GMC Sierra IV (2018-2022) powertrain main Wiring diagrams

BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE APPLY BRAKE PEDAL POSITION SENSOR BRN/WHT WIRE COMPUTER COMPUTER DATA LINES SYSTEM DATA 1 (+) DATA LINES ENGINE CONTROL MODULE ENGINE CTRL ENGINE CTRL SENS LO REF 1 ENHANCED DRV MODE 2 SW SIG GMLAN SERIAL GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/WHT WIRE HEATED OXYGEN HEATED OXYGEN SENS HEATED OXYGEN SENS HEATER HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HI SIG BANK 1 SENS (1) HI SIG BANK 2 SENS 2 HI SPD GMLAN HIGH SPD IGNITION CTRL 2 IGNITION CTRL 3 IGNITION CTRL LO REF BANK 2 KNOCK SENS LO REF KNOCK SENS LO REF 1 LIN SERIAL DATA BUS 21 LO CTRL BANK 1 SENS (1) LO CTRL BANK 1 SENS (2) LO CTRL BANK 2 SENS 1 LO CTRL BANK 2 SENS 2 LO SIG BANK 1 SENS 1 LO SIG BANK 2 SENS 1 LO SIG BANK 2 SENS 2 LOCAL INTERCONNECT NETWORK MAIN RELAY FUSED SPLY 5 NCA WIRE OIL PUMP COMMAND SIG POWERTRAIN POWERTRAIN MAIN RED/BRN WIRE RED/VIO WIRE RELAY FUSED SPLY 1 SENS 5 VOLT REF 2 SENS CTRL SENS HI SIG BANK 2 SENS 1 SENS LO REF SENS SIG SERIAL SYSTEM SYSTEMS THROTTLE ACTR CTRL CLOSE TRANSMISSIONS TRANSMISSIONS SYSTEM VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/WHT WIRE

BLK WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BRN/BLU WIRE BRN/WHT WIRE COMPUTER DATA ENGINE CONTROL MODULE ENGINE CTRL ENGINE CTRL MOD LIN BUS 1 ENGINE CTRL MOD LIN BUS 2 ENGINE CTRL SENS LO REF 1 ENGINE OIL PUMP CONTROL ENHANCED DRV MODE 2 SW SIG GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/WHT WIRE HEATED OXYGEN HEATED OXYGEN SENS HEATED OXYGEN SENS HEATER HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HI SIG BANK 1 SENS (1) HI SIG BANK 2 SENS 2 HOT AT ALL TIMES IGNITION CTRL (5) IGNITION CTRL 3 IGNITION CTRL 4 IGNITION CTRL 6 IGNITION CTRL LO REF BANK 2 KNOCK SENS LO REF KNOCK SENS LO REF 1 LINES SYSTEM LO CTRL BANK 1 SENS (2) LO CTRL BANK 1 SENS 1 (3) LO CTRL BANK 2 SENS 1 LO CTRL BANK 2 SENS 2 LO SIG BANK 1 SENS 1 LO SIG BANK 2 SENS 1 LO SIG BANK 2 SENS 2 MAIN RELAY FUSED SPLY 5 NCA WIRE POWERTRAIN POWERTRAIN MAIN RED/BRN WIRE RED/GRY WIRE RED/VIO WIRE RELAY FUSED SPLY 1 RIGHT INSTRUMENT PANEL FUSE BLOCK SENS 5 VOLT REF 1 SENS HI SIG BANK 2 SENS 1 SPARK PLUG SYSTEM THROTTLE ACTR CTRL CLOSE TRANSMISSIONS VIO/BLU WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE W/ DUAL TANK W/O DUAL TANK WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/RED WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/WHT WIRE