GMC Sierra IV (2018-2022) org/ Wiring diagrams

BATTERY POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE MODULATOR BRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (BEHIND UNDERHOOD FUSE BLOCK) GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES LEFT FRONT WHEEL SPEED SENSOR LEFT PARK BRAKE ACTUATOR LEFT REAR BRAKE PAD WEAR SENSOR LF WHEEL SPD SENS CTRL LF WHEEL SPD SENS SIG LR PARK BRAKE MOTOR APPLY CTRL LR PARK BRAKE MOTOR LOW REF LR WHEEL SPD SENS CTRL LR WHEEL SPD SENS SIG NCA WIRE ORG/ WIRE PARK BRAKE APPLY SW SIG PARK BRAKE APPLY SW VOLT REF PARK BRAKE CONTROL SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PARK BRAKE REL SW SIG PARK BRAKE REL SW VOLT REF PARK BRAKE SW SIG PARK BRAKE SW SPLY VOLT RED/VIO WIRE RED/YEL WIRE RF WHEEL SPD SENS CTRL RF WHEEL SPD SENS SIG RIGHT PARK BRAKE ACTUATOR RR PARK BRAKE MOTOR APPLY CTRL RR PARK BRAKE MOTOR LOW REF GND RR WHEEL SPD SENS CTRL RR WHEEL SPD SENS SIG SERIAL DATA COMM ENABLE TAN WIRE TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK VEHICLE SPEED SIGNAL 4 VEHICLE STABILITY CONTROL SWITCH WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

6.6L (VIN 7) 6.6L VIN Y TURBO DIESEL ABS IND. BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRAKE IND BRAKE PEDAL POSITION SENSOR (BEHIND BRAKE PEDAL ASSEMBLY) BRAKE POSITION SENS LOW REF BRAKE POSITION SENS SIG COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GRN/BRN WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (-) (1) HILL DESCENT CONTROL SWITCH HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER LEFT FRONT BRAKE PAD WEAR SENSOR LEFT REAR WHEEL SPEED SENSOR LOGIC LOW SPD GMLAN SER DATA NCA WIRE ORG/ WIRE RIGHT FRONT WHEEL SPEED SENSOR RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT REAR WHEEL SPEED SENSOR RUN/CRANK IGN 1 VOLT 16 SERIAL DATA (-) (1) STEERING WHEEL ANGLE SENSOR TAN WIRE TCS IND TCS OFF IND TRACTION CONTROL SW SIG 1 VIO/BLK WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BLK/BRN WIRE BLK/GRY WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BRN/WHT WIRE BRN/YEL WIRE GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE NCA WIRE ORG/ WIRE TRANSMISSION CONTROL SOLENOID VALVE 1 TRANSMISSION CONTROL SOLENOID VALVE 2 TRANSMISSION CONTROL SOLENOID VALVE 3 TRANSMISSION CONTROL SOLENOID VALVE 4 TRANSMISSION CONTROL SOLENOID VALVE 5 TRANSMISSION CONTROL SOLENOID VALVE 6 TRANSMISSION CONTROL SOLENOID VALVE 9 TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SPEED SENSOR 1 TRANSMISSION INTERMEDIATE SPEED SENSOR 2 TRANSMISSION OUTPUT SHAFT SPEED SENSOR TRANSMISSION RANGE SENSOR VIO WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/ORG WIRE YEL/VIO WIRE

10 SPEED A/T 5.3L 2.7L TURBO 8 SPEED A/T AUTOMATIC TRANSMISSION ASSEMBLY (10 SPEED A/T) AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED A/T) AUTOMATIC TRANSMISSION ASSEMBLY (8 SPEED A/T) BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLU WIRE BLU/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENG CTRL ENG CTRL VEH ENGINE CONTROL MODULE ENGINE CONTROL MODULE (4.3L) GMLAN SERIAL DATA BUS (-) 1 GRN WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN SER DATA (+) 1 IGN MODE SW MODE CTRL IGN MODE SW MODE CTRL BACKUP INT MODE SW MODE CTRL Y NCA WIRE ORG/ WIRE RED WIRE TRAILER CONNECTOR TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/NEUTRAL SIG 1 TRANSMISSION RANGE SENSOR VIO/BLU WIRE W/ SPECIAL EQUIPMENT WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/GRY WIRE

6.6L DIESEL AUXILIARY BATTERY AUXILIARY BATTERY FUSE BLOCK AUXILIARY GENERATOR BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BATTERY POSITIVE VOLTAGE BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN WIRE CHARGE IND CTRL CHARGE INDICATOR COMPUTER DATA LINES SYSTEM CURRENT SENSOR LOW REF CURRENT SENSOR SIG DRIVER INFORMATION CENTER DISPLAY DUTY CYCLE SIG ENGINE CONTROL MODULE GENERATOR GRN WIRE GROUND CURRENT SENSOR VOLT REF GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED J112 (6.6L DIESEL) J158 (6.6L) LOGIC INSTRUMENT CLUSTER LOW SPEED GMLAN SERIAL DATA ORG/ WIRE RED WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGN 1 VOLT SERIAL DATA (-) 7 SNOW PLOW FUSE BLOCK (IF EQUIPPED) (RIGHT FRONT OF ENGINE COMPT) SNOW PLOW FUSE HOLDER SNOW PLOW RELAY UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRN WIRE W/ SNOW PLOW PROVISIONS W/O SNOW PLOW PROVISIONS WHT WIRE WHT/YEL WIRE YEL WIRE

BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/WHT WIRE COAX DEFOGGER SYSTEM GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY WIRE LOGIC MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM ORG/ WIRE ORG/WHT WIRE PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR CARGO LAMP PASSENGER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR PASSENGER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER OUTSIDE REAR VIEW MIRROR LOWER EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR PNK WIRE RED/BLU WIRE RIGHT MIDDLE SIDE MARKER LAMP RIGHT SIDE VIEW CAMERA RIGHT TURN SIGNAL REPEATER LAMP VIO/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

ASSIST STEP CONTROL MODULE BATT POS VOLT BLK WIRE BLK/BLU WIRE BLU WIRE BLU/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/RED WIRE GRY WIRE HOT AT ALL TIMES LEFT ASSIST STEP LEFT ASSIST STEP KICK SWITCH LH RUNNING BOARD KICK SW SIG LH RUNNING BOARDS MTR LH RUNNING BOARDS MTR CTRL EXTEND LH RUNNING BOARDS MTR CTRL RETRACT LH RUNNING BOARDS MTR HALL SENS LOW REF LH RUNNING BOARDS MTR HALL SENS SIG LO SPD GMLAN SERIAL DATA NCA WIRE ORG/ WIRE ORG/WHT WIRE RED WIRE RED/YEL WIRE RH RUNNING BOARD KICK SW SIG RH RUNNING BOARDS MTR RH RUNNING BOARDS MTR CTRL EXTEND RH RUNNING BOARDS MTR CTRL RETRACT RH RUNNING BOARDS MTR HALL SENS SIG RIGHT ASSIST STEP RIGHT ASSIST STEP KICK SWITCH RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH RUNNING BOARDS DISABLE SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/RED WIRE WHT WIRE WHT/BRN WIRE YEL WIRE YEL/BLK WIRE YEL/BRN WIRE YEL/WHT WIRE

1/+ 10 SPEED A/T 6.6L (VIN 7) 6.6L VIN Y AUTOMATIC TRANSMISSION ASSEMBLY (10 SPEED A/T) BATT POS VOLT 28 LO SPD GMLAN SERIAL DATA 2 BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BRK POS SENS LOW REF BRK POS SENS SIG BUS - COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE IND DATA DATA BUS 1 DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GND BATT POS VOLT 4 GRN/YEL WIRE GRY WIRE GRY/GRN WIRE HI SPD HI SPEED GMLAN SERIAL HI SPEED GMLAN SERIAL DATA BUS (-) 1 HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES IGN MODE SW CTRL BACKUP IGN MODE SW MODE CTRL INSTRUMENT CLUSTER INTERNAL MOD SW VOLT SUPPLY A J108 (6.6L VIN 7) LOGIC NCA WIRE ORG/ WIRE RED/BRN WIRE RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SW FEEDBACK SIGNAL TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIGNAL 1 TRANSMISSION RANGE SENSOR UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE

AIR BAG IND AIR BAG OFF IND AIR BAG ON IND BATT POS VOLT PASS SEAT BELT IND BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/ORG WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY FRONT OVERHEAD CONSOLE ASSEMBLY GRN WIRE GRY WIRE GRY/GRN WIRE GRY/ORG WIRE HI SPD GMLAN (-) 2 INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA MOD STAGE 1 HI MOD STAGE 1 LO MOD STAGE 2 HI MOD STAGE 2 LO ORG/ WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/WHT WIRE PASS AIR BAG OFF IND PASS AIR BAG ON IND PASS MOD SW RET PASS MOD SW SIG PASS STAGE 1 HI PASS STAGE 1 LO PASS STAGE 2 HI PASS STAGE 2 LO PASSENGER INSTRUMENT PANEL AIR BAG RED/GRN WIRE SD COMM ENABLE SEAT BELT IND SERIAL DATA SHORTING BAR STEERING WHEEL AIR BAG COIL VIO WIRE VIO/WHT WIRE W/ ROLL OVER SENSING SWITCH WHT WIRE WHT/BLU WIRE WHT/ORG WIRE YEL WIRE YEL/ORG WIRE

AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLOCK ENGINE COOLANT FLOW CONTROL VALVE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE DFI HI VOLT CTRL CYL 1 DFI HI VOLT CTRL CYL 2 DFI HI VOLT CTRL CYL 5 DFI HI VOLT CTRL CYL 6 DIESEL PARTICULATE FILTER EXHAUST DIFFERENTIAL PRESSURE SENSOR EGR TEMP SENS 3 SIG ENGINE BLOCK TEMP SENS SIG ENGINE CONTROL MODULE ENGINE COOLANT BYPASS VALVE ENGINE COOLANT FLOW CONTROL VALVE ENGINE COOLANT TEMPERATURE SENSOR 4 ENGINE OIL PRESSURE SENSOR EXHAUST GAS TEMP SENS 1 SIG EXHAUST GAS TEMP SENS 3 LOW REF EXHAUST GAS TEMP SENS 3 SIG EXHAUST TEMP SENS 2 LOW REF EXHAUST TEMP SENS 2 SIG EXHAUST TEMPERATURE SENSOR 2 EXHAUST TEMPERATURE SENSOR 3 FRP SENS 2 SIG FRP SENS SIG FUEL RAIL PRESSURE SENSOR GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE INTAKE MANIFOLD TUNING SOLENOID VALVE LOGIC MAIN ENGINE COOLANT FLOW CONTROL VALVE MAP SENS SIG NCA WIRE ORG/ WIRE RED/VIO WIRE RED/WHT WIRE THROTTLE ACT CLOSE CTRL THROTTLE ACT OPEN CTRL TRANSMISSION RANGE SENSOR AUTOMATIC TRANSMISSION ASSEMBLY VAR SWIRL VLV CLOSE CTRL VAR SWIRL VLV OPEN CTRL VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE