GMC Sierra IV (2018-2022) blk Wiring diagrams

BATT POS VOLT 33 BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE DATA COMM ENABLE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) GND 18 GRN WIRE GRN/WHT WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) 11 HI SPD GMLAN SERIAL DATA (-) 12 HI SPD GMLAN SERIAL DATA (-) 13 HI SPD SER DATA (-) 2 HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LO SPD SER DATA LOW SPEED GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA 2 LOW SPEED GMLAN SERIAL DATA 3 RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA GATEWAY MODULE (UNDER LEFT SIDE OF DASH) W/ MULTI COLOR STANDARD W/O MULTI COLOR STANDARD WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BATT POS VOLT 33 BLK WIRE BLK/WHT WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE DATA COMM ENABLE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) GND 18 GRN WIRE GRN/WHT WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) 11 HI SPD GMLAN SERIAL DATA (-) 12 HI SPD GMLAN SERIAL DATA (-) 13 HI SPD SER DATA (-) 2 HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LO SPD SER DATA LOW SPEED GMLAN SERIAL DATA LOW SPEED GMLAN SERIAL DATA 2 LOW SPEED GMLAN SERIAL DATA 3 RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SERIAL DATA GATEWAY MODULE (UNDER LEFT SIDE OF DASH) W/ MULTI COLOR STANDARD W/O MULTI COLOR STANDARD WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY 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 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

BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/VIO WIRE COMPUTER COMPUTER DATA LINES SYSTEM DATA LINES EXHAUST PARTICULATE MATTER SENSOR FUEL PUMP CTRL FUEL SENSOR SIG GMLAN SERIAL DATA (+) 7 GRN/BLU WIRE GRN/GRY WIRE GROUND 17 GRY WIRE IGNITION 1 VOLTAGE 4 LOW REF LOW REFERENCE MODULE WAKE-UP SIG NITROGEN OXIDES SENSOR 1 NITROGEN OXIDES SENSOR 2 POS VOLTAGE 53 PRESSURE SENSOR SIG PRIMARY RELAY CTRL PUMP RLY CTRL RED/VIO WIRE RED/WHT WIRE SECONDARY FUEL LEVEL SENSOR SECONDARY FUEL PUMP SECONDARY FUEL PUMP, FUEL LEVEL SENSOR ASSEMBLY SENSOR 2 LOW REF SENSOR SIG SENSOR SIG 2 SHIELD GROUND SYSTEM TEMP SENSOR LOW REF TEMP SIG VIO/BLU WIRE VIO/GRN WIRE VOLT REF VOLTAGE PHASE 2 VOLTAGE PHASE 3 WHT WIRE WHT/BRN WIRE WHT/RED WIRE YEL/BLU WIRE YEL/GRY WIRE