GMC Terrain II facelift (2021-2024) red/wht Wiring diagrams

BATTERY POSITIVE VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SENS SIG BRAKE PRESSURE MODULATOR BRN WIRE COMPUTER DATA LINES SYSTEM ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) GRN/GRY WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE GRY/RED WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HOT AT ALL TIMES LEFT FRONT WHEEL SPEED SENSOR LEFT REAR WHEEL SPEED SENSOR LF WHEEL SPD SENS CTRL LF WHEEL SPD SENS SIG LR PARK BRAKE MOTOR APPLY CTRL LR PARK BRAKE MOTOR LOW REF LR WHEEL SPD SENS CTRL LR WHEEL SPD SENS SIG NCA WIRE 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 RED/VIO WIRE RED/WHT WIRE RF WHEEL SPD SENS CTRL RF WHEEL SPD SENS SIG RIGHT FRONT WHEEL SPEED SENSOR RR PARK BRAKE MOTOR APPLY CTRL RR PARK BRAKE MOTOR LOW REF RR WHEEL SPD SENS CTRL RR WHEEL SPD SENS SIG SERIAL DATA COMM ENABLE SHIFT INTERLOCK SYSTEM UNDERHOOD FUSE BLOCK VIO WIRE WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

BATT POS VOLT BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ECM FUSE ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) GENERATOR GENERATOR FIELD DUTY CYCLE SIG GMLAN SERIAL DATA - 1 GRN/VIO WIRE GRY WIRE GRY/GRN WIRE INSTRUMENT CLUSTER LO SPD GMLAN LOGIC RED WIRE RED/BRN WIRE RED/WHT WIRE SERIAL DATA 2 SIG GND STARTER MOTOR UNDERHOOD FUSE BLOCK WHT WIRE

& RECEIVER ACC IGN VOLT ACTR LOCK CTRL ACTR UNLCK CTRL 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/VIO 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 IGNITION MODE SWITCH CHALLENGE ACTIVE SIG GMLAN SER DATA GMLAN SER DATA (+) 1 SEC IND CTRL 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 HOT AT ALL TIMES IGN 1 VOLT IGNITION MODE SWITCH IGNITION MODE SWITCH CHALLENGE ACTIVE SIG INSTRUMENT PANEL FUSE BLOCK 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 RAP RLY 2 COIL CTRL RCV SIG RECEIVE SIG RECEIVER CTRL RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER RH HDLP LO BEAM CTRL SW SIG 2 TRANS SIG UNLCK SIG VIO WIRE VIO/BLK WIRE VIO/YEL WIRE WHT WIRE WHT/GRN WIRE WHT/VIO WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/VIO WIRE

B+ VOLT BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRN WIRE CHEVROLET COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (LEFT REAR OF ENGINE COMPT) GRN/BLK WIRE GRN/VIO WIRE GRY WIRE GRY/BLK WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (1) PARK BRK RELEASE SW VOLT REF HI SPD GMLAN SERIAL DATA (-) (2) HI SPD GMLAN SERIAL DATA (-) 2 SER DATA COMM ENABLE HOT AT ALL TIMES INSTRUMENT CLUSTER LEFT PARK BRAKE ACTUATOR LH PARK BRK MTR APPLY CTRL LIN SERIAL DATA BUS 2 LOGIC PARK BRAKE APPLY SW VOLT REF PARK BRAKE SW SPLY VOLT PARK BRAKE SWITCH PARK BRK APPLY SW SIG PARK BRK RELEASE SW SIG PARK BRK SW SIG PARK IND RED/VIO WIRE RED/WHT WIRE RH PARK BRAKE MOTOR LOW REF LH PARK BRK MTR LOW REF RH PARK BRK MTR APPLY CTRL RIGHT PARK BRAKE ACTUATOR SERVICE PARK BRAKE IND UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLU WIRE YEL WIRE YEL/RED WIRE

BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BODY CONTROL MODULE BRN WIRE COOLING FAN MOTOR ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE EVAPORATIVE EMISSION VENT SOLENOID VALVE EXCEPT CALIFORNIA FRONT FOG LAMP RELAY FRONT SEAT HEATING CONTROL MODULE FUEL PUMP DRIVER CONTROL MODULE GENERATOR HORN RELAY LEFT HEADLAMP RELAY NCA WIRE POWER STEERING CONTROL MODULE REAR DEFOGGER RELAY RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RIGHT HEADLAMP RELAY STARTER MOTOR STARTER PINION SOLENOID ACTUATOR RELAY STARTER RELAY TO IGNITION MAIN RELAY (DIAGRAM 2 OF 9) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 3 OF 9) TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 5 OF 9) TO POWER SUPPLY TRANSFORMER (DIAGRAM 3 OF 9) TO REAR BODY FUSE BLOCK (DIAGRAM 5 OF 9) W/ START/STOP SYSTEM W/O START/STOP SYSTEM

6 SPEED A/T ACCY WAKEUP SER DATA AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT BLK WIRE BLU/BLK WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT MEMORY CONTROL MODULE ENGINE CONTROL MODULE FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 9) GRY/BRN WIRE HI SPD GMLAN SER DATA (+) 3 HVAC CONTROL MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INFOTAINMENT REGULATED CTRL INSTRUMENT PANEL FUSE BLOCK KEYLESS ENTRY CONTROL MODULE LEFT "C" PILLAR) LEFT REAR WINDOW SWITCH PASSENGER PRESENCE MODULE POWER SUPPLY TRANSFORMER (W/ START-STOP SYSTEM) (LOWER CENTER OF DASH) RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR WINDOW SWITCH RUN/CRANK IGN 1 VOLT STARTER ENABLE RLY CTRL STARTER RELAY TO INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 4 OF 9) TO RETAINED ACCESSORY POWER RELAY (DIAGRAM 9 OF 9) TRANSMISSION CONTROL MODULE TRANSMISSION RANGE SELECTOR CONTROLS UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/YEL WIRE W/ MEMORY W/ START/ STOP SYSTEM W/O MEMORY WHT WIRE YEL/VIO WIRE

ACTIVE NOISE CANCELLATION MODULE AUDIO AMPLIFIER BLK WIRE BLOWER MOTOR BODY CONTROL MODULE BRN WIRE CARGO ACCESSORY POWER RECEPTACLE DATA LINK CONNECTOR DRIVER SEAT LUMBAR SUPPORT SWITCH DRIVER SEAT MEMORY CONTROL MODULE DRIVER WINDOW MOTOR MODULE DRIVER WINDOW SWITCH FROM BATTERY FUSE BLOCK (DIAGRAM 1 OF 9) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 1 OF 9) FRONT SEAT HEATING CONTROL MODULE LEFT REAR SEAT HEATING SWITCH LEFT SIDE OBJECT SENSOR MODULE PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT LUMBAR SUPPORT SWITCH PASSENGER WINDOW SWITCH RAIN/ AMBIENT LIGHT SENSOR MODULE REAR BODY FUSE BLOCK REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR SEAT HEATING CONTROL MODULE RED WIRE RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RIGHT REAR SEAT HEATING SWITCH RIGHT SIDE OBJECT SENSOR MODULE SERIAL DATA GATEWAY MODULE SUNROOF CONTROL MODULE TO ACCESSORY DC/AC POWER INVERTER MODULE (DIAGRAM 6 OF 9) TRAILER BACKUP LAMPS RELAY W/ OBSTACLE DETECTION

ACCESSORY DC/AC POWER INVERTER MODULE BATT POS VOLT BLK WIRE BLU/BRN WIRE BLU/WHT WIRE FROM INSTRUMENT PANEL FUSE BLOCK (DIAGRAM 5 OF 9) FROM REAR BODY FUSE BLOCK (DIAGRAM 5 OF 9) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 1 OF 9) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 9) GRY/GRN WIRE LEFT TRAILER STOP/ TURN SIGNAL LAMP RELAY LIFTGATE CONTROL MODULE PARK LAMPS RELAY PHASE A DC TO AC INVERTER CTRL PHASE B REAR BODY FUSE BLOCK RED WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE REDUCTANT CONTROL MODULE RELAY 1 RIGHT TRAILER STOP/ TURN SIGNAL LAMP RELAY TRAILER CONNECTOR VIDEO PROCESSING CONTROL MODULE VIO WIRE W/ TRAILER BRAKE PROVISIONS W/O TRAILER BRAKE PROVISIONS YEL/GRY WIRE

BLK WIRE BLU WIRE BODY CONTROL MODULE BRN WIRE CENTER CONSOLE REAR USB RECEPTACLE CHG IND CTRL DRIVER SEAT HEATING SWITCH FAULT IND CTRL GMC GRN WIRE GRY/GRN WIRE INSTRUMENT PANEL ACCESSORY POWER RECEPTACLE INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LIFTGATE UNLATCH RELAY LOGIC MOBILE DEVICE WIRELESS CHARGER MODULE PASSENGER SEAT HEATING SWITCH PWR FSD CTRL RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RETAINED ACCESSORY POWER RELAY RIGHT STEERING WHEEL CONTROLS SWITCH STEERING WHEEL AIR BAG COIL VIO WIRE VOLT

BACKUP RLY CTRL BATT POS VOLT BLK WIRE BLU WIRE BLU/BRN WIRE BLU/WHT WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM EXTERIOR LAMPS CIRCUIT GRN/GRY WIRE GRN/VIO WIRE GRY/BRN WIRE HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (-) 1 HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK LEFT "C" PILLAR) LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LH RR TURN SIG LP CTRL RH RR TURN SIG LP CTRL RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RIGHT TRAILER STOP/ TURN SIGNAL LAMP RELAY TRAILER BACKUP LAMPS RELAY TRAILER BRK APPLY SIG TRAILER CONNECTOR (W/ TRAILER BRAKE PROVISIONS) (UNDER CENTER REAR OF VEHICLE) TRAILER CONNECTOR (W/O TRAILER BRAKE PROVISIONS) (UNDER CENTER REAR OF VEHICLE) UNDERHOOD FUSE BLOCK W/ TRAILER BRAKE PROVISIONS W/O TRAILER BRAKE PROVISIONS WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL/GRY WIRE