GMC Terrain II (2017-2021) ground Wiring diagrams

ABS/TCS HILL DESCENT CTRL SW SIG ACC IGN VOLT ACC IND ADAPTIVE CRUISE CTRL GAP UP/DOWN SW SIG AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-THEFT SYSTEM BATTERY POSITIVE VOLT BATTERY POSITIVE VOLT INFOTAINMENT REGULATED CTRL BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 6 FUSE BCM 7 FUSE BCM 8 FUSE 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 CHARGE IND CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DIMMER SW LO REF DIMMER SW SIG DIMMIMG IND DOOR LOCKS, ANTI-THEFT SYSTEMS DRIVER DR LOCK SW UNLOCK SIG DRIVER MODE 5 INDICATOR CONTROL ENGINE START/ STOP EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS FRONT FOG LAMP SWITCH SIGNAL GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HAZARD LED DIMMING SIGNAL HAZARD SW LEFT TURN SIG HAZARD SW RIGHT TURN SIG HAZARD SW SIG HDLP AUTOMATIC HI BEAM DIM CTRL HDLP DIMMER SW HI BEAM SIG HDLP SW FLASH TO PASS SIG HORN SW SIG HDLP SW HDLP OFF SIG CTRL HDLP SW ON SIG HDLP SW PARK LAMPS SIG HEADLIGHTS SYSTEM HI SPD GMLAN SERIAL DATA (+) 1 REMOTE FUNCTION ACTR CTRL 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 INDICATOR DIMMING CTRL INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE LED BACKLIGHT DIMMING CTRL LIN BUS 15 PASSIVE START SW 2 LOW REF PASSIVE START SW SIG 2 POWER DISTRIBUTION SYSTEM PPL/BLK WIRE PPL/BLU WIRE PPL/YEL WIRE REAR FOG LAMP SWITCH SIGNAL REAR WINDOW WIPER SWITCH SIGNAL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE REMOTE FUNCTION ACTR TRANSMIT SIGNAL 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 TAP UP/TAP DOWN SWITCH SIGNAL TRANSMISSIONS SYSTEM VIO/YEL WIRE W/ STOP/START SYSTEM W/O STOP/START SYSTEM WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/PPL WIRE WHT/RED WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LOW SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ACCESSORY WAKEUP SERIAL DATA BACKUP LAMP CTRL BACKUP LAMP RELAY CONTROL BATTERY BATTERY CURRENT SENSOR BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BATTERY POSITIVE VOLTAGE BLK WIRE BLK/PPL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/PPL WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/GRN WIRE BRN/GRY WIRE BRN/PPL 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 SIGNAL CURRENT SENS CTRL CURRENT SENS LOW REF CURRENT SENS SIG 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 CONTROL DRIVER MODE 2 INDICATOR CONTROL DRIVER MODE 4 INDICATOR CTRL DRL RELAY CONTROL FOG LAMP RLY CTRL FRONT WINDSHIELD WIPER SW HIGH SIG LIFT GLASS/REAR COMPT LID MTR RELEASE CTRL FUSE 7 GRN WIRE GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/PPL WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/PPL WIRE GRY/VIO WIRE GRY/YEL WIRE HDLP HIGH BEAM RLY CTRL HEADLIGHTS SYSTEM HI SPEED GMLAN DATA BUS (-) 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 SWITCH SIGNAL KEY CAPTURE/COLUMN LOCK SHIFT POS SIG LED AMBIENT LIGHTING CONTROL 1 LED BACKLIGHT DIMMING CTR LF TURN SIG LAMP CTRL LH HEADLAMP LO BEAM CTRL LH PARK LAMP CTRL LH STOP/TAIL LAMP FEEDBACK SIG LIFTGATE AJAR SWITCH SIG 1 LOCAL INTERCONNECT NETWORK BUS 2 LOCAL INTERCONNECT NETWORK BUS 3 LOGISTIC MODE RLY CLOSE CTRL LOGISTIC MODE RLY OPEN CTRL LOW SPEED GMLAN SERIAL DATA PASS DOOR LOCK SW UNLOCK CTRL LR STOP LAMP CTRL LR TURN SIG LAMP CTRL PARK LAMP RELAY CONTROL PARK LOCK SOLENOID CTRL PASS DOOR LOCK SW LOCK CTRL POWER DISTRIBUTION SYSTEM PPL/BLK WIRE PPL/BLU WIRE PPL/GRY WIRE PPL/WHT WIRE PPL/YEL WIRE PUSH BUTTON START CHALLENGE ACTIVE RAP RELAY COIL CTRL REAR COMPT LID LAMP CTRL REAR FOG LAMP CTRL REAR LICENSE LAMP CTRL REAR WINDOW WASHER RELAY CTRL REAR WIPER MOTOR RELAY COIL CTRL RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RF TURN SIG LAMP CTRL RH HEADLAMP LO BEAM CTRL RH PARK LAMP CTRL RH STOP/TAIL LAMP FEEDBACK SIG RR CLOSURE HANDLE SW OPEN SIG LINEAR INTERCONNECT NETWORK DATA BUS 1 RR STOP LAMP CTRL RR TURN SIG LAMP CTRL RUN/CRANK RELAY COIL CTRL SERIAL DATA COMM ENABLE SHIFT INTERLOCK, TRANSMISSIONS SYSTEMS STARTING/CHARGING SYSTEM STARTING/CHARGING SYSTEM EXTERIOR LIGHTS SYSTEM STOP LAMP RELAY COIL CTRL TRAILER BRAKE APPLY SIGNAL TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM DOOR LOCKS, ANTI-THEFT SYSTEMS W/ STOP/START SYSTEM W/O STOP/START SYSTEM WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/PPL 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/GRY WIRE YEL/VIO WIRE

12 VOLT REF ALERT LED CTRL BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN WIRE CAM LGM VPM FUSE CHEVROLET COLLISION ALERT INDICATORS COMPUTER DATA LINES SYSTEM DIMMING CTRL DRIVE MODE SELECT SWITCH DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT MEMORY CONTROL MODULE FORWARD COLLISION ALERT LED CTRL FORWARD COLLISION ALERT WARNING SWITCH FRONT VIEW WINDSHIELD CAMERA FUSE 3 GMC GRN WIRE GRN/WHT WIRE GROUND GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LANE DEPARTURE WARNING DISABLE LANE DEPARTURE WARNING DISABLE SWITCH LANE DEPARTURE WARNING IND LANE DEPARTURE WARNING IND CTRL LEFT STEERING WHEEL CONTROLS SWITCH LOCAL INTERCONNECT NETWORK BUS 8 LOGIC LOW SPD GMLAN SERIAL DATA LOW SPD GMLAN SERIAL DATA 2 LR HAPTIC SEAT MOTOR CTRL POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (W/ START/STOP SYSTEM) (LOWER CENTER OF DASH) PPL/GRN WIRE RED WIRE RED/GRN WIRE RED/GRY WIRE REFLECTED LED DISPLAY DIMMING CTRL RR HAPTIC SEAT MOTOR CTRL SERIAL DATA COMM ENABLE STEERING WHEEL AIR BAG COIL SW SIG UNDERHOOD FUSE BLOCK UP/DOWN SW SIG VAR/FUNC FUSE W/ FORWARD COLLISION ALERT WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL/BRN WIRE

BATT POS VOLT BATT POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLU/GRN WIRE BLU/YEL WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DEFOGGER, EXTERIOR LIGHTS SYSTEMS DRIVER SEAT MEMORY CONTROL MODULE DRIVER SEAT MEMORY SWITCH GRN WIRE GRN/BLK WIRE GRN/PPL WIRE GRN/WHT WIRE GROUND GRY WIRE HOT AT ALL TIMES LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 8 LOGIC LOW SPD GMLAN SERIAL DATA MEM SEAT SW SET SIG MEM SEAT SW SIG (1) MEMORY 1 SWITCH MEMORY 2 SWITCH MSM FUSE NAVIGATION SYSTEM PASS MIR MTR COMMON CTRL PASS MIR MTR RH (+) LH (-) CTRL PASS MIR MTR UP (+) DOWN (-) CTRL PASS MIR POSITION SENS 5 VOLT REF PASS MIR POSITION SENS LH (-) RH (+) SIG PASS MIR POSITION SENS LO REF PASS MIR POSITION SENS UP (+) DOWN (-) SIG PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER OUTSIDE REAR VIEW MIRROR MOTOR PASSENGER SIDE OBJECT DETECTION INDICATOR PASSENGER WINDOW SWITCH PPL/WHT WIRE PPL/YEL WIRE REAR BODY FUSE BLOCK RED/BRN WIRE RED/GRN WIRE RIGHT TURN SIGNAL REPEATER LAMP SET SWITCH WHT WIRE WHT/BRN WIRE YEL WIRE YEL/PPL WIRE YEL/RED WIRE

BATT POS BATT POS VOLT BK BU COAX AM/FM BLK WIRE BUS 10 BUS 5 COAX COAX CU HD/XM COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY ETHERNET BUS 4 (-) GMLAN SERIAL GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE INFO DISPLAY MODULE (CENTER OF DASH) LOGIC LVDS LVDS GY NAVIGATION DISPLAY SIG RADIO RED/BLU WIRE RED/BRN WIRE SERIAL DATA USB USB BU USB SERIAL DATA USB RECEPTACLE USB SERIAL VOLT W/ ONSTAR W/O ONSTAR W/O ELECTRONIC TRANS RANGE SELECT W/ ELECTRONIC TRANS RANGE SELECT YEL WIRE

1.6L TURBO DIESEL AUDIO AMPLIFIER BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE CENTER INSTRUMENT PANEL SPEAKER COAX COMPUTER DATA ENGINE CONTROL MODULE ETHERNET BUS 6 (-) FRONT CENTER SPEAKER (+) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE LEFT FRONT DOOR SPEAKER LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LF TWEETER SPEAKER (+) LINES SYSTEM LOW SPEED GMLAN LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MICROPHONE 1 LOW REF MICROPHONE 1 SIG MICROPHONE 2 LOW REF MICROPHONE 2 SIG MICROPHONE 3 LOW REF MICROPHONE 3 SIG MICROPHONE 4 LOW RTN MICROPHONE 4 SIG PPL/BLU WIRE PPL/BRN WIRE RED WIRE RED/BLU WIRE RED/BRN WIRE RED/PPL WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RF TWEETER SPEAKER (+) RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SERIAL DATA 2 WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/WHT WIRE

BATT POS BATT POS VOLT BK BU COAX AM/FM BLK WIRE BRN/BLK WIRE BUS 10 BUS 5 COAX COAX CU HD/XM COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) GMLAN SERIAL GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE INFO DISPLAY MODULE (CENTER OF DASH) LOGIC LVDS LVDS GY NAVIGATION DISPLAY SIG RADIO RED/BLU WIRE RED/BRN WIRE SERIAL DATA USB USB BK USB SERIAL DATA USB RECEPTACLE USB SERIAL VOLT W/ ONSTAR W/O ONSTAR W/O ELECTRONIC TRANS RANGE SELECT W/ ELECTRONIC TRANS RANGE SELECT YEL WIRE

BATT POS BATT POS VOLT BK BU COAX AM/FM BLK WIRE BUS 10 BUS 5 COAX COAX CU HD/XM COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY ETHERNET BUS 4 (-) GMLAN SERIAL GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE INFO DISPLAY MODULE (CENTER OF DASH) LOGIC LVDS LVDS GY NAVIGATION DISPLAY SIG RADIO RED/BLU WIRE RED/BRN WIRE SERIAL DATA USB USB BU USB SERIAL DATA USB RECEPTACLE USB SERIAL VOLT W/ ONSTAR W/O ONSTAR W/O ELECTRONIC TRANS RANGE SELECT W/ ELECTRONIC TRANS RANGE SELECT YEL WIRE

1.6L TURBO DIESEL AUDIO AMPLIFIER BATT POS VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE CENTER INSTRUMENT PANEL SPEAKER COAX COMPUTER DATA ENGINE CONTROL MODULE ETHERNET BUS 6 (-) FRONT CENTER SPEAKER (+) GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/WHT WIRE LEFT FRONT DOOR SPEAKER LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LF TWEETER SPEAKER (+) LINES SYSTEM LOW SPEED GMLAN LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MICROPHONE 1 LOW REF MICROPHONE 1 SIG MICROPHONE 2 LOW REF MICROPHONE 2 SIG MICROPHONE 3 LOW REF MICROPHONE 3 SIG MICROPHONE 4 LOW RTN MICROPHONE 4 SIG PPL/BLU WIRE PPL/BRN WIRE RED WIRE RED/BLU WIRE RED/BRN WIRE RED/PPL WIRE REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RF TWEETER SPEAKER (+) RIGHT FRONT DOOR SPEAKER RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SERIAL DATA 2 WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/WHT WIRE

BATT POS BATT POS VOLT BK BU COAX AM/FM BLK WIRE BRN/BLK WIRE BUS 10 BUS 5 COAX COAX CU HD/XM COMPUTER DATA LINES SYSTEM DATA DATA 2 (+) DISPLAY ETHERNET BUS 4 (-) ETHERNET BUS 6 (-) GMLAN SERIAL GRN/BLU WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE INFO DISPLAY MODULE (CENTER OF DASH) LOGIC LVDS LVDS GY NAVIGATION DISPLAY SIG RADIO RED/BLU WIRE RED/BRN WIRE SERIAL DATA USB USB BK USB SERIAL DATA USB RECEPTACLE USB SERIAL VOLT W/ ONSTAR W/O ONSTAR W/O ELECTRONIC TRANS RANGE SELECT W/ ELECTRONIC TRANS RANGE SELECT YEL WIRE