GMC Sierra IV (2018-2022) blk 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

AC POWER OUTLET ENABLE AC POWER OUTLET SW SIG/ ALL WINDOWS OPEN SW SIG AIR CONDITIONING SYSTEM AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM AUTO STOP START IND CTRL AUTO STOP START SWITCH SIG BACKUP LAMP RLY CTRL BATT POSITIVE VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRN WIRE BRN/BLK WIRE BRN/VIO WIRE BRN/WHT WIRE CARGO LAMP SW SIG COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS LOW REF DOOR LOCKS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, SHIFT INTERLOCK SYSTEMS EXTERIOR LIGHTS, ANTI-LOCK BRAKES, CRUISE CONTROL, SHIFT INTERLOCK SYSTEMS EXTERIOR LIGHTS, CRUISE CONTROL, SHIFT INTERLOCK SYSTEMS FOG LAMP RLY CTRL GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HAZARD SW SIG HEADLAMP SW ON SIG HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HEADLIGHTS, EXTERIOR LIGHTS SYSTEMS HEADLIGHTS, INTERIOR LIGHTS SYSTEMS HORN RLY CTRL AC POWER OUTLET STATUS INDICATOR CTRL HORNS SYSTEM HOT AT ALL TIMES IGN MODE SW ACCESSORY LED SIG IGN MODE SW MODE VOLTAGE IGN MODE SW START LED SIG INDICATOR DIMMING CTRL INTERIOR LAMP CTRL INTERIOR LAMP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 2 LEFT HEADLAMP RELAY CTRL LEFT MINOR ENDGATE AJAR SIG LEFT TRAILER TURN SIG LAMP CTRL LIGHTING CTRL SWITCH REF LIGHTING CTRL SWITCH SIG LOW SPEED GMLAN SERIAL DATA MAJOR ENDGATE HIGH RELAY CTRL MAJOR ENDGATE LOW RELAY CTRL NETWORK BUS 4 OUT OF PARK SIG PARK LAMP RLY CTRL POWER DISTRIBUTION SYSTEM POWER WINDOWS SYSTEM RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR CTRL REMOTE FUNCTION ACTR LO REF REMOTE FUNCTION ACTR TRANSMIT SIG RIGHT FRONT DRL CTRL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT MINOR ENDGATE AJAR SIG RIGHT TRAILER TURN SIG LAMP CTRL HEADLAMP HIGH BEAM RLY CTRL RUN IGNITION 3 VOLT DOME LAMP OFF INDICATOR CTRL SECURITY INDICATOR CTRL SERIAL DATA (+) (1) REMOTE FUNC ACTR RECEIVE SIG SERIAL DATA (-) (1) STARTING/CHARGING SYSTEM STEERING COLUMN LOCK STATUS SIG STOP/TURN LAMP CTRL SW HEADLAMPS OFF SIG CTRL TASK LAMP SW SIG TRACTION CTRL SW SIG 1 TRAILER BRAKE APPLY SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM TURN SIGNAL LAMP CTRL VIO/BRN WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/VIO WIRE WIPER SW HIGH SIG WIPER/WASHER SYSTEM POWER DISTRIBUTION SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ANTI-LOCK BRAKES SYSTEM EXTERIOR LIGHTS SYSTEM BLK WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CARGO BED LAMP CTRL COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG DOOR LOCK ACTUATOR LOCK CTRL DOOR LOCK ACTUATOR LOCK CTRL 2 DOOR LOCK ACTUATOR UNLOCK CTRL DOOR LOCK KEY SW UNLOCK SIG DOOR LOCKS SYSTEM DOOR LOCKS, EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS DRIVER DOOR LOCK SW LOCK SIG DRIVER DOOR LOCK SW UNLOCK SIG GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE HI SPEED GMLAN SER DATA (-) 1 INADVERTENT POWER CTRL LED AMBIENT LIGHTING CTRL 1 LED BACKLIGHT DIMMING CTRL LEFT TAIL LAMP OUTAGE DETECTION SIG LF DOOR AJAR SW SIG FRONT TURN LAMP FEEDBACK SIG LOCAL INTERCONNECT NETWORK BUS SERIAL DATA 3 LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 1 LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 2 MAJOR ENDGATE RELEASE SW SIG EXTERIOR MAJOR ENDGATE RELEASE SW SIG INTERIOR MINOR ENDGATE HIGH RELAY CTRL MINOR ENDGATE LOW RELAY CTRL MINOR ENDGATE RELEASE SW DISCRETE SIG EXTERIOR PASSENGER DOOR LOCK SW LOCK CTRL PASSENGER DOOR LOCK SW UNLOCK CTRL POWER DISTRIBUTION SYSTEM PUDDLE LAMP CTRL RF TURN LAMP FEEDBACK SIG RF DOOR AJAR SW SIG RIGHT TAIL LAMP OUTAGE DETECTION SIG SHIFT INTERLOCK SOLENOID CTRL SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS SHIFT SELECT SW PARK SI SHIFT SELECT SW PERFORMANCE SIG 16 17 TRAILER BRAKE APPLY SIG STANDING LAMP RLY CTRL SURVEILLANCE SW SIG TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE WHT/VIO WIRE WHT/YEL WIRE WIRELESS CHARGING SYSTEM FAULT INDICATOR CTRL YEL WIRE YEL/BLK WIRE YEL/VIO WIRE YEL/WHT WIRE

AUTOMATIC TRANSMISSION ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED A/T) BLK WIRE BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE IND DRIVER INFORMATION CENTER DISPLAY GRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) INPUT SPD SIG INSTRUMENT CLUSTER LO SPD GMLAN SERIAL DATA LOGIC NCA WIRE OUTPUT SPD SIG RED WIRE TRANS I/P SPEED SENS SIG TRANS INTERMEDIATE SPD SIG TRANSMISSION CONTROL MODULE TRANSMISSION CONTROL MODULE (10 SPEED A/T) (BEHIND LEFT CORNER OF THE RADIATOR) TRANSMISSION CONTROL MODULE (8 SPEED A/T) (BEHIND LEFT CORNER OF THE RADIATOR) TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SPEED SENSOR 1 TRANSMISSION INTERMEDIATE SPEED SENSOR 2 TRANSMISSION OUTPUT SHAFT SPEED SENSOR VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/ORG WIRE

BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR FORWARD CTRL FRT VERT MOTOR DOWN CTRL FRT VERT MOTOR UP CTRL GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE LIN BUS 1 LOW SPD GMLAN MOTOR FORWARD CTRL MOTOR REARWARD CTRL NCA WIRE REARWARD CTRL RR VERT MOTOR DOWN CTRL RR VERT MOTOR UP CTRL SEAT MEMORY CONTROL MODULE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

B+ VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE COMBINED VEHICLE INERTIAL SENSOR SUPPLY VOLT COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE GRN WIRE GRN/BRN WIRE GROUND GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PRESSURE SENSOR LOGIC LOW REF LOW SPD GMLAN SERIAL DATA 2 POWER STEERING CONTROL MODULE (ON POWER STEERING RACK ASSEMBLY) POWER STEERING PRESSURE SENSOR RED WIRE RED/WHT WIRE RIGHT PRESSURE SENSOR SERIAL DATA COMMUNICATION ENABLE SIGNAL GROUND STEERING SOL CONTROL STEERING SOL LOW REF STEERING WHEEL ANGLE SENSOR UNDERHOOD FUSE BLOCK VARIABLE POWER STEERING SOLENOID VALVE WHT WIRE WHT/BLU WIRE

BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BRN/BLK WIRE BRN/YEL WIRE COAX COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOWN DRIVER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR DRIVER OUTSIDE REAR VIEW MIRROR FORWARD EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR LOWER EXTERIOR FLOOD LAMP DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER REAR OUT SIDE REAR VIEW MIRROR CARGO LAMP DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW/OUTSIDE REAR VIEW MIRROR SWITCH GRN/WHT WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE LEFT LEFT MIDDLE SIDE MARKER LAMP LEFT SIDE VIEW CAMERA LEFT TURN SIGNAL REPEATER LAMP LOGIC MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM RED/VIO WIRE RIGHT RWD VIO/BLU WIRE VIO/GRY WIRE VIO/RED WIRE W/ AUXILIARY CARGO, CLEAR LAMPS W/ LIGHT SENSITIVE REAR VIEW MIRROR W/O AUXILIARY CARGO, CLEAR LAMPS W/O LIGHT SENSITIVE REAR VIEW MIRROR WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/YEL WIRE COAX COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DOWN DRIVER SEAT MEMORY SWITCH EXIT GRN WIRE GRN/BLK WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES LEFT LOGIC LOW REF NAVIGATION SYSTEM NETWORK BUS 8 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 PASSENGER WINDOW SWITCH POSITIVE VOLT RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT MIDDLE SIDE MARKER LAMP RIGHT SIDE VIEW CAMERA RIGHT TURN SIGNAL REPEATER LAMP RWD SEAT MEMORY CONTROL MODULE SET SIG SET- SWITCH SIG 1 VIO/WHT WIRE W/ AUXILIARY CARGO, CLEAR LAMPS W/ LIGHT SENSITIVE REAR VIEW MIRROR W/O AUXILIARY CARGO, CLEAR LAMPS W/O LIGHT SENSITIVE REAR VIEW MIRROR WHT WIRE WHT/VIO WIRE YEL WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

ACCESSORY WAKE UP SERIAL DATA AUXILIARY CHASSIS CONTROL MODULE BATT POS VOLT BATTERY POSITIVE VOLTAGE HIGH SPEED GMLAN SERIAL DATA (+) 1 BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) CHASSIS CONTROL MODULE LIN BUS 1 COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEMS GRN/BLU WIRE GRN/VIO WIRE GROUND GROUND 17 HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LOCAL INTERCONNECT N/W BUS 33 RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGNITION 1 VOLTAGE 4 TRAILER AUXILIARY CTRL TRAILER BRAKE APPLY SIGNAL TRAILER BRAKE CONTROL SWITCH TRAILER BRAKE CTRL SIG TRAILER BRAKE ENABLE SIG TRAILER BRAKE ENABLE SIGNAL TRAILER BRAKE POWER CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE YEL/BLK WIRE