GMC Terrain II (2017-2021) red/grn Wiring diagrams

1.6L TURBO DIESEL 1.5L TURBO ACCESSORY WAKEUP SERIAL DATA BLK WIRE BLU/BLK WIRE BLU/BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY E SHIFT FUSE GRY/GRN WIRE HI SPD GMLAN SER DATA (+) 3 HI SPD GMLAN SER DATA (-) 7 HI SPD GMLAN SER DATA (-) 7 ACCESSORY WAKEUP SERIAL DATA HI SPD GMLAN SER DATA (-) 7 BATT POS VOLT HOT W/ IGNITION MAIN RELAY ENERGIZED HOT W/ REDUCTANT CONTROL MODULE RELAY 2 ENERGIZED INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA 2 NOX SOOT FUSE PPL/BLU WIRE PPL/GRN WIRE PPL/YEL WIRE RED/BRN WIRE RED/GRN WIRE RUN/CRANK IGNITION 1 VOLT TRANSMISSION RANGE SELECTOR CONTROLS UNDERHOOD FUSE BLOCK UP/DOWN TRANSMISSION MANUAL SHIFT SWITCH VAR/FUNC FUSE WHT WIRE

AUTOMATIC TRANSMISSION ACCUMULATOR SOLENOID VALVE AUTOMATIC TRANSMISSION ASSEMBLY BLK/BRN WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) GRN/GRY WIRE GRN/PPL WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (+) (3) IGN MODE SW MODE CTRL BACKUP IMS MODE SW LO REF NCA WIRE PPL PPL/BLK WIRE PPL/WHT WIRE PPL/YEL WIRE RED/GRN WIRE TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INPUT/ INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION INTERMEDIATE SHAFT SPEED SENSOR TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK VALVE POSITION SWITCH W/ ETRS WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE

5 VOLT REF A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE AUXILIARY HEATER CTRL BATT POS BATT POS VOLT BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLOWER MOTOR BLOWER MTR SPD CTRL BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BLWR MTR BRN/GRN WIRE BRN/PPL WIRE COMPUTER DATA LINES SYSTEM DATA BUS 9 DEFOGGER SYSTEM DRIVER INFORMATION CENTER DISPLAY DSP HMI FUSE ELEC VARIABLE DISPLACEMENT CTRL ELEC VARIABLE DISPLACEMENT SPLY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND FUSE 3 FUSE 4 FUSE 6 GRN WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED HUMIDITY SENS SIG HUMIDITY TEMP SENS SIG HVAC BLWR FUSE HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC FUSE INSIDE AIR TEMP SENS SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA LOWER RIGHT FRONT OF ENGINE) POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (W/ START/STOP SYSTEM) (LOWER CENTER OF DASH) PPL/GRN WIRE REAR DEFOG RLY CTRL RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE REGULATED CTRL RUN/CRANK IGNITION 1 VOLT SOLAR SENS DRV SIG SOLAR SENS LOW REF SPD CTRL TEMP SENS LOW REF UNDERHOOD FUSE BLOCK VAR/FUNC FUSE VIO WIRE VOLT W/ START/STOP SYSTEM W/O START/STOP SYSTEM WINDSCREEN TEMP SENS SIG WINDSHIELD TEMPERATURE, INSIDE MOISTURE SENSOR YEL WIRE YEL/BLU WIRE YEL/RED WIRE

A/C COMPRESSOR CLUTCH RELAY A/C FUSE A/C IND A/C REFRIGERANT PRESSURE SENSOR A/C SWITCH AUTO IND AUTO SWITCH AUXILIARY COOLANT PUMP RELAY AUXILIARY HEATER COOLANT PUMP AUXILIARY HTR CTRL BATT POS VOLT BLK WIRE BLK/GRN WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/RED WIRE BUS 9 SER DATA GND COMPUTER DATA LINES SYSTEM DEFROST, LOWER AIR OUTLET IND DEFROST, LOWER AIR OUTLET SWITCH ECM FUSE ELECTRICAL AUXILIARY HEATER (LEFT OF BLOWER MOTOR) ENG/ COOL/PUMP FUSE ENGINE CONTROLS IGNITION RELAY FAN DOWN SWITCH FAN UP SWITCH FLEX/FUEL FUSE FUSE 4 GRN WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE HOT AT ALL TIMES HVAC CONTROLS IGNITION 1 VOLT LEFT TEMPERATURE DOWN SWITCH LEFT TEMPERATURE UP SWITCH LOGIC LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH PPL/BLU WIRE PPL/GRN WIRE RECIRCULATION IND RECIRCULATION SWITCH RED WIRE RED/BLU WIRE RED/GRN WIRE RIGHT TEMPERATURE DOWN SWITCH WINDSHIELD DEFROST SWITCH RIGHT TEMPERATURE UP SWITCH START STOP IND START/ STOP SWITCH SYNC IND SYNC SWITCH UNDERHOOD FUSE BLOCK UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH VIO WIRE WHT/GRY WIRE WINDSHIELD DEFROST IND YEL/BLU WIRE

A/C EVAPORATOR TEMPERATURE SENSOR AIR INLET DR STEPPER MOTOR CTRL 1 AIR INLET DR STEPPER MOTOR CTRL 2 AIR INLET DR STEPPER MOTOR CTRL 3 AIR INLET DR STEPPER MOTOR CTRL 4 AIR RECIRCULATION DOOR ACTUATOR AIR TEMP DR STEPPER MOTOR PASS CTRL 1 AIR TEMP DR STEPPER MOTOR PASS CTRL 2 AIR TEMP DR STEPPER MOTOR PASS CTRL 3 AIR TEMP DR STEPPER MOTOR PASS CTRL 4 AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/GRN WIRE DR CTRL LOW REF ECM FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR EVAP CORE TEMP SENS SIG GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC MOTOR CTRL J121 (1.5L TURBO, 2.0L TURBO) LEFT AIR TEMPERATURE DOOR ACTUATOR MODE DOOR ACTUATOR MODE DR STEPPER MOTOR CTRL 1 MODE DR STEPPER MOTOR CTRL 2 MODE DR STEPPER MOTOR CTRL 3 MODE DR STEPPER MOTOR CTRL 4 ORG/ WIRE PPL/BLU WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE DOOR ACTUATOR TEMP DR STEPPER MOTOR CTRL 1 TEMP DR STEPPER MOTOR CTRL 2 TEMP DR STEPPER MOTOR CTRL 3 TEMP DR STEPPER MOTOR CTRL 4 UNDERHOOD FUSE BLOCK WHT WIRE WHT/PNK WIRE WHT/RED WIRE YEL WIRE YEL/GRN WIRE

ACTIVE NOISE CANCELLATION MODULE AUDIO AMPLIFIER BATT POSITIVE VOLT BLK WIRE BLU WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE CYB SEC FUSE DATA DATA BUS - GRN WIRE GRY/GRN WIRE GRY/PPL WIRE HEADLAMP LEVELING CONTROL MODULE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 2 LO SPD GMLAN SER DATA HI SPD GMLAN SER DATA (-) 2 HI SPD GMLAN SER DATA (-) 8 HI SPD GMLAN SER DATA (-) 8 LO SPD GMLAN SER DATA HI SPD GMLAN SER DATA (-) 9 HIGH SPEED BUS TERMINATING RESISTOR HIGH SPEED EXTENSION BUS 1 TERMINATING RESISTOR HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN LO SPD GMLAN SER DATA 2 MOST SER RED/GRN WIRE SER DATA (+) 2 SER DATA COMM ENABLE SERIAL DATA GATEWAY MODULE (CENTER OF DASH) W/ ONSTAR W/ PREMIUM BRANDED AMPLIFIER W/O ONSTAR W/O PREMIUM BRANDED AMPLIFIER WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE YEL WIRE

BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLU/PPL WIRE BRN/PPL WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR FUSE 6 GRN WIRE GROUND DISTRIBUTION SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC CONTROLS HVAC FUSE INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA MIR/DEFOG FUSE PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS REAR DEFOGGER GRID REAR DEFOGGER IND REAR DEFOGGER RELAY REAR DEFOGGER RLY CTRL REAR DEFOGGER SWITCH RED WIRE RED/GRN WIRE RR/WDO/DEFOG FUSE UNDERHOOD FUSE BLOCK

AMBIENT LIGHT SENSOR SIG AMBIENT LIGHT/ SUNLOAD SENSOR AUTO BATTERY POSITIVE VOLTAGE BCM 1 FUSE BCM 3 FUSE BCM 4 FUSE BLK WIRE BLK/GRN WIRE BLU WIRE BLU/GRY WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/PPL WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DIMMER SW HI BEAM SIG DRL RLY CTRL FOG LAMP RLY CTRL FRONT FOG LAMP SW SIG FRONT FOG LAMP SWITCH GRN/BRN WIRE GRN/GRY WIRE GROUND GRY/BRN WIRE HDLP AUTO HI BEAM DIM CTRL HDLP HI BEAM RLY CTRL HDLP SW FLASH TO PASS SIG HDLP SW OFF SIG CTRL HDLP SW ON SIG HDLP SW PARK LAMP SIG HEAD HEADLAMP SWITCH HI SPD GMLAN SERIAL DATA HOT AT ALL TIMES HVAC CONTROL MODULE (TOP CENTER OF DASH) INSTRUMENT PANEL FUSE BLOCK LEFT LOW BEAM SPLY CTRL LEFT PARK LAMP CTRL LOW REFERENCE OFF PARK PPL/GRY WIRE REAR FOG LAMP REAR FOG LAMP SW SIG REAR FOG LAMP SWITCH RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RIGHT LOW BEAM SPLY CTRL RIGHT PARK LAMP CTRL RR FOG LAMP CTRL TURN SIGNAL/ MULTI-FUNCTION SWITCH WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/PPL WIRE YEL WIRE YEL/BRN WIRE YEL/GRY WIRE

A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR SOLENOID VALVE BATT POS BATT POS VOLT BATTERY FUSE BLOCK BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLOWER MOTOR BLOWER MTR SPD CTRL BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BLWR MTR BRN/GRN WIRE BRN/PPL WIRE COMPUTER DATA LINES SYSTEM DATA BUS 9 DEFOGGER SYSTEM DRIVER INFORMATION CENTER DISPLAY DSP HMI FUSE ELEC VARIABLE DISPLACEMENT CTRL ELEC VARIABLE DISPLACEMENT SPLY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND FUSE 3 GRN WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BRN WIRE GRY/GRN WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED HVAC BLWR FUSE HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC FUSE INSIDE AIR TEMP SENS SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA LOWER RIGHT FRONT OF ENGINE) POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (W/ START/STOP SYSTEM) (LOWER CENTER OF DASH) PPL/GRN WIRE REAR DEFOG RLY CTRL RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE REGULATED CTRL RUN/CRANK IGNITION 1 VOLT SOLAR SENS DRV SIG SOLAR SENS LOW REF SPD CTRL UNDERHOOD FUSE BLOCK VAR/FUNC FUSE VOLT W/ START/STOP SYSTEM W/O START/STOP SYSTEM

A/C EVAPORATOR TEMPERATURE SENSOR AIR INLET DR STEPPER MOTOR CTRL 1 AIR INLET DR STEPPER MOTOR CTRL 2 AIR INLET DR STEPPER MOTOR CTRL 3 AIR INLET DR STEPPER MOTOR CTRL 4 AIR RECIRCULATION DOOR ACTUATOR AIR TEMPERATURE DOOR ACTUATOR AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/GRN WIRE DR CTRL LOW REF ECM FUSE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR EVAP CORE TEMP SENS SIG GRN WIRE GRN/WHT WIRE GRY WIRE GRY/BRN WIRE GRY/RED WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (TOP CENTER OF DASH) HVAC MOTOR CTRL MODE DOOR ACTUATOR MODE DR STEPPER MOTOR CTRL 1 MODE DR STEPPER MOTOR CTRL 2 MODE DR STEPPER MOTOR CTRL 3 MODE DR STEPPER MOTOR CTRL 4 ORG/ WIRE RED/BLK WIRE RED/GRN WIRE RED/WHT WIRE TEMP DR STEPPER MOTOR CTRL 1 TEMP DR STEPPER MOTOR CTRL 2 TEMP DR STEPPER MOTOR CTRL 3 TEMP DR STEPPER MOTOR CTRL 4 UNDERHOOD FUSE BLOCK WHT/PNK WIRE WHT/RED WIRE YEL WIRE