GMC Sierra IV (2018-2022) blu/yel Wiring diagrams

5 VOLT REF HUMIDITY/WINDSCREEN TEMP, INSIDE MOISTURE SENS LO REF A/C COMP SOL VALVE CTRL A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT LIGHT/SUNLOAD SENSOR ANTI-THEFT SYSTEM AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER RLY CTRL DEFOGGER SYSTEM ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG 2 HUMIDITY TEMP SENS SIG HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) INSIDE AIR TEMP SENS SIGNAL LIN BUS 1 LIN SERIAL DATA BUS 19 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE WHT/BLU WIRE WINDSCREEN TEMP SENS SIG WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR YEL/BLU WIRE YEL/RED WIRE

BATT POS VOLT 18 BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/WHT WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR DRIVER SIDE OBJECT DETECTION INDICATOR GRN WIRE GROUND 17 GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/YEL WIRE HOT AT ALL TIMES LED CTRL LEFT SIDE OBJECT SENSOR MODULE LOW SPD SER DATA PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER SIDE OBJECT DETECTION INDICATOR POWER DISTRIBUTION SYSTEM RED/GRN WIRE RIGHT SIDE OBJECT SENSOR MODULE SERIAL DATA (-) 5 UNDERHOOD FUSE BLOCK

BLK/BLU WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/BLU WIRE BUS 12 BUS 3 COMM ENABLE DRIVER WINDOW MOTOR DRIVER WINDOW/OUTSIDE REAR VIEW MIRROR SWITCH ETHERNET BUS 7 (-) GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HEAD-UP DISPLAY HI SPD SER DATA (+) 9 LIN SER DATA LIN SER DATA BUS 12 LO SPD DATA 2 LO SPD GMLAN PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH RIGHT STEERING WHEEL CONTROLS SWITCH SER DATA STEERING WHEEL AIR BAG COIL VIO/YEL WIRE W/ DRIVER WINDOW W/ EXPRESS UP/DOWN W/ MULTI COLOR STANDARD GRAPHIC W/ PASSENGER WINDOW W/O EXPRESS UP/DOWN W/O MULTI COLOR STANDARD GRAPHIC WHT WIRE WHT/BLU WIRE WHT/GRN WIRE

BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLU WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY GMLAN SER DATA (-) (2) GMLAN SER DATA - (1) GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/WHT WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT FRONT SHOCK ABSORBER ACTUATOR LEFT FRONT SUSPENSION POSITION SENSOR LEFT REAR SHOCK ABSORBER ACTUATOR LF DAMPING SERVO CTRL LF STRUT POS SENS SIG LF STRUT SENS LOW REF LO SPD GMLAN SERIAL DATA 2 LOGIC LR DAMPING SERVO CTRL LR STRUT POS SENS SIG LR STRUT SENS LOW REF REAR SUSPENSION POSITION SENSOR RED/GRN WIRE RF DAMPING SERVO CTRL RF STRUT POS SENS SIG RF STRUT SENS LOW REF RIGHT FRONT SHOCK ABSORBER ACTUATOR RIGHT FRONT SUSPENSION POSITION SENSOR RIGHT REAR SHOCK ABSORBER ACTUATOR RR DAMPING SERVO CTRL SER DATA COMM ENABLE SUSPENSION CONTROL MODULE UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE YEL/RED WIRE YEL/WHT WIRE

2.7L TURBO 3.0L TURBO DIESEL BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENSOR CONTROL BRAKE APPLY SENSOR SIG BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO BED LAMP CONTROL CARGO LAMP SW SIG COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR PUDDLE LAMP CONTROL PUDDLE LAMP CONTROL ENGINE CONTROL ENGINE CONTROL MODULE ENGINE CONTROL SENS LO REF 3 GMLAN DATA - (1) GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SW SIG HEADLAMP SW PARK LAMP SIG HOT AT ALL TIMES LAMP RELAY CONTROL LEFT LICENSE PLATE LAMP LF TURN SIG LAMP CONTROL LICENSE PLATE LAMP LR STOP/TURN LAMP CONTROL PARK LAMP RELAY CONTROL POLICE SELECT SUPPLY VOLT 4 PUDDLE LAMP CONTROL REAR LICENSE LAMP CONTROL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN SIG LAMP CONTROL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP RR STOP/TURN LAMP CONTROL SENS LO REF SER DATA (-) (1) STOP LAMP RELAY CONTROL TURN SIGNAL/ MULTI-FUNCTION SWITCH VEHICLE STABILITY CONTROL SWITCH VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ FLEETSIDE PICK-UP BOX W/O FLEETSIDE PICK-UP BOX WHT WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE

2.7L TURBO 3.0L TURBO DIESEL BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (LEFT END OF DASH) BRAKE APPLY SENSOR CONTROL BRAKE APPLY SENSOR SIG BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENSOR BRN/GRN WIRE BRN/WHT WIRE CARGO BED LAMP CONTROL CARGO LAMP SW SIG COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR PUDDLE LAMP CONTROL PUDDLE LAMP CONTROL ENGINE CONTROL ENGINE CONTROL MODULE ENGINE CONTROL SENS LO REF 3 FRT TURN LAMP FEEDBACK SIG GMLAN DATA - (1) GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HAZARD SW LT TURN SIG HAZARD SW RT TURN SIG HAZARD SW SIG HEADLAMP SW PARK LAMP SIG HOT AT ALL TIMES LAMP RELAY CONTROL LEFT HEADLAMP RELAY CONTROL LEFT LICENSE PLATE LAMP LF TURN SIG LAMP CONTROL LICENSE PLATE LAMP LR STOP/TURN LAMP CONTROL PARK LAMP RELAY CONTROL POLICE SELECT SUPPLY VOLT 4 PUDDLE LAMP CONTROL REAR LICENSE LAMP CONTROL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN LAMP FEEDBACK SIG RF TURN SIG LAMP CONTROL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT LICENSE PLATE LAMP RR STOP/TURN LAMP CONTROL SENS LO REF SER DATA (-) (1) STOP LAMP RELAY CONTROL SYSTEM TURN SIGNAL/ MULTI-FUNCTION SWITCH VEHICLE STABILITY CONTROL SWITCH VIO/BLU WIRE VIO/WHT WIRE VIO/YEL WIRE W/ FLEETSIDE PICK-UP BOX W/O FLEETSIDE PICK-UP BOX WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/BRN WIRE

ABS IND. AIR BAG IND AUTO STOP IND BATT POS VOLT BLK/WHT WIRE BLU/GRN WIRE BLU/YEL WIRE BRAKE IND BRN WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE CHARGE GAUGE CHARGE IND CHK ENG IND CTRL COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRUISE IND DISPLAY DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE GAUGE ENGINE OIL LEVEL GAUGE ENGINE OIL LEVEL SWITCH ESC IND ESC OFF IND ETHERNET BUS 7 (-) FORWARD COLLISION ALERT LED CTRL FRONT FOG LAMP IND FUEL GAUGE GLOW PLUG IND GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HEAD-UP DISPLAY CIRCUIT HIGH BEAM LAMP IND HILL DESCENT CONTROL IND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED ILL IND INSTRUMENT CLUSTER INTELLIBEAM LAMP IND KM/H IND LANE KEEP ASSIST LEFT TURN IND LIN BUS 1 LOGIC LOW COOLANT LVL IND CTRL DAY NIGHT LED CTRL LOW FUEL IND LOW SPD GMLAN SERIAL DATA 2 LVDS MALFUNCTION IND MPH IND NAVIGATION SYSTEM OFF IND PARK IND PARK LAMPS IND PEDESTRIAN AHEAD IND PTO IND RED/GRY WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT TURN IND RPM IND RUN/CRANK IGN 1 VOLT SEAT BELT IND SECURITY IND SERIAL DATA (-) 9 SERIAL DATA COMMUNICATION ENABLE LOW WASHER FLUID IND CTRL SERVICE PARK BRAKE IND SIGNAL GROUND SPEEDOMETER TACHOMETER TIRE PRESSURE IND TOW/HAUL IND TRACTION CONTROL OFF IND VEHICLE AHEAD IND VIO WIRE VIO/BLK WIRE W/ MULTI COLOR ENHANCED GRAPHIC W/ ONE COLOR GRAPHIC WAIT TO START IND CTRL WHT/BLU WIRE WHT/GRN WIRE WIPER/WASHER SYSTEM

5 VOLT REF A/C COMP SOL VALVE CTRL A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AMBIENT LIGHT/SUNLOAD SENSOR ANTI-THEFT SYSTEM AUXILIARY HEATER CTRL BATT POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MTR SPD CTRL BLOWER SPEED FEEDBACK SIGNAL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/GRN WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DEFOGGER RLY CTRL DEFOGGER SYSTEM ELECTRICAL AUXILIARY HEATER GRN WIRE GRN/BLU WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/GRN WIRE HEADLIGHTS SYSTEM HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG 2 HUMIDITY TEMP SENS SIG HVAC CONTROL MODULE (BEHIND LEFT CENTER OF DASH) INSIDE AIR TEMP SENS SIGNAL LIN BUS 1 LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE RED/GRY WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN IGNITION 3 VOLTAGE SOLAR SENSOR DRIVER SIGNAL SOLAR SENSOR LOW REFERENCE TEMP SENS LOW REF VIO WIRE VIO/BLK WIRE VIO/BRN WIRE VIO/GRY WIRE WHT/BLU WIRE WINDSCREEN TEMP SENS SIG WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR YEL/BLU WIRE YEL/RED WIRE

ALL WIND OPEN SW SIG ABS/TRACTION CTRL HILL DESCENT CTRL SW SIG BLK WIRE BLU/YEL WIRE BODY CONTROL MODULE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM DOWN DRIVER WINDOW MOTOR EXPRESS GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH LIN BUS 3 LOGIC OPTION 1 OPTION 1 OPTION 2 OPTION 2 OPTION 1 OPTION 2+ PASSENGER WINDOW MOTOR PASSENGER WINDOW SWITCH (W/ EXPRESS UP/DOWN) RED/BLU WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH VIO/GRY WIRE W/ EXPRESS UP/DOWN W/ MEMORY W/O MEMORY OPTION 1 OPTION 2 YEL WIRE YEL/BLK WIRE

AIR BAG IND AIR BAG OFF IND AIR BAG ON IND BATT POS VOLT PASS SEAT BELT IND BLK WIRE BLK/WHT WIRE BLU WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/ORG WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY FRONT OVERHEAD CONSOLE ASSEMBLY GRN WIRE GRY WIRE GRY/GRN WIRE GRY/ORG WIRE HI SPD GMLAN (-) 2 INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL CENTER ACCESSORY FUNCTION SWITCH LO SPD GMLAN LOGIC LOW SPD GMLAN SERIAL DATA MOD STAGE 1 HI MOD STAGE 1 LO MOD STAGE 2 HI MOD STAGE 2 LO ORG/ WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/WHT WIRE PASS AIR BAG OFF IND PASS AIR BAG ON IND PASS MOD SW RET PASS MOD SW SIG PASS STAGE 1 HI PASS STAGE 1 LO PASS STAGE 2 HI PASS STAGE 2 LO PASSENGER INSTRUMENT PANEL AIR BAG RED/GRN WIRE SD COMM ENABLE SEAT BELT IND SERIAL DATA SHORTING BAR STEERING WHEEL AIR BAG COIL VIO WIRE VIO/WHT WIRE W/ ROLL OVER SENSING SWITCH WHT WIRE WHT/BLU WIRE WHT/ORG WIRE YEL WIRE YEL/ORG WIRE