GMC Sierra III facelift (2015-2018) blu/yel Wiring diagrams

5 VOLT REF 6.0L AUTO OFF BATT POSITIVE VOLT BCM 4 FUSE BCM 6 FUSE BCM 7 FUSE BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BPP SENS LO REF BPP SENS SIG BRAKE PEDAL POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO LAMP SWITCH SIGNAL COIL SPLY VOLT COMPUTER DATA LINES SYSTEM DK BLU WIRE ENGINE CONTROL MODULE GMLAN DATA - (1) GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE HAZARD SW HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SWITCH HEAD PARK HEADLAMP SW PARK LAMP SIG HEADLAMP SWITCH HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LAMP RELAY CONTROL LAMP SPLY VOLT LEFT DETECTION SIG LEFT LICENSE PLATE LAMP LICENSE PLATE LAMP LT GRN/YEL WIRE PARK LAMP RELAY CONTROL PUDDLE LAMP SPLY VOLT RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/LT GRN WIRE RED/WHT WIRE RIGHT DETECTION SIG RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP SENSOR LO REF SER DATA (-) (1) STOP LAMP SW SIGNAL VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ REAR BUMPER W/O REAR BUMPER BASE EQUIPMENT EXCEPT BASE EQUIPMENT W/O REAR BUMPER WHT WIRE WHT/GRN WIRE YEL/BLK WIRE YEL/BLU WIRE

ASSIST STEP CONTROL MODULE BATT POS VOLT BLK WIRE BLU WIRE BLU/YEL WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DISABLE SIG DK GRN WIRE DRIVER INFORMATION CENTER DISPLAY ELC RNG BDS FUSE GRN WIRE GRN/RED WIRE GRY WIRE GRY/GRN WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL MULTIFUNCTION SWITCH LEFT ASSIST STEP LEFT ASSIST STEP KICK SWITCH LH 5 VOLT REF LH LO REF LH SIG (-) LO REF LO SPEED GMLAN SERIAL DATA LOGIC LOW SPEED SERIAL DATA 2 MTR LH CTRL EXTEND MTR LH CTRL RETRACT MTR RH CTRL EXTEND MTR RH CTRL RETRACT NCA WIRE RED/YEL WIRE RH 5 VOLT REF RH LO REF RH SIG (-) RIGHT ASSIST STEP RIGHT ASSIST STEP KICK SWITCH SW SIG LH SW SIG RH UNDERHOOD FUSE BLOCK VIO WIRE VIO/RED WIRE WHT/BRN WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE

2 HI IND CTRL 4 HI IND CTRL 4 LO IND CTRL 5 VOLT REF ACC WAKEUP SERIAL DATA ACCY/ RUN CRNK FUSE BATT + BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER INFORMATION CENTER ASSEMBLY FRONT AXLE ENGAGEMENT ACTUATOR FT AXLE ACTUATOR CTRL GMLAN SERIAL DATA - 1 GRN/BLK WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INCREMENTAL ENCDR SENS RTN INCREMENTAL ENCDR SENS SPLY INCRMT ENCODER DIR SIG INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK J102 (6.6L TURBO DIESEL) J123 (6.6L TURBO DIESEL) J124 (6.0L) LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPD GMLAN SERIAL DATA 2 MTR CLOCKWISE CTRL MTR COUNTER CLOCKWISE CTRL NEUTRAL IND CTRL RED/GRY WIRE ROTARY POS IMPULSE SIG RUN/CRANK IGN 1 VOLT TRANS IGN FUSE TRANSFER CASE CONTROL MODULE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

2 HI 4 HI 2-HI IND 4 LO 4-HI IND 4-LO IND BCM 2 FUSE BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE GRN/BLK WIRE GRY/RED WIRE HOT AT ALL TIMES IGN 3 ILL NEUTRAL IND POWER DISTRIBUTION SYSTEM RED/BRN WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA (-) (1) TRANSFER CASE MOTOR TRANSFER CASE SHIFT CONTROL SWITCH VIO WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/GRY WIRE YEL/VIO WIRE

2 HI IND CTRL 4 HI IND CTRL 4 LO IND CTRL ACCY WAKEUP SERIAL DATA ACCY/ RUN CRNK FUSE AWD IND CTRL BATT + BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVE SW SIG DRIVER INFORMATION CENTER ASSEMBLY FRONT AXLE ACT CTRL FRONT AXLE ENGAGEMENT ACTUATOR FT AXLE ACTUATOR CTRL GEAR POSITION SENSOR GMLAN SERIAL DATA - 1 GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/RED WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INCREMENTAL ENCDR SENS RTN INCREMENTAL ENCDR SENS SPLY INCRMT ENCODER DIR SIG INSTRUMENT CLUSTER INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC MTR CLOCKWISE CTRL MTR COUNTER CLOCKWISE CTRL NEUTRAL IND CTRL POWER DISTRIBUTION SYSTEM RED/GRY WIRE ROTARY POS IMPULSE SIG ROTARY POS SENS RTN ROTARY POS SENS SIG RUN/CRANK IGN 1 VOLT SERIAL DATA (-) (1) TRANS IGN FUSE TRANSFER CASE CONTROL MODULE TRANSFER CASE LOCK SOL CTRL UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/WHT WIRE VIO/YEL WIRE WHEEL LOCK IND WHT WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/VIO WIRE YEL/WHT WIRE

2 HI 2-HI IND 4 HI 4-HI IND 4-LO IND AUTO BLK WIRE BLU/GRY WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM CTRL DATA 1 (+) DK BLU WIRE GRN/BLK WIRE GRY/GRN WIRE GRY/RED WIRE IGN 3 ILL IND DIMMER NEUT 4 LO NEUTRAL IND POWER DISTRIBUTION SYSTEM RED/GRY WIRE SERIAL TRANSFER CASE MOTOR TRANSFER CASE SHIFT CONTROL SWITCH VIO WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/VIO WIRE

A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENS SIG A/C REFRIGERANT PRESSURE SENSOR ACCELERATOR PEDAL POSITION SENSOR ACCESSORY WAKEUP SERIAL DATA AIR CONDITIONING SYSTEM AMBIENT AIR TEMP SENS SIG APP LOW REF 1 APP LOW REF 2 APP SENS SIG (2) APP SENS SIG 1 BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE APPLY SENS SIG BRAKE APPLY SENS SPLY VOLT BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CHECK ENGINE INDICATOR CTRL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG DATA OUT SIG DK BLU WIRE DK BLU/WHT WIRE DOOR LOCKS SYSTEM ENGINE CONTROL MODULE EVAP CANISTER VENT SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID VALVE FOUR WHEEL DRIVE LOW SIG FOUR WHEEL DRIVE WHEEL LOCK IND FUEL LEVEL SENS SIG FUEL LINE PRESSURE SENS LOW REF FUEL LINE PRESSURE SENS SIG FUEL RAIL PRESSURE SENS SIG FUEL TANK PRESSURE SENS SIG FUEL TANK PRESSURE SENSOR FUEL TEMP/COMPOSITION SIG FUSED SPLY 3 BRAKE APPLY SENS LOW REF GMLAN SERIAL DATA (-) 3 GMLAN SERIAL DATA - 1 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE HIGH SPD COOLING FAN RELAY CTRL HOOD OPEN SW SIG LT GRN WIRE LT GRN/WHT WIRE POWERTRAIN RELAY COIL CTRL PRESSURE SENS LOW REF PRESSURE SENS SIG RED/BRN WIRE RED/LT GRN WIRE RELAY FUSED SPLY 1 RELAY FUSED SPLY 2 RUN/CRANK IGNITION 1 VOLT SENS LOW REF STARTER ENABLE RELAY CTRL STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/WHT WIRE

AMBIENT AIR TEMPERATURE SENSOR BATTERY FUSE BLOCK BLK/BLU WIRE BLK/BRN WIRE BLK/LT GRN WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR BRN/RED WIRE BRN/WHT WIRE CHK ENG COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE OIL PRESSURE IND FUEL GAUGE IND FUEL LEVEL SENSOR FUEL PUMP, LEVEL SENSOR ASSEMBLY FUSE 2 GMLAN GRN/VIO WIRE GRY WIRE GRY/GRN WIRE HOT AT ALL TIMES IND CTR INSTRUMENT CLUSTER LO SPD LOGIC MALFUNCTION IND LAMP (MIL) NCA WIRE PRIMARY FUEL PUMP, RED/BRN WIRE RED/GRN WIRE RED/LT GRN WIRE VIO/DK BLU WIRE VIO/GRN WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

A/C COMPRESSOR CLUTCH RELAY CTRL A/C REFRIGERANT PRESSURE SENS SIG A/C REFRIGERANT PRESSURE SENSOR ACCELERATOR PEDAL POSITION SENSOR ACCESSORY WAKEUP SERIAL DATA AIR CONDITIONING SYSTEM AMBIENT AIR TEMP SENS SIG APP LOW REF 1 APP LOW REF 2 APP SENS SIG (2) APP SENS SIG 1 BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE APPLY SENS SIG BRAKE APPLY SENS SPLY VOLT BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE CHECK ENGINE INDICATOR CTRL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG DATA OUT SIG DK BLU WIRE DK BLU/WHT WIRE DOOR LOCKS SYSTEM ENGINE CONTROL MODULE EVAP CANISTER VENT SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID VALVE FOUR WHEEL DRIVE LOW SIG FOUR WHEEL DRIVE WHEEL LOCK IND FUEL LEVEL SENS SIG FUEL LINE PRESSURE SENS LOW REF FUEL LINE PRESSURE SENS SIG FUEL RAIL PRESSURE SENS SIG FUEL TANK PRESSURE SENS SIG FUEL TANK PRESSURE SENSOR FUEL TEMP/COMPOSITION SIG FUSED SPLY 3 BRAKE APPLY SENS LOW REF GMLAN SERIAL DATA (-) 3 GMLAN SERIAL DATA - 1 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE HIGH SPD COOLING FAN RELAY CTRL HOOD OPEN SW SIG LT GRN WIRE LT GRN/WHT WIRE POWERTRAIN RELAY COIL CTRL PRESSURE SENS LOW REF PRESSURE SENS SIG RED/BRN WIRE RED/LT GRN WIRE RELAY FUSED SPLY 1 RELAY FUSED SPLY 2 RUN/CRANK IGNITION 1 VOLT SENS LOW REF STARTER ENABLE RELAY CTRL STARTING/CHARGING SYSTEM TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO/DK BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/WHT WIRE

AMBIENT AIR TEMPERATURE SENSOR BATTERY FUSE BLOCK BLK/BLU WIRE BLK/BRN WIRE BLK/LT GRN WIRE BLK/YEL WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR BRN/RED WIRE BRN/WHT WIRE CHK ENG COMPUTER DATA LINES SYSTEM DK BLU/GRY WIRE DK BLU/WHT WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE OIL PRESSURE IND FUEL GAUGE IND FUEL LEVEL SENSOR FUEL PUMP, LEVEL SENSOR ASSEMBLY FUSE 2 GMLAN GRN/VIO WIRE GRY WIRE GRY/GRN WIRE HOT AT ALL TIMES IND CTR INSTRUMENT CLUSTER LO SPD LOGIC MALFUNCTION IND LAMP (MIL) NCA WIRE PRIMARY FUEL PUMP, RED/BRN WIRE RED/GRN WIRE RED/LT GRN WIRE VIO/DK BLU WIRE VIO/GRN WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE