GMC Terrain II facelift (2021-2024) vio/blk Wiring diagrams

ABS/TCS HILL DESCENT CTRL SW SIG ACC IGN VOLT ACC IND AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-THEFT SYSTEM AUTOMATIC HI ON/OFF SW SIG BACKUP LAMP CTRL BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BLU/YEL WIRE BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DIMMER SW LO REF DIMMER SW SIG DIMMING IND DIST SEN CRU CTRL GAP UP/DOWN SW SIG HDLP SW FLASH SIG HORN SW SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER DR LOCK SW LOCK SIG TRAILER BRAKE APPLY SIG DRIVER DR LOCK SW UNLOCK SIG ENGINE START/ STOP SWITCH EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS FRONT FOG LAMP SW SIG GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HAZARD LED DIMMING SIG HAZARD SW LEFT TURN SIG HAZARD SW SIG HDLP DIMMER SW HI BEAM SIG HDLP SW OFF SIG HDLP SW ON SIG HDLP SW PARK LAMPS SIG HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA (+) 1 REMOTE FUNCTION ACTUATOR RECEIVE SIG HI SPD GMLAN SERIAL DATA (-) (1) HORNS SYSTEM HOT AT ALL TIMES IGN MODE SW ACC LED SIG IGN MODE SW START LED SIG IGNITION MODE SW MODE VOLT IGNITION MODE SWITCH IMMOBILIZER CTRL MODULE CTRL INDICATOR DIMMING CTRL INFOTAINMENT REGULATED CTRL INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE LED BACKLIGHT DIMMING CTRL 1 LEFT FRONT DRL CTRL LIN BUS 4 LIN BUS 5 LOW SPD GMLAN SERIAL DATA PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM REAR FOG LAMP SW SIG REAR WINDOW WIPER SW SIG RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE REMOTE FUNCTION ACTR CTRL RUN/CRANK IGN 1 VOLT SECURITY INDICATOR CTRL SET/COAST/RESUME/ ACCELERATE SW SIG WINDSHIELD WIPER SW LOW REF SHIFT SELECT SW PERFORMANCE SIG START IND STOP/START INDICATOR CTRL TAP UP/TAP DOWN SW SIG TRANSMISSIONS SYSTEM VIO/BLK WIRE VIO/BLU WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LOW SIG WIPER/WASHER SYSTEM WIRELESS CHARGE SYSTEM CHARGE IND CTRL HAZARD SW RIGHT TURN SIG YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ACCESSORY WAKEUP SERIAL DATA BACKUP LAMP CTRL BACKUP LAMP RELAY CTRL BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS CTRL DOME LAMP OFF INDICATOR CTRL DOOR LOCK CTRL DOOR LOCKS, ANTI-THEFT SYSTEMS DR LCK ACTUATOR UNLOCK CTRL DR LOCK ACTUATOR LOCK CTRL DRIVER MODE 1 INDICATOR CTRL DRIVER MODE 2 INDICATOR CTRL DRIVER MODE 4 INDICATOR CTRL DRIVER MODE 5 INDICATOR CTRL DRL RELAY CTRL EXTERIOR LIGHTS SYSTEM TRANSMISSIONS SYSTEM FRONT FOG LAMP CONTROL FRONT TURN SIG LAMP FEEDBACK SIG FRONT WINDSHIELD WIPER SW HIGH SIG LIFT GLASS/REAR COMPT LID MTR RELEASE CTRL GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/YEL WIRE HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEMS HI SPEED GMLAN DATA BUS (+) 1 HI SPEED GMLAN DATA BUS (-) 1 RIGHT FRONT DRL CONTROL HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INADVERTENT POWER CTRL INSTRUMENT CLUSTER SYSTEM INTERIOR LAMP CTRL INTERIOR LAMP DEFEAT SW SIG KEY CAPTURE/COLUMN LOCK SHIFT POS SIG LED BACKLIGHT DIMMING CTRL 1 LEFT HEAD LAMP HIGH BEAM CONTROL LEFT HEADLAMP RELAY CONTROL LF HDLP LO BEAM CTRL LF TURN SIG LAMP CTRL LH PARK LAMP CTRL 2 LH STOP/TAIL LAMP FEEDBACK SIG LIFTGATE AJAR SWITCH SIG 1 LOCAL INTERCONNECT NETWORK BUS 2 LOCAL INTERCONNECT NETWORK BUS 3 LR TURN SIG LAMP CTRL PARK LAMP RELAY CONTROL PARK LOCK SOLENOID CTRL POWER DISTRIBUTION SYSTEM PUSH BUTTON START CHALLENGE ACTIVE REAR COMPT LID LAMP CTRL REAR LICENSE LAMP CTRL REAR WINDOW WASHER RELAY CTRL REAR WIPER MOTOR RELAY COIL CTRL RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RF TURN SIG LAMP CTRL RF TURN SIG LAMP FEEDBACK SIG RH HDLP LO BEAM CTRL RH PARK LAMP CTRL 2 RH STOP/TAIL LAMP FEEDBACK SIG RIGHT REAR TURN SIG LAMP CTRL RR CLOSURE HANDLE SW OPEN SIG LINEAR INTERCONNECT NETWORK DATA BUS 1 RUN/CRANK RELAY COIL CTRL SERIAL DATA COMM ENABLE SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS SIDE MARKER/LICENSE LAMP CTRL STARTING/CHARGING SYSTEM STOP LAMP RELAY COIL CTRL TRAILER BRAKE APPLY SIG TRANS SHIFT LEVER POSITION IND 2 CTRL TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS VIO WIRE VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RELAY CTRL WINDSHIELD WIPER MTR PARK SW SIG WINDSHIELD WIPER MTR RLY COIL CTRL WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/VIO WIRE

& RECEIVER ACC IGN VOLT ACTR LOCK CTRL ACTR UNLCK CTRL BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER CONSOLE FRONT KEYLESS ENTRY ANTENNA CENTER CONSOLE REAR KEYLESS ENTRY ANTENNA COMPUTER DATA LINES SYSTEM CTRL DR LOCK CTRL DRIVER DOOR LOCK SWITCH DRV DR OPEN SW SIG IGNITION MODE SWITCH CHALLENGE ACTIVE SIG GMLAN SER DATA GMLAN SER DATA (+) 1 SEC IND CTRL GMLAN SER DATA - (1) GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HI INTR ANT SIG 1 HI INTR ANT SIG 2 HI INTR ANT SIG 3 HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IGN 1 VOLT IGNITION MODE SWITCH IGNITION MODE SWITCH CHALLENGE ACTIVE SIG INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE LH HDLP LO BEAM CTRL LOCK SIG LOW INTR ANT SIG 1 LOW INTR ANT SIG 2 LOW INTR ANT SIG 3 LOW REF PASS DOOR LOCK SW LOCK CTRL PASS DOOR LOCK SW UNLOCK CTRL PASSENGER DOOR LOCK SWITCH POWER DISTRIBUTION SYSTEM RAP RLY 2 COIL CTRL RCV SIG RECEIVE SIG RECEIVER CTRL RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RH HDLP LO BEAM CTRL SW SIG 2 TRANS SIG UNLCK SIG VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

BACK SWITCH BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM CUSHION, BACK SWITCH DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR DRV SEAT VENT MOTOR CTRL 1 GRN/VIO WIRE GRN/WHT WIRE GRY/BLK WIRE HIGH TEMP IND HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT ILL LEFT "C" PILLAR) LOGIC LOW TEMP IND MED TEMP IND NCA WIRE PASS SEAT VENT MOTOR CTRL 1 PASSENGER BACK SEAT BLOWER MOTOR PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER CUSHION SEAT HEATING ELEMENT PASSENGER SEAT HEATING SWITCH RED/YEL WIRE UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/GRY WIRE VIO/WHT WIRE WHT/BLU WIRE WHT/GRY WIRE

BATT POS VOLT BLK WIRE BLU WIRE BLU/RED WIRE BODY CONTROL MODULE (LEFT END OF DASH) COMPUTER DATA LINES SYSTEM GMLAN SER DATA - (1) GRN/RED WIRE GROUND HEATED STEERING WHEEL IND HEATED STEERING WHEEL SWITCH HIGH CTRL HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INDICATOR DIMMING CTRL INSTRUMENT PANEL FUSE BLOCK LED CTRL LEFT STEERING WHEEL CONTROLS SWITCH LOGIC NCA WIRE ORG/ WIRE RED WIRE RED/GRN WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SENS SIG STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATING CONTROL MODULE SW SIG UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VOLT REF WHT WIRE WHT/YEL WIRE YEL WIRE YEL/RED WIRE

ACTIVE GRILLE AIR SHUTTER 1 ACTUATOR AUTOMATIC TRANSMISSION ACCUMULATOR SOLENOID VALVE AUXILIARY COOLANT PUMP RELAY DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR ENGINE CONTROL MODULE ENGINE CONTROLS IGNITION RELAY GMC HEATED OXYGEN SENSOR 2 IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 INSIDE REAR VIEW MIRROR MULTI-FUNCTION INTAKE AIR SENSOR NCA WIRE ORG/ WIRE PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR REAR VIEW CAMERA STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATING CONTROL MODULE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/WHT WIRE W/ VENTILATED SEAT YEL WIRE

A/C COMPRESSOR CLUTCH RELAY ACC IND ACC LED SIG ACCESSORY IGN VOLT ACCESSORY VOLT BLK WIRE BLK/GRY WIRE BLU/BLK WIRE BLU/GRN WIRE BODY CONTROL MODULE BRN/BLK WIRE ENGINE OIL PRESSURE CONTROL SOLENOID VALVE EVAPORATIVE EMISSION PURGE SOLENOID VALVE GRN/BLK WIRE GRY/GRN WIRE HEATED OXYGEN SENSOR 1 IGN 1 VOLT IGN MODE SW IGNITION MODE SWITCH ILL INTAKE CAMSHAFT POSITION ACTUATOR PARK LOCK SOLENOID VALVE KEYLESS ENTRY CONTROL MODULE NCA WIRE PASSIVE START SW SIG 2 PASSIVE START SW SIG 2 LOW REFERENCE PASSIVE START SWITCH RAP RELAY 2 COIL CONTROL RUN/CRANK RUN/CRANK IGN 1 VOLT START IND START LED SIG STARTER RELAY TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 9 OF 9) TURBOCHARGER BYPASS SOLENOID VALVE TURBOCHARGER WASTEGATE SOLENOID VALVE UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/BLU WIRE VIO/YEL WIRE VOLT YEL WIRE

& RECEIVER ACC IGN VOLT ACTR LOCK CTRL ACTR UNLCK CTRL BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/BLK WIRE BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CENTER CONSOLE FRONT KEYLESS ENTRY ANTENNA CENTER CONSOLE REAR KEYLESS ENTRY ANTENNA COMPUTER DATA LINES SYSTEM CTRL DR LOCK CTRL DRIVER DOOR LOCK SWITCH DRV DR OPEN SW SIG IGNITION MODE SWITCH CHALLENGE ACTIVE SIG GMLAN SER DATA GMLAN SER DATA (+) 1 SEC IND CTRL GMLAN SER DATA - (1) GRN WIRE GRN/BLK WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HI INTR ANT SIG 1 HI INTR ANT SIG 2 HI INTR ANT SIG 3 HOOD STATUS B SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IGN 1 VOLT IGNITION MODE SWITCH IGNITION MODE SWITCH CHALLENGE ACTIVE SIG INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE LH HDLP LO BEAM CTRL LOCK SIG LOW INTR ANT SIG 1 LOW INTR ANT SIG 2 LOW INTR ANT SIG 3 LOW REF PASS DOOR LOCK SW LOCK CTRL PASS DOOR LOCK SW UNLOCK CTRL PASSENGER DOOR LOCK SWITCH POWER DISTRIBUTION SYSTEM RAP RLY 2 COIL CTRL RCV SIG RECEIVE SIG RECEIVER CTRL RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RH HDLP LO BEAM CTRL SW SIG 2 TRANS SIG UNLCK SIG VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED A/T) AUTOMATIC TRANSMISSION ASSEMBLY (9-SPEED A/T) BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK POS SENS LOW REF BRK POS SENS SIG COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA 1 (+) ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) GRN/YEL WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES IMS MODE SW LOW REF INSTRUMENT PANEL FUSE BLOCK KEY CAPTURE/COLUMN LOCK SHIFT POS SIG PARK LOCK SOL CTRL NCA WIRE PARK POSITION SWITCH POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (LOWER CENTER OF DASH) RED/GRN WIRE RED/GRY WIRE SERIAL SW MODE CTRL SW MODE CTRL BACKUP TRANS PARK/NEUTRAL SIG 1 TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR VIO/BLK WIRE W/ START/STOP SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE YEL/BLU WIRE

ACC IGN VOLT BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BLK WIRE BLK/GRY WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) COMPUTER DATA LINES SYSTEM GENERATOR GMLAN SER DATA GMLAN SER DATA - (1) GRN WIRE GRN/BLK WIRE HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED IGN 1 VOLT IGNITION MODE SWITCH KEYLESS ENTRY CONTROL MODULE LOGIC LOW REF RED WIRE RED/BLU WIRE RED/GRY WIRE STARTER MOTOR STARTER PINION SOLENOID ACTUATOR RELAY STARTER RELAY SW SIG 2 UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/BLU WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/BLK WIRE YEL/GRN WIRE YEL/VIO WIRE