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

5 VOLT REF A/C PRESS AMBIENT AIR AMBIENT LIGHT/SUNLOAD SENSOR (W/ ONSTAR) (TOP CENTER OF DASH) ANTI-THEFT SYSTEM BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/RED WIRE CLUTCH RLY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN MOTOR (MOUNTED TO COOLING FAN SHROUD) DATA (-) (3) ENG COOLANT ENGINE CONTROLS SYSTEM ENGINE CTRL MODULE FUSE SPLY VOLT 1 GMLAN SERIAL GRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE HEADLIGHTS SYSTEM LOGIC LOW REF 2 MAIN RLY MODE DOOR ACTUATOR NCA WIRE ORG/ WIRE RED/BLU WIRE RED/WHT WIRE SENS LO REF 1 SENS SIG TEMP SENS SIG TEMP SENS SIGNAL UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE WHT/RED WIRE YEL WIRE

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

5 VOLT REF A/C COMPRESSOR A/C PRESS AMBIENT AIR AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) ANTI-THEFT SYSTEM BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BRN/RED WIRE COMPUTER DATA LINES SYSTEM COOLING FAN MOTOR (MOUNTED TO COOLING FAN SHROUD) DATA (-) (3) ENG COOLANT FUSED SPLY VOLT 1 GMLAN SERIAL GRN WIRE GRN/VIO WIRE GRY WIRE HEADLIGHTS SYSTEM LOGIC LOW REF 2 MAIN RLY NCA WIRE RED/BLU WIRE RED/WHT WIRE SENS LO REF 1 SENS SIG TEMP SENS SIG TEMP SENS SIGNAL UNDERHOOD FUSE BLOCK VIO/BLU WIRE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE

BACKLIGHT LOW REF BACKLIGHT LOW REF DIMMING CTRL BACKUP LAMP CTRL BATT POS VOLT BATTERY FUSE BLOCK BK LVDS INFOTAINMENT DISPLAY SIG BLK WIRE BLK/GRN WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN/BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRANKSHAFT POS SENS REPLICATED SIG GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INSTRUMENT PANEL FUSE BLOCK LEFT FRONT DOOR SPEAKER LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOW SPD GMLAN SERIAL DATA 2 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) LVDS NAVIGATION DISPLAY DIMMING CTRL POWER SUPPLY TRANSFORMER RADIO RADIO KEYPAD BUTTON SIG RADIO VOLUME UP SIG RADIO KEYPAD DIMMING CTRL RADIO KEYPAD POWER SIG RADIO KEYPAD VOLT REF RADIO VOLUME DOWN SIG RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/YEL WIRE REGULATED CTRL RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RR SPEAKER (+) CTRL RR SPEAKER SIG (-) TOUCH INTERRUPT REQ SIG VIO/BLU WIRE VIO/WHT WIRE W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

BATT POS BG COAX WIFI ANTENNA COAX SIG BK COAX AM/FM BK USB USB SERIAL DATA BLK WIRE BLK/BRN WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (-) MICROPHONE 4 LOW REF COAX DATA ETHERNET BUS 4 (-) GRN/BLK WIRE GRN/BRN WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/WHT WIRE GRY/YEL WIRE HD/XM COAX CU LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LOGIC MIC (-) LOW REF MIC SIG MICROPHONE 1 FEEDBACK SIG MICROPHONE 1 SIG MICROPHONE 2 FEEDBACK SIG MICROPHONE 2 SIG MICROPHONE 3 FEEDBACK SIG MICROPHONE 3 SIG MICROPHONE 4 SIG NAVIGATION SYSTEM (REAR VIEW CAMERA CIRCUIT) RADIO RED WIRE RED/BRN WIRE RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE USB USB SERIAL VIO/BLU WIRE VOLT W/O S-BAND DIGITAL AUDIO SYSTEM WHT/BLU WIRE WHT/GRN WIRE WLAN WIRELESS COMMUNICATION ANTENNA YEL WIRE

AUDIO LOW REF AUDIO SIG + BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU/BLK WIRE BLU/GRN WIRE COMPUTER DATA LINES SYSTEM 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 LOW SPD GMLAN SERIAL DATA 2 MIC (-) LOW REF MIC SIG POWER SUPPLY TRANSFORMER RADIO RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO 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 VIO/YEL WIRE W/ ONSTAR W/ START/ STOP SYSTEM W/O ONSTAR W/O START STOP SYSTEM WHT/BLU WIRE WHT/GRN WIRE

AUDIO AMPLIFIER (CENTER OF DASH) 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 FEEDBACK SIG MICROPHONE 1 SIG MICROPHONE 2 FEEDBACK SIG MICROPHONE 2 SIG MICROPHONE 3 FEEDBACK SIG MICROPHONE 3 SIG MICROPHONE 4 LOW REF MICROPHONE 4 SIG RED WIRE RED/BLU WIRE RED/BRN WIRE RED/VIO 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 VIO/BLU WIRE VIO/BRN WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/GRY WIRE YEL/WHT WIRE

AUDIO LOW REF AUDIO SIG + BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM 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 LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOW SPD GMLAN SERIAL DATA 2 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MIC (-) LOW REF MIC SIG POWER SUPPLY TRANSFORMER RADIO RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/VIO 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 VIO/YEL WIRE W/ ONSTAR W/ START/ STOP SYSTEM W/O ONSTAR W/O START STOP SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

ACTIVE NOISE CANCELLATION MODULE BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/YEL WIRE BRN/BLU WIRE COMPUTER DATA LINES SYSTEM ENGINE CONTROL MODULE GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL 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 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 RED WIRE RED/BLU WIRE RED/BRN WIRE RED/VIO WIRE REMOTE ENABLE SIG REPLICATED SIG RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 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 VIO/BLU WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE IND BRN WIRE CHEVROLET COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER INFORMATION CENTER DISPLAY DRIVER SEAT BELT SWITCH DRIVER SEAT BELT BUCKLE DRIVER WINDOW MOTOR MODULE DRV SEAT BELT DRV SEAT BELT SW SIG ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) GRN WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/RED WIRE HDLP SW OFF SIG CTRL HDLP SW ON SIG CTRL HEAD HEADLAMP SWITCH HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) 1 BATTERY POSITIVE VOLT HI SPEED GMLAN HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR SW SIG LO SPD GMLAN SERIAL DATA LO SPD GMLAN SERIAL DATA 2 LOGIC LOW TIRE PRESSURE IND LR DR AJAR SW SIG NCA WIRE NETWORK BUS 3 NETWORK BUS 4 OFF AUTO ORG/BRN WIRE PARK PARK BRAKE APPLY SW SIG PARK BRAKE APPLY SW VOLT REF PARK BRAKE REL SW SIG PARK BRAKE REL SW VOLT REF PARK BRAKE SW SIG PARK BRAKE SW SPLY VOLT PARK BRAKE SWITCH PASS DR AJAR SW SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH RADIO RED/BLU WIRE RED/VIO WIRE RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SEAT BELT IND SERIAL DATA 2 SW LOW REF UNDERHOOD FUSE BLOCK W/ ELECTRONIC TRANS RANGE SELECTOR SYSTEM W/O ELECTRONIC TRANS RANGE SELECTOR SYSTEM WHT WIRE WHT/VIO WIRE YEL WIRE YEL/RED WIRE