GMC Sierra IV (2018-2022) yel Wiring diagrams

ACCESSORY WAKEUP BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER LEFT SIDE OF DASH) DATA BUS 1 DATA BUS 11 DATA BUS 15 DATA BUS 2 DATA BUS 3 DATA BUS 4 DATA BUS 8 DRIVER WINDOW MOTOR LOGIC DRIVER WINDOW/ OUTSIDE REARVIEW MIRROR SWITCH FRONT SEAT HEATING CONTROL MODULE GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPD SER (+) 1 HI SPD SER (-) 5 LEFT SIDE OBJECT SENSOR MODULE LO SPD LO SPD SER DATA NETWORK SER PASSENGER WINDOW MOTOR LOGIC PASSENGER WINDOW SWITCH LOGIC REAR SEAT HEATING CONTROL MODULE RIGHT SIDE OBJECT SENSOR MODULE SER COMM ENABLE SER DATA SUNROOF MOTOR VIO WIRE VIO/YEL WIRE W/ EXPRESS UP/DOWN W/O VARIABLE ASSIST POWER STEERING WHT WIRE WHT/BLU WIRE YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE APPLY BRN WIRE BRN/RED WIRE BRN/WHT WIRE CLUSTER COMPUTER DATA LINES SYSTEM DATA 1 (+) DISABLE SIG FUEL PRESSURE FUEL PRESSURE SENSOR FUEL PUMP FUEL PUMP CTRL FUEL PUMP SUPPLY FUSED BATT GMLAN SERIAL GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE HI SPD GMLAN HIGH SPD IGN 1 VOLT 4 INSTRUMENT LOW REF PHASE 3 POSITIVE VOLTAGE 53 POWER MODULE PRIMARY FUEL PUMP, LEVEL SENSOR ASSEMBLY RED/BRN WIRE RED/VIO WIRE RELAY CTRL SECONDARY SECONDARY FUEL PUMP SENS 2 LO REF SENS CTRL SENS LO REF SENS LOW REF SENS SIG SENS SIG 2 SERIAL SERIAL DATA (-) 7 SHIELD GND SUPPLY VOLTAGE SYSTEM VIO/BLU WIRE VIO/GRN WIRE VOLTAGE PHASE 2 W/ DUAL TANK W/O DUAL TANK WAKE UP SIG WHT WIRE WHT/BRN WIRE WHT/GRN WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

5-VOLT REF 1 BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/WHT WIRE CAMSHAFT CAMSHAFT POSITION CHARGE IND CTRL CHARGING CRANKSHAFT POSIT SENS CRANKSHAFT POSITION ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) ENGINE CONTROLS IGNITION RELAY ENGINE CTRL SENS EVAPORATIVE EMISSION VENT SOLENOID VALVE GRN WIRE GRN/BLU WIRE GROUND 4 GRY/BLU WIRE HEATED OXYGEN SENS HI SIG BANK 1 SENS (2) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN CTRL (4) IGN CTRL (8) INTAKE SENS 1 INTAKE SENS 1 VOLT REF KNOCK SENS SIG 1 KNOCK SENS SIG 2 KNOCK SENSOR #2 KNOCK SENSOR 1 LO SIG BANK 1 SENS 2 NCA WIRE PHASER INTAKE SOL 1 POWER DISTRIBUTION SYSTEM POWER MODULE RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE REPLICATED SIGNAL SENS SIG SOUND SPARK PLUG STARTING/ SYSTEM SYSTEMS THROTT ACTR CTRL OPEN TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLU WIRE VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE W/ TRAILER INFORMATION WAKE UP SIGNAL WHT WIRE WHT/GRY WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/VIO WIRE

BLK WIRE BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/BLU WIRE BRN/RED WIRE BRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR ENGINE OIL PRESSURE CONTROL SOLENOID VALVE ENGINE OIL TEMPERATURE SENSOR FUEL INJECTOR 7 FUEL INJECTOR 8 GRN WIRE GRN/BLU WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 6 IGNITION COIL 7 LOGIC MANIFOLD ABSOLUTE PRESSURE SENSOR NCA WIRE SPARK PLUG THROTTLE BODY (AT INTAKE MANIFOLD INLET) VIO/BLU WIRE VIO/BRN WIRE WHT WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/VIO 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

BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRN WIRE BRN/BLU WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CAMSHAFT POSITION SENSOR CAMSHAFT SENSOR 1 CHARGE IND CTRL CTRL CYLINDER 1 CTRL CYLINDER 2 CTRL CYLINDER 3 CTRL CYLINDER 4 CTRL CYLINDER 5 CTRL CYLINDER 6 CTRL CYLINDER 7 CTRL CYLINDER 8 EARLY PRODUCTION LATE PRODUCTION ENGINE CONTROL MODULE EXHAUST AFTERTREATMENT FUEL INJECTOR EXHAUST GAS RECIRCULATION COOLER BYPASS SOLENOID VALVE FUEL INJECTOR 1 FUEL INJECTOR 2 FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 FUEL INJECTOR 7 FUEL INJECTOR 8 FUEL PRESSURE REGULATOR 2 GRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE INTAKE AIR FLOW VALVE INTAKE MANIFOLD PRESSURE, AIR TEMPERATURE SENSOR LOW REFERENCE LOW REFERENCE 1 SENSOR 2 SIGNAL SENSOR SIG SENSOR SIGNAL SPLY CYLINDER 1 SPLY CYLINDER 2 SPLY CYLINDER 3 SPLY CYLINDER 4 SPLY CYLINDER 5 SPLY CYLINDER 6 SPLY CYLINDER 7 SPLY CYLINDER 8 STARTING/CHARGING SYSTEM TEMP SIG VALVE SENSOR SIG VIO/BRN WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/RED WIRE VOLT REF WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE YEL/VIO WIRE

ACCELERATOR PEDAL POSITION SENSOR AIR CONDITIONING SYSTEM BATT POS VOLT BLK/BLU WIRE BLK/BRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/YEL WIRE BRAKE APPLY SENSOR SIGNAL BRAKE SIGNAL BRN/BLK WIRE BRN/GRY WIRE BRN/RED WIRE BRN/WHT WIRE CLUTCH RELAY CONTROL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE CONTROL SYSTEM DATA ENGINE CONTROL MODULE ENGINE INDICATOR CTRL FLOW SENSOR SIGNAL FUEL PRESSURE REGULATOR 1 GMLAN SERIAL DATA (+) 7 GMLAN SERIAL DATA - 1 GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND 4 GRY WIRE HOT AT ALL TIMES HUMIDITY SENSOR SIG LOW REF LOW REFERENCE LOW REFERENCE (2) MODE 2 SWITCH SIG MODULE LIN BUS 1 NAVIGATION SYSTEM PEDAL POSITION LOW REF 1 POSITION SIGNAL 1 POSITION SIGNAL 2 PRESSURE SENSOR SIGNAL PRIMARY RLY CONTROL RED/BRN WIRE REF RELAY COIL CONTROL RELAY FUSED SUPPLY 1 RUN/CRANK IGN 1 VOLTAGE SENSOR SENSOR LOW REFERENCE SERIAL DATA (-) (1) SERIAL DATA (-) 7 SIG SPEED CTRL SIGNAL START INDICATOR CONTROL STARTER ENABLE RLY CONTROL STARTING/CHARGING SYSTEM SWITCH LOW REFERENCE TEMPERATURE SENSOR SIGNAL UNDERHOOD FUSE BLOCK VALVE HIGH CONTROL VALVE LOW CONTROL VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE VOLT WAKEUP SERIAL DATA WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

A/C COMPRESSOR CLUTCH RELAY ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR ACTIVE GRILLE AIR SHUTTER 2 ACTUATOR AUXILIARY UNDERHOOD FUSE BLOCK BLK WIRE BLK/VIO WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/GRN WIRE BRN/GRY WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FAN RELAY ENGINE CONTROLS IGNITION RELAY FUEL HEATER RELAY GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE HOT AT ALL TIMES IGN LATE PRODUCTION EARLY PRODUCTION LOGIC MULTI-FUNCTION INTAKE AIR SENSOR NCA WIRE RED/YEL WIRE SERIAL DATA (-) 7 SIGNAL GROUND TURBOCHARGER VANE POSITION ACTUATOR UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BLU WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

5-VOLT REFERENCE BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/WHT WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/YEL WIRE COMPUTER DATA COMPUTER DATA LINES SYSTEM ENGINE OIL LEVEL SWITCH FUEL RAIL PRESSURE SENSOR GND 16 GRN/BLU WIRE GROUND 16 HEATER CONTROL LOW HEATER CTRL IGNITION 1 VOLTAGE 4 LINE HEATER CTRL LINE HEATER LOW CTRL LINES SYSTEM LOGIC LOW REF MODULE WAKE-UP SIG POSITIVE VOLTAGE 34 PRESSURE SENSOR SIG RED WIRE RED/VIO WIRE RED/WHT WIRE REDUCTANT CONTROL MODULE REDUCTANT LINE HEATER REDUCTANT PRESSURE SENSOR REDUCTANT PUMP REDUCTANT PUMP, SENSOR ASSEMBLY (OUTSIDE OF LEFT FRAME, UNDER REAR OF CAB) REDUCTANT SENSOR MODULE REDUCTANT TANK HEATER REDUCTANT TEMPERATURE SENSOR SENSOR 5 VOLT REF SENSOR FEEDBACK SIG SERIAL DATA (-) (1) SERIAL DATA (-) 7 SMART PUMP CONTROL TANK 2 HEATER CTRL TANK HEATER LOW CTRL TEMP SENSOR SIG VIO/BLU WIRE VIO/GRN WIRE VIO/YEL WIRE VOLTAGE PHASE 2 VOLTAGE PHASE 3 WAKE UP SERIAL DATA WHT WIRE YEL 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