GMC Sierra IV (2018-2022) trailer lighting control module Wiring diagrams

ACCESSORY DC/AC POWER INVERTER MODULE BLU WIRE BLU/YEL WIRE DATA DATA BUS 2 GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE IMMOBILIZER CONTROL MODULE KEYLESS ENTRY CONTROL MODULE LEFT REAR WINDOW SWITCH LOGIC LIN BUS 1 LIN BUS 4 LO SPD SER DATA NETWORK SER PARKING ASSIST CONTROL MODULE PASSENGER PRESENCE MODULE REAR GATE MODULE REAR SEAT HEATING SWITCH RIGHT REAR WINDOW SWITCH LOGIC SEAT MEMORY CONTROL MODULE TRAILER LIGHTING CONTROL MODULE VIO/YEL WIRE WAKE-UP SERIAL WHT WIRE WHT/BLU WIRE

ACC WAKEUP ACC WAKEUP SER DATA ACCESSORY DC/AC POWER INVERTER MODULE ASSIST STEP CONTROL MODULE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE MASTER CYLINDER) BRAKE SYSTEM CONTROL MODULE BUS 31 BUS 33 GRN WIRE GRN/BLU WIRE GRN/WHT WIRE GRN/YEL WIRE HI SPD GMLAN HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (-) 2 HI SPD GMLAN SER DATA (-) 8 HI SPD GMLAN SER DATA (-) 9 HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 2 LEFT SIDE OBJECT SENSOR MODULE LIN SER DATA LIN SER DATA BUS 31 LIN SER DATA BUS 33 LO SPD GMLAN LOW SPD GMLAN NOT USED PARK BRAKE SWITCH REAR GATE MODULE RED/VIO WIRE RIGHT SIDE OBJECT SENSOR MODULE RUN/CRANK IGN 1 VOL SER DATA SER DATA (-) 5 SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE TRAILER BRAKE CONTROL SWITCH TRAILER BRAKE POWER CONTROL MODULE TRAILER LIGHTING CONTROL MODULE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BLK WIRE BLU WIRE BLU/WHT WIRE BRN/WHT WIRE CUSTOM, WORK TRUCK, TRAIL BOSS CUSTOM PACKAGE GRN/VIO WIRE GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT PARK/TURN SIGNAL LAMP LT, TRAIL BOSS LT, LTZ, RST PACKAGE PARK LAMPS RELAY RED/GRN WIRE STOP LAMP RELAY TRAILER LIGHTING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE WHT/VIO WIRE

BLK WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BRN/WHT WIRE GRN/VIO WIRE GROUND DISTRIBUTION SYSTEM GRY/BRN WIRE HEADLAMP RELAY HEADLIGHTS SYSTEM LEFT FRONT SIDE MARKER LAMP LEFT FRONT TURN SIGNAL LAMP LEFT HEADLAMP ASSEMBLY LEFT HEADLAMP MULTI-FUNCTION LED CONTROL MODULE PARK LAMPS RELAY RED/GRN WIRE STOP LAMP RELAY TRAILER LIGHTING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO/GRY WIRE VIO/WHT WIRE WHT/BLU WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

6.6L TURBO DIESEL AUXILIARY CHASSIS CONTROL MODULE BASE BASE EQUIPMENT BLK WIRE CAMPER TRAILER CONNECTOR ENDGATE MARKER LAMP EXCEPT BASE EXCEPT BASE EQUIPMENT FUEL HEATER/ WATER IN FUEL SENSOR FUEL PUMP DRIVER CONTROL MODULE GMC INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LOGIC NCA WIRE PASSENGER PRESENCE MODULE RIGHT BACKUP LAMP RIGHT CARGO LAMP RIGHT FENDER REAR SIDE MARKER LAMP RIGHT FRONT REAR FENDER CLEARANCE LAMP RIGHT LOWER TAIL/STOP, TURN SIGNAL LAMP RIGHT REAR REAR FENDER CLEARANCE LAMP RIGHT REAR SIDE MARKER LAMP RIGHT STOP/TURN SIGNAL LAMP RIGHT TAIL/ STOP/ TURN SIGNAL LAMP RIGHT UPPER TAIL/STOP, TURN SIGNAL LAMP TRAILER CONNECTOR TRAILER LIGHTING CONTROL MODULE TRAILER TIRE PRESSURE INDICATOR MODULE W/ TRAILER INFORMATION INDICATOR W/O TRAILER INFORMATION INDICATOR WHT WIRE

6.6L TURBO DIESEL AUXILIARY BATTERY AUXILIARY BATTERY RELAY 1 AUXILIARY BATTERY RELAY 2 AUXILIARY CHASSIS CONTROL MODULE AUXILIARY GENERATOR BATTERY BATTERY FUSE BLOCK BLK WIRE BODY CONTROL MODULE ELECTRICAL AUXILIARY HEATER ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE FUEL PUMP DRIVER CONTROL MODULE GENERATOR GLOW PLUG CONTROL MODULE POWER STEERING CONTROL MODULE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE REDUCTANT CONTROL MODULE STARTER MOTOR TO INSTRUMENT PANEL AUXILIARY FUSE BLOCK (DIAGRAM 10 OF 10) TO LEFT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 5 OF 10) TO RIGHT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 3 OF 10) TO RIGHT INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 4 OF 10) TO TRAILER CONNECTOR (CAMPER) (DIAGRAM 2 OF 10) TRAILER LIGHTING CONTROL MODULE TRANSFER CASE CONTROL MODULE VIO/BRN WIRE

10 SPEED A/T 6 SPEED A/T 6.6L TURBO DIESEL AUTOMATIC TRANSMISSION ASSEMBLY AUXILIARY CHASSIS CONTROL MODULE BLK WIRE BLU/VIO WIRE BODY CONTROL MODULE COLLISION ALERT INDICATORS CONTROL SOLENOID VALVE ASSEMBLY DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR ELECTRICAL AUXILIARY HEATER ENGINE CONTROL MODULE FROM TRAILER BACKUP LAMPS RELAY (DIAGRAM 7 OF 10) FRONT AXLE ENGAGEMENT ACTUATOR FRONT OVERHEAD CONSOLE ASSEMBLY FUEL PUMP DRIVER CONTROL MODULE GLOW PLUG CONTROL MODULE GRN WIRE GRN/VIO WIRE IGNITION MAIN RELAY INSIDE REAR VIEW MIRROR INSTRUMENT CLUSTER NCA WIRE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR REAR VIEW CAMERA REDUCTANT CONTROL MODULE RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH SERIAL DATA GATEWAY MODULE STEERING COLUMN LOCK MODULE STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE TO INSTRUMENT PANEL AUXILIARY FUSE BLOCK (DIAGRAM 10 OF 10) TO RETAINED ACCESSORY POWER RELAY 1 (DIAGRAM 3 OF 10) TRAILER LIGHTING CONTROL MODULE TRANSMISSION CONTROL MODULE VIO WIRE VIO/BLK WIRE VIO/GRN WIRE VIO/GRY WIRE VIO/WHT WIRE W/ BODY EQUIPMENT W/ DUAL TANK W/ FRONT HEATED SEATS W/ INTEGRATED TRAILER BRAKE CONTROL W/O BODY EQUIPMENT W/O DUAL TANK W/O INTEGRATED TRAILER BRAKE CONTROL

2.7L TURBO BACKUP ALARM (IF EQUIPPED) BACKUP LAMP RELAY CONTROL BATTERY FUSE BLOCK BLK WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BODY CONTROL MODULE (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS CIRCUIT GMLAN SERIAL DATA - 1 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND 17 GRY/BRN WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LEFT TRAILER TURN SIG LAMP CONTROL LH REAR TRAILER STOP/TURN LAMP CTRL LOW SPEED GMLAN SERIAL DATA NCA WIRE PARK LAMP RELAY CONTROL PARK LAMPS RELAY RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RH REAR TRAILER STOP/TURN LAMP CTRL RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY RIGHT TRAILER TURN SIG LAMP CONTROL RUN/CRANK IGNITION 1 VOLTAGE 4 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 56 SECONDARY FUSED BATTERY POSITIVE VOLTAGE 58 STOP LAMP RELAY COIL CONTROL TRAILER BACKUP LAMP CONTROL TRAILER BACKUP LAMPS RELAY TRAILER CONNECTOR TRAILER LIGHTING CONTROL MODULE TRAILER PARK LAMP CONTROL UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/WHT WIRE W/ SPECIAL EQUIPMENT W/O SPECIAL EQUIPMENT WHT WIRE WHT/GRN WIRE YEL/BLU WIRE YEL/GRY WIRE

BATT POS VOLT 56 BLK WIRE BLU WIRE COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS CIRCUIT GND 17 GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/BRN WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT 4 LAMP CTRL LOW SPD GMLAN SERIAL DATA RED/GRN WIRE RED/VIO WIRE RED/YEL WIRE RLY COIL CTRL SECONDARY FUSED BATTERY POSITIVE VOLTAGE 58 TRAILER BACKUP LAMP CTRL TRAILER CONNECTOR TRAILER LIGHTING CONTROL MODULE TRAILER PARK LAMP CTRL UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/WHT WIRE W/ SPECIAL EQUIPMENT W/O SPECIAL EQUIPMENT WHT WIRE WHT/GRN WIRE YEL/BLU WIRE YEL/GRY 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