GMC Terrain II (2017-2021) (under front of driver seat) Wiring diagrams

1.6L TURBO DIESEL ABS IND. ABS/TCS HILL DESCENT CTRL SW SIG BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/PPL WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRAKE BOOSTER VACUUM SENSOR BRAKE FLUID LEVEL SWITCH BRAKE IND BRAKE PEDAL POSITION SENSOR BRAKE POSITION SENS SIG BRAKE POSITION BRAKE VACUUM BRAKE VACUUM SENS SIG BRN WIRE COMPUTER DATA LINES SYSTEM DRIVE MODE SELECT SWITCH DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ESC IND ESC OFF GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRY/RED WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (+) (1) IND INSTRUMENT CLUSTER J122 (1.5L TURBO, 2.0L TURBO) LOGIC NCA WIRE PPL RIGHT REAR WHEEL SPEED SENSOR SIG GND TCS OFF TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/PPL 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

BACKUP LAMP CTRL BACKUP LAMP CTRL IGN BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR GRN/WHT WIRE HOT W/ IGNITION MAIN RELAY ENERGIZED INSIDE REAR VIEW MIRROR ISRVM FUSE LOGIC LOW REF MIRROR DIMMING PPL/GRY WIRE SIG UNDERHOOD FUSE BLOCK YEL/WHT WIRE

ACC IGN VOLT ACT CTRL ACTR LOCK CTRL ACTR UNLCK CTRL ACTUATOR 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/PPL 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 PUSH BUTTON START CHALLENGE ACTIVE SIG GMLAN SER DATA 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 IGN 1 VOLT IGNITION MODE SWITCH 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 PPL PPL/BLK WIRE PPL/YEL WIRE PUSH BUTTON START CHALLENGE ACTIVE SIG RAP RLY 2 COIL CTRL RCV SIG RECEIVE SIG RED/BRN WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RH HDLP LO BEAM CTRL SEC IND CTRL SW SIG 2 TRANS SIG UNLCK SIG WHT WIRE WHT/GRN WIRE WHT/PPL WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/PPL WIRE

2.0L TURBO, 1.5L TURBO 1.6L AMBIENT LIGHT/ SUNLOAD SENSOR BCM 8 FUSE BLK WIRE BLK/GRN WIRE BLU/BLK WIRE BLU/PPL WIRE BLU/WHT WIRE BRN/GRN WIRE BRN/YEL WIRE BUS 3 COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY ENGINE CONTROL MODULE ENGINE HOOD SWITCH GRN WIRE GRN/YEL WIRE GRY WIRE HOOD OPEN SW SIG HOT AT ALL TIMES HVAC CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LF DR AJAR LOGIC DRIVER WINDOW MOTOR MODULE LOGIC DRIVER WINDOW SWITCH LOW REF NCA WIRE NETWORK NETWORK BUS 3 PPL RED/BRN WIRE RED/WHT WIRE SERIAL DATA (+) (3) STATUS SIG SW SIG UNLOCK SIG WHT WIRE WHT/GRN WIRE WHT/PPL WIRE WHT/YEL WIRE YEL WIRE

ANT SIG HI ANT SIG LO BLK WIRE BLU WIRE BRN/GRN WIRE BRN/YEL WIRE DRIVER DOOR HANDLE KEYLESS ENTRY ANTENNA DRIVER EXTERIOR DOOR HANDLE ASSEMBLY DRIVER EXTERIOR DOOR HANDLE SWITCH DRV DR HANDLE SW SIG GRN WIRE GRN/BLK WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE KEYLESS ENTRY CONTROL MODULE (BEHIND LOWER RIGHT REAR TRIM PANEL) LEFT REAR EXTERIOR DOOR HANDLE SWITCH LEFT REAR EXTERIOR DOOR HANDLE ASSEMBLY LR DR HANDLE SW SIG NCA WIRE PASS DR HANDLE SW SIG PASSENGER DOOR HANDLE KEYLESS ENTRY ANTENNA PASSENGER EXTERIOR DOOR HANDLE ASSEMBLY PASSENGER EXTERIOR DOOR HANDLE SWITCH PPL PPL ANT SIG HI PPL/GRY WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT REAR EXTERIOR DOOR HANDLE ASSEMBLY RIGHT REAR EXTERIOR DOOR HANDLE SWITCH RR DR HANDLE SW SIG WHT/GRN WIRE YEL/GRY WIRE

"CHECK ENGINE" IND CTRL 1.6L TURBO DIESEL 1.6L TURBO DIESEL 2.0L TURBO, 1.5L TURBO 2.0L TURBO 2.0L TURBO, 1.5L TURBO AIR TEMPERATURE SENS SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/PPL WIRE BLK/WHT WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/PPL WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRN/GRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR MODULE ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR FUEL LEVEL SENSOR FUEL PUMP DRIVER CONTROL MODULE FUEL PUMP, LEVEL SENSOR ASSEMBLY GMLAN SERIAL DATA (+) 7 GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HIGH SPEED GMLAN SERIAL DATA (+) 7 J110 (2.0L TURBO, 1.5L TURBO) LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LF DR AJAR SW SIG LOGIC LOW REF LOW REF 2 LR DR AJAR SW SIG NETWORK BUS 3 NETWORK BUS 4 OIL LEVEL SWI SIG OIL PRESSURE SENS SIG PRIMARY FUEL LEVEL SENS SIG PRIMARY FUEL LEVEL SENSOR RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SEC SENS SIG SECONDARY FUEL LEVEL SENSOR SENS 2 LOW REF SENS LOW REF UNDERHOOD FUSE BLOCK WAIT TO START IND CTRL WHT WIRE WHT/RED WIRE YEL/BRN WIRE

2.0L TURBO, 1.5L TURBO 1.6L BATT POSITIVE VOLT BCM 1 FUSE BLK WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS 11 DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GMLAN SER DATA (-) (2) GMLAN SER DATA - (1) GRN/GRY WIRE GRN/PPL WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD OPEN HOOD STATUS B SIG HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE (UNDER CENTER CONSOLE) IMMOBILIZER CTRL IMMOBILIZER LOW REF INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOCAL INTERCONNECT LOCAL INTERCONNECT NETWORK SER DATA BUS 11 LOGIC NCA WIRE NETWORK SER RED/GRY WIRE SW SIG WHT WIRE YEL WIRE

B+ MIRROR MOTOR FOLD OUT CTRL BLK WIRE BLU WIRE BRN WIRE DEFOGGER SYSTEM 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 PASSENGER DRIVER SIDE OBJECT DETECTION INDICATOR DRIVER WINDOW SWITCH ELECTROCHROMIC MIRROR CIRCUIT EXTERIOR LIGHTS, DEFOGGER SYSTEMS FOLD IN CTRL FOLDING SWITCH GRN WIRE GRN/BLK WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT LEFT TURN SIGNAL REPEATER LAMP LOGIC MIRROR DIMMING MIRROR MOTOR NAVIGATION SYSTEM OFF OSRVM FUSE PASSENGER POWER DISTRIBUTION SYSTEM PPL PPL/YEL WIRE RED WIRE RED/BRN WIRE RIGHT WHT WIRE WHT/BRN WIRE YEL WIRE YEL/PPL WIRE

ABS FUSE 22 BATTERY POSITIVE VOLT BATTERY POSITIVE VOLTAGE BCM 4 FUSE BLK WIRE BLK/ORG WIRE BLU WIRE BLU/BLK WIRE BLU/PPL WIRE BLU/YEL WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRAKE FLUID LEVEL SENS SIG BRAKE FLUID LEVEL SWITCH BRAKE IND BRN WIRE COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DOOR AJAR IND 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/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GROUND 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 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 (-) 1 LO SPD GMLAN SERIAL DATA 2 LOGIC 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 (LOWER LEFT SIDE OF DASH) PASS DR AJAR SW SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH RADIO RED/BLU WIRE RED/PPL WIRE RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DR AJAR SW SIG SEAT BELT IND SERIAL DATA SERIAL DATA 2 SW LOW REF TIRE PRESSURE IND UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE WHT/PPL WIRE YEL WIRE YEL/RED WIRE