GMC Terrain II (2017-2021) (left of steering column) Wiring diagrams

BLK WIRE BLU/PPL WIRE BLU/YEL WIRE DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT RECLINE MOTOR GRN/BLU WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK PWR SEAT FUSE RED/BRN WIRE RWD UP DN YEL WIRE YEL/BLU WIRE

BATT POS VOLT BLK WIRE BLU/GRN WIRE BLU/PPL WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT MEMORY CONTROL MODULE FORWARD SW SIG FRONT VERTICAL DWN SW SIG FRONT VERTICAL UP SW SIG GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/GRN WIRE HORIZONTAL MTR SENS SIG HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LOCAL INTERCONNECT NETWORK BUS 8 LOW SPEED GMLAN SERIAL DATA LR HAPTIC SEAT MTR CTRL LUM FUSE MEM SEAT SW SET SIG MEM SEAT SW SIG (1) MEM SENS HI REF (2) MSM FUSE NAVIGATION SYSTEM PWR SEAT FUSE REAR BODY FUSE BLOCK REAR VERTICAL DWN SW SIG REAR VERTICAL UP SW SIG REARWARD SW SIG RECLINE FORWARD SW SIG RECLINE MTR POS SENS SIG RECLINE REARWARD SW SIG RED/BRN WIRE RED/GRN WIRE RR HAPTIC SEAT MTR CTRL RWD UP DOWN VERTICAL MTR POS SENS SIG VERTICAL MTR SENS SIG WHT WIRE WHT/BLK WIRE WHT/RED WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PPL WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRV HEATED BACK ELEMENT CTRL DRV HEATED BACK NTC SIG DRV HEATED SEAT ELEMENT CTRL DRV HEATED SEAT ELEMENT LO REF DRV HEATED SEAT NTC LO REF DRV HEATED SEAT NTC SIG FRONT SEAT HEATING CONTROL MODULE FRT HT SW FUSE GRN/BLU WIRE GRY/BLK WIRE HOT AT ALL TIMES HTD/SEAT FUSE INSTRUMENT PANEL FUSE BLOCK LOCAL INTERCONNECT N/W SERIAL DATA BUS 2 NCA WIRE PASS HEATED BACK ELEMENT CTRL PASS HEATED BACK NTC LO REF PASS HEATED BACK NTC SIG PASS HEATED SEAT ELEMENT CTRL PASS HEATED SEAT ELEMENT LO REF PASS HEATED SEAT NTC LO REF PASS HEATED SEAT NTC SIG RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE UNDERHOOD FUSE BLOCK WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/GRY WIRE

BACK SWITCH BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/PPL WIRE COMPUTER DATA LINES SYSTEM CUSHION, BACK SWITCH DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRIVER SEAT HEATING SWITCH DRV HEATED BACK NTC SIG DRV HEATED SEAT ELEMENT CTRL DRV HEATED SEAT ELEMENT LO REF DRV HEATED SEAT NTC LO REF DRV HEATED SEAT NTC SIG DRV SEAT VENT MOTOR CTRL 1 FRONT SEAT HEATING CONTROL MODULE FRT HT SW FUSE GRN/BLU WIRE GRN/PPL WIRE GRN/WHT WIRE GRY/BLK WIRE HIGH TEMP IND HOT AT ALL TIMES HTD/SEAT FUSE ILL INSTRUMENT PANEL FUSE BLOCK LOCAL INTERCONNECT N/W SERIAL DATA BUS 2 LOW TEMP IND MED TEMP IND NCA WIRE PASS HEATED BACK NTC LO REF PASS HEATED BACK NTC SIG PASS HEATED SEAT ELEMENT CTRL PASS HEATED SEAT ELEMENT LO REF PASS HEATED SEAT NTC LO REF PASS HEATED SEAT NTC SIG PASS SEAT VENT MOTOR CTRL 1 PPL/WHT WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE UNDERHOOD FUSE BLOCK WHT/BLU WIRE WHT/GRY WIRE YEL/GRY 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 POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU/WHT WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DEFOGGER, EXTERIOR LIGHTS SYSTEMS DOWN DRIVER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW SWITCH DRV MIR MTR COMMON CTRL DRV MIR MTR FOLD IN CTRL DRV MIR MTR FOLD OUT CTRL DRV MIR MTR RH (+) LH (-) CTRL DRV MIR MTR UP (+) DOWN (-) CTRL DRV MIR POSITION SENS 5 VOLT REF DRV MIR POSITION SENS LH (-) RH (+) SIG DRV MIR POSITION SENS LO REF DRV MIR POSITION SENS UP (+) DOWN (-) SIG FT WINDOW FUSE GRN/WHT WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT LEFT TURN SIGNAL REPEATER LAMP LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 8 LOGIC MIRROR DIMMING MIRRORS SYSTEM NAVIGATION SYSTEM OFF OSRVM FUSE PPL/BLU WIRE PPL/RED WIRE PPL/YEL WIRE RED/BRN WIRE RIGHT WHT/BRN WIRE WHT/YEL WIRE YEL/BRN WIRE YEL/WHT WIRE

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INSTRUMENT PANEL FUSE BLOCK IPC USB FUSE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOW SPD GMLAN SERIAL DATA 2 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MIC SIG AUDIO SIG MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL WIRE RED/YEL WIRE REF REGULATED CTRL REMOTE ENABLE SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT MOBILE TELEPHONE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) SERIAL DATA (-) 9 SERIAL DATA (-) 9 BACKUP LAMP CTRL SERIAL DATA (-) 9 SERIAL DATA (+) 9 SERIAL DATA COMM ENABLE SIG SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU/BLK WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 GRN/WHT WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INSTRUMENT PANEL FUSE BLOCK IPC USB FUSE LOW SPD GMLAN SERIAL DATA 2 MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG MIC SIG AUDIO SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL WIRE RED/YEL WIRE REF REGULATED CTRL RIGHT FRONT MOBILE TELEPHONE MICROPHONE SERIAL DATA (-) 9 SERIAL DATA (-) 9 BACKUP LAMP CTRL SERIAL DATA (-) 9 SERIAL DATA (+) 9 SERIAL DATA COMM ENABLE SIG SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT/BLU WIRE WHT/GRN WIRE

BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLU/BRN WIRE BLU/YEL WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DISABLE SW SIG DRIVER INFORMATION CENTER DISPLAY DSP HMI FUSE FRT PARKING LEFT/RIGHT/MID SENS LF SUPPLEMENTAL OBJECT SENS SIG FRT PARKING FRT PARKING SENS LOW REF FUSE 3 GMLAN SER DATA (-) (2) GND REAR PARK ASSIST DISABLE SIG GRN WIRE GRN/BRN WIRE GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LED DISABLE SIG LEFT CORNER SENS FRT PARKING LEFT MID SENS LEFT FRONT MIDDLE PARKING ASSIST SENSOR LEFT FRONT OUTER PARKING ASSIST SENSOR LEFT FRONT SIDE PARKING ASSIST SENSOR LEFT REAR MIDDLE PARKING ASSIST SENSOR LEFT REAR OUTER PARKING ASSIST SENSOR LO SPD GMLAN SER DATA LOGIC LR CORNER OBJECT SENS SIG LR MIDDLE OBJECT SENS SIG OBJECT SENS CTRL OBJECT SENS LOW REF PARKING ASSIST CONTROL MODULE (RIGHT SIDE OF LUGGAGE AREA) PARKING ASSIST DISABLE SWITCH PARKING ASSIST IND PARKING ASSIST ON/OFF SWITCH POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (W/ START/STOP SYSTEM) (LOWER CENTER OF DASH) PPL/GRY WIRE PPL/WHT WIRE RED/BLU WIRE RED/GRY WIRE RED/YEL WIRE RIGHT FRONT MIDDLE PARKING ASSIST SENSOR RIGHT FRONT OUTER PARKING ASSIST SENSOR RIGHT FRONT SIDE PARKING ASSIST SENSOR RIGHT REAR MIDDLE PARKING ASSIST SENSOR RIGHT REAR OUTER PARKING ASSIST SENSOR RR CORNER OBJECT SENS SIG RR MIDDLE OBJECT SENS SIG W/ START/STOP SYSTEM W/O START/STOP SYSTEM WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/PPL WIRE YEL/WHT WIRE

BACKUP LAMP BACKUP LAMP CONTRL BATT POS VOLT BATTERY FUSE BLOCK BATTERY SAVER RELAY BLK WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) CAMERA LO REF CAMERA SIG (-) CAMERA SIG OG CHEVROLET COAX COMPUTER DATA LINES SYSTEM CONTROL DSP HMI FUSE FUSE 3 GMC GRN/WHT WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INFO DISPLAY MODULE (CENTER OF DASH) INSTRUMENT PANEL FUSE BLOCK ISRVM FUSE LIN SERIAL DATA BUS 5 LO SPEED GMLAN SERIAL DATA 2 LVDS BK INFOTAINMENT DISPLAY SIG NCA WIRE POWER SUPPLY TRANSFORMER PPL/GRY WIRE RADIO RD COAX REAR VIEW CAMERA (CENTER OF LIFTGATE) RED WIRE RED/BLU WIRE RED/GRY WIRE REGULATED CTRL UNDERHOOD FUSE BLOCK W/ ELECTRONIC TRANSMISSION RANGE SELECT W/ ENGINE START/ STOP) W/O ELECTRONIC TRANSMISSION RANGE SELECT W/O ENGINE START/ STOP) WHT/BLU WIRE