIRE R AIR TMP SENS SIG MODE CTRL BLOWER MOTOR CONTROL SWITCH REAR DEFOG TEMP SENS GROUND REAR DFG RECIR RECIR CTRL R AIR TMP LOW REF LOW REF RED WIRE RED/BLK WIRE RED/WHT WIRE RER DEF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RUN/ CRNK RELAY TAN WIRE TEMPERATURE CONTROL SWITCH UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 4 10 5 7 RETRACT CTRL EXTEND CTRL SENS SIG LOW REF SENS SIG 2 6 1 7 3 9 4 POSITION CTRL MTR COMM POSITION CTRL SPLY VOLT LOW REF 4 6 B+ GND 9 2 12 SERIAL DATA PNK WIRE AUTOMATIC DAY/NIGHT MIRROR BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM ELECTROCHROMIC DDM FUSE 4 DEFOGGER SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOWN L/R SELECT DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER MEMORY/HEATED SEAT SWITCH DRIVER OUTSIDE REARVIEW MIRROR EXIT EXTEND GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, L/R SELECT SW PWR LEFT LOGIC LT BLU WIRE LT BLU/WHT WIRE MIRROR CIRCUIT ORG/ WIRE ORG/BLK WIRE OUTSIDE REARVIEW MIRROR SWITCH PNK WIRE RED/WHT WIRE RETRACT RIGHT SERIAL DATA SW SIG LOGIC WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 B+ 1 2 3 4 5 6 7 8 PPL RR SNS SIG RR SNS SIG LR SNS SIG SUPPLY LR SNS SIG 2378 2377 2376 2374 2375 PPL 5060 2751 2555 COMPUTER DATA LINES SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE DK BLU WIRE DK GRN WIRE GMLAN GND DISABLE SIG GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P MULTI-FUNCTION SWITCH IND DIM LED DISABLE LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR MIDDLE OBJECT SENSOR (LEFT SIDE OF REAR BUMPER) LEFT REAR OBJECT CORNER SENSOR (LEFT CORNER OF REAR BUMPER) LOW REF LT BLU WIRE OBS DET FUSE 20 ORG/ WIRE PPL PPL 5 24 18 8 23 PPL/WHT WIRE REAR OBJECT SENSOR CONTROL MODULE (AT REAR CARGO AREA, BEHIND TRIM PANEL) REAR PARK ASSIST DISABLE SWITCH RED WIRE RED/WHT WIRE RIGHT REAR CORNER OBJECT SENSOR (RIGHT CORNER OF REAR BUMPER) RIGHT REAR MIDDLE OBJECT SENSOR (RIGHT SIDE OF REAR BUMPER) W/O SPO HEATED SEATS W/ SPO HEATED SEATS WHT WIRE YEL WIRE