GMC Sierra IV (2018-2022) vio/blk Wiring diagrams

BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE DATA COMM ENABLE ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) ETHERNET BUS 7 (-) GRN WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HIGH SPEED EXTENSION BUS 2 TERMINATING RESISTOR HOT W/ IGNITION MAIN RELAY ENERGIZED LO SPD SER DATA 2 LOW LEVEL MID/HIGH LEVEL RADIO RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGNITION 1 VOLTAGE SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE TRAILER TIRE PRESSURE INDICATOR MODULE VIO/BLK WIRE W/ ONSTAR W/O ONSTAR WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

12 VOLT REFERENCE ACCESSORY VOLT ACCESSORY WAKEUP SER DATA ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM BATT POSITIVE VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CARGO LAMP CONTROL COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM WIPER/WASHER SYSTEM CTRL SW SIG CURRENT SENS CTRL CURRENT SENS SIG DIMMER SW HIGH BEAM SIG DOOR LOCK ACTUATOR DOOR LOCK CTRL DOOR LOCK CTRL 2 DOOR LOCK KEY SW UNLOCK SIG DOOR LOCK SW LOCK SIG DOOR LOCK SW UNLOCK SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT, INTERIOR LIGHTS SYSTEMS ELECTRONIC MUFFLERS SYSTEM ENDGATE HIGH RELAY CTRL EXHAUST BRAKE SW INDICATOR EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS GAP UP/DOWN SW SIG GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GROUND 23 GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/VIO WIRE HAZARD SW LEFT TURN SIG HAZARD SWITCH RIGHT TURN SIG HDLP SW FLASH TO PASS SIG HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM HORNS SYSTEM HI SPEED GMLAN SER DATA (-) 1 HIGH BEAM AUTO ON/OFF SW SIG HOOD STATUS B SIG HORN SW SIG HOT AT ALL TIMES IGNITION KEY RESISTOR SIG IGNITION MODE SW IGNITION SWITCH IMMOBILIZER CTRL IMMOBILIZER LOW REF INADVERTENT POWER CTRL KEY-IN IGNITION SWITCH LED AMBIENT LIGHTING CTRL LED BACK LT DIMMING CTRL LF DOOR AJAR SW SIG LF DRL CTRL LH HDLMP LOW BEAM CTRL LH TAIL LAMP FEEDBACK SIG LIN BUS 1 LIN BUS 2 LIN BUS 3 LIN BUS 5 LOCK CTRL LOCK SOLENOID ACTUATOR CTRL LOW REFERENCE MAJOR ENDGATE RELEASE SW MINOR ENDGATE LOW RELAY MINOR ENDGATE RELEASE SW MIRR CARGO LAMP CTRL OFF OFF/RUN/CRANK VOLT POWER DISTRIBUTION SYSTEM PUDDLE LAMP CONTROL PUDDLE LAMP CTRL RAP RELAY COIL CTRL REAR LICENSE LP CTRL RED/YEL WIRE RF DOOR AJAR SW SIG RF TURN SIG LP CTRL RH DETECTION SIG RH HDLMP LOW BEAM CTRL RR TURN SIG LP CTRL RUN WIRE RUN/CRANK IGNITION 1 VOLT RUN/CRANK RELAY COIL CTRL SERIAL DATA COMM ENABLE SET/COAST/RESUME/ ACCELERATE SW SIG SHIFT INTERLOCK SOLENOID CTRL SHIFT INTERLOCK SYSTEM SHIFT INTERLOCK, MEMORY SYSTEMS SHIFT SELECT SW PARK SIG SHIFT SELECT SW SIG 16 17 TRAILER BRAKE APPLY SIG STANDING LAMP RLY CTRL STARTING/CHARGING SYSTEM STOP LP RLY COIL CTRL SURVEILLANCE SW SIG TAP UP/TAP DOWN SW SIG TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM UNLOCK CTRL VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW LOW SIG WIPER MTR PARK SW SIG WIPER RELAY COIL CTRL WIPER SW HIGH SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM POWER DISTRIBUTION SYSTEM WIRELESS CHARGER YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/VIO WIRE BRN/WHT WIRE CHEVROLET FRONT FOG LAMP RELAY GMC GRN/BRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLU WIRE HEADLAMP HIGH BEAM RELAY HEADLAMP RELAY HOT AT ALL TIMES LEFT DAYTIME RUNNING LAMP, LEFT HEADLAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE RED/GRN WIRE RIGHT DAYTIME RUNNING LAMP RIGHT HEADLAMP RIGHT HEADLAMP ASSEMBLY RIGHT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/BLK WIRE W/ LED W/O LED WHT WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

BATT POSITIVE VOLT 45 BLK WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENABLE SIG ENG SHUTDOWN SIG ENGINE CONTROL MODULE GND 4 GRN/WHT WIRE GRY/GRN WIRE HI SPD SER DATA (-) 1 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT INSTRUMENT PANEL FUSE BLOCK POWER DISTRIBUTION SYSTEM POWER TAKE OFF SWITCH DIODE POWER TAKE-OFF AUTOMATIC TRANSMISSION FLUID PRESSURE SENSOR POWER TAKE-OFF CONTROL MODULE POWER TAKE-OFF SHIFT SOLENOID VALVE PRESSURE SENS LOW REF PRESSURE SENS SIG PWR TAKE OFF CTRL SW RED/BLU WIRE RED/VIO WIRE REMOTE THROTTLE SIG RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH RIGHT INSTRUMENT PANEL FUSE BLOCK SER DATA COMM ENABLE SIDE OF TRANSMISSION) SIG PWR SOL CTRL HIGH SOL CTRL LOW SW NORMALLY CLOSED SIG UNDERHOOD FUSE BLOCK UPFIT INTRLK SW SIG 2 VIO/BLK WIRE VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE CAM PHASER W LO REF CAMSHAFT POSI INTAKE SENS LO REF 1 CAMSHAFT POSITION ACTUATOR SOLENOID VALVE CAMSHAFT POSITION SENSOR CRANKSHAFT POSITION SENSOR CRANKSHAFT POSITION SENSOR LO REF CRANKSHAFT POSITION SENSOR VOLTAGE DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 1 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 2 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 3 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 4 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 5 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 6 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 7 DIRECT FUEL INJ (DFI) HI VOLT CTRL CYL 8 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 1 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 2 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 3 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 4 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 5 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 6 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 7 DIRECT FUEL INJ (DFI) HI VOLT SPLY CYL 8 ENGINE CONTROL MODULE ENGINE CONTROL VEHICLE SENSORS LOW REF 1 ENGINE COOLANT TEMPERATURE SENS SIG FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL PRESSURE, TEMPERATURE SENSOR FUEL RAIL PRESSURE SENS SIG GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/WHT WIRE GROUND 4 GRY WIRE GRY/BLU WIRE GRY/RED WIRE HI PRESS FUEL PUMP ACTR HI - CTRL HI PRESSURE FUEL PUMP ACTR LO - CTRL HIGH PRESSURE FUEL PUMP IGNITION CTRL 1 IGNITION CTRL 7 IGNITION CTRL LO REF BANK 1 LOGIC MANIFOLD ABSOLUTE PRESS SENS SIG MANIFOLD ABSOLUTE PRESSURE SENS LO REF OIL TEMPERATURE SENSOR SIGNAL POWERTRAIN MAIN RELAY FUSED SPLY 3 STARTING/ CHARGING SYSTEM THROTTLE POSITION SENS (SENS 1) SIG THROTTLE POSITION SENS LO REF TRANSMISSIONS SYSTEM VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/GRY WIRE YEL/VIO WIRE

ACCESSORY VOLT 4 BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/GRN WIRE BRN/WHT WIRE CHARGE AIR COOLER INLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM GLOW PLUG 1 GLOW PLUG 2 GLOW PLUG 3 GLOW PLUG 4 GLOW PLUG 5 GLOW PLUG 6 GLOW PLUG 7 GLOW PLUG 8 GLOW PLUG CTRL 1 GLOW PLUG CTRL 2 GLOW PLUG CTRL 3 GLOW PLUG CTRL 4 GLOW PLUG CTRL 5 GLOW PLUG CTRL 6 GLOW PLUG CTRL 7 GLOW PLUG CTRL 8 GND 2 GND 5 GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SER DATA - HOT AT ALL TIMES IGN 1 VOLT 21 NOT USED RED/VIO WIRE RED/YEL WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE WAKEUP SER DATA WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/RED WIRE YEL/BLK WIRE YEL/WHT WIRE

BATTERY FUSE BLOCK BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BRN WIRE BRN/WHT WIRE CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM CTRL DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE OIL PRESSURE IND EXHAUST TEMPERATURE SENSOR 1 EXHAUST TEMPERATURE SENSOR 2 EXHAUST TEMPERATURE SENSOR 3 EXHAUST TEMPERATURE SENSOR 4 EXHAUST TEMPERATURE SENSOR 5 FUEL GAUGE IND GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRY/GRN WIRE HOT AT ALL TIMES IND CTRL IND LO SPD GMLAN INSTRUMENT CLUSTER LOGIC LOW CONTROL LOW REFERENCE MALFUNCTION INDICATOR LIGHT RED/VIO WIRE REDUCTANT INJECTOR RELAY CTRL RLY CTRL SHUTDOWN SIGNAL TRANSMISSIONS SYSTEM VALVE HIGH CTRL VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VOLT WAIT TO START IND WHT/GRN WIRE WHT/RED WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/WHT WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM ENGINE CONTROL MODULE FUEL PRESSURE SENSOR FUEL PUMP CTRL FUEL SENSOR SIG GMLAN SERIAL DATA (+) 7 GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/RED WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGNITION 1 VOLTAGE LEVEL SENSOR SIGNAL 2 LOW REF LOW REFERENCE LOW REFERENCE 1 MODE CTRL BACKUP MODULE WAKE-UP SIGNAL PRIMARY RELAY CTRL RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SENSOR 2 SIGNAL SENSOR 4 SIGNAL SENSOR 5 SIGNAL SENSOR LOW REF SENSOR SIGNAL SENSOR SIGNAL 1 SHIELD GROUND SPEED SIGNAL SW FEEDBACK SIG TEMP LOW REFERENCE TEMP SENSOR 1 TEMP SENSOR 2 TEMP SENSOR 3 TEMPERATURE SIGNAL TRANSMISSIONS SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VOLT SIG A VOLTAGE PHASE 2 VOLTAGE PHASE 3 VOLTAGE REF W/ DUAL TANK W/O DUAL TANK WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/WHT WIRE

AUXILIARY CHASSIS CONTROL MODULE BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE DIESEL PARTICULATE FILTER EXHAUST DIFFERENTIAL PRESSURE SENSOR EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 1 EXHAUST GAS RECIRCULATION TEMPERATURE SENSOR 2 FUEL HEATER/WATER IN FUEL SENSOR FUEL PUMP GRN/BLU WIRE GRN/GRY WIRE GRY WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LOGIC NCA WIRE PRIMARY FUEL LEVEL SENSOR PRIMARY FUEL PUMP, FUEL LEVEL SENSOR ASSEMBLY RED/VIO WIRE RED/WHT WIRE TRAILER LIGHTING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/BLU WIRE VIO/GRN WIRE W/ DUAL TANK W/ INTEGRATED TRAILER BRAKE CONTROL W/O DUAL TANK WHT/BRN WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE

AUXILIARY UNDERHOOD FUSE BLOCK BLK/BRN WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE BLU/RED WIRE BLU/WHT WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CLOSE CTRL CRANKSHAFT POSITION SENSOR DUTY CYCLE SIGNAL ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) ENGINE COOLANT TEMPERATURE SENSOR ENGINE OIL PRESSURE SENSOR EXHAUST GAS RECIRCULATION VALVE GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/RED WIRE HEATER FUEL CTRL HIGH CTRL LOW CTRL LOW REF LOW REFERENCE MOTOR CLOSE CTRL MOTOR HIGH SIGNAL MOTOR LOW SIGNAL MOTOR OPEN CTRL NAVIGATION SYSTEM OIL LEVEL SW SIGNAL OPEN CTRL RED WIRE RED/VIO WIRE REDUCTANT CONTROL MODULE RELAY 1 REDUCTANT CONTROL MODULE RELAY 2 SENS REPLICATED SIG SENSOR SIGNAL SENSOR VOLT SOLENOID CTRL STARTING/ CHARGING SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE