GMC Terrain II (2017-2021) (under left rear trim panel) Wiring diagrams

BATT POS VOLT BLK WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR DRIVER SIDE OBJECT DETECTION INDICATOR GRN WIRE GRY WIRE GRY/YEL WIRE HI SPD GMLAN SERIAL DATA (+) 5 HOT AT ALL TIMES LEFT SIDE OBJECT SENSOR MODULE LH SIDE OBJECT DETECTION LED CTRL LO SPD GMLAN SERIAL DATA PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER SIDE OBJECT DETECTION INDICATOR REAR BODY FUSE BLOCK RED WIRE RED/BRN WIRE RH SIDE OBJECT DETECTION LED CTRL RIGHT SIDE OBJECT SENSOR MODULE SBZA FUSE YEL WIRE

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

BLK WIRE BLU WIRE DRIVER SEAT LUMBAR SUPPORT MOTOR DRIVER SEAT LUMBAR SUPPORT SWITCH FORWARD/ HOT AT ALL TIMES LUM FUSE PPL REAR BODY FUSE BLOCK REARWARD RED/GRN WIRE

BACK SWITCH BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BRN/BLU WIRE CDST- VENT FUSE COMPUTER DATA LINES SYSTEM CUSHION, BACK SWITCH DR/SEAT/ VENT FUSE DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR DRV SEAT VENT MOTOR CTRL 1 GRN/PPL WIRE GRN/WHT WIRE GRY/BLK WIRE HIGH TEMP IND HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT ILL LOGIC LOW TEMP IND MED TEMP IND NCA WIRE PASS SEAT VENT MOTOR CTRL 1 PASSENGER BACK SEAT BLOWER MOTOR PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER CUSHION SEAT HEATING ELEMENT PASSENGER SEAT HEATING SWITCH PPL/BLK WIRE PPL/GRY WIRE PPL/WHT WIRE RED/YEL WIRE UNDERHOOD FUSE BLOCK WHT/BLU WIRE WHT/GRY WIRE

2 WAY BLK WIRE CENTER HIGH MOUNTED STOP LAMP CHEVROLET GMC W/ TRAILER BRAKE PROVISIONS W/O TRAILER BRAKE PROVISIONS DIFFERENTIAL CLUTCH PUMP DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT LUMBAR SUPPORT SWITCH GMC HANDS-FREE LIFTGATE SENSOR CONTROL MODULE LEFT BACKUP LAMP LEFT INNER TAIL/STOP LAMP LEFT LICENSE PLATE LAMP LEFT LIFTGATE TAILLAMP ASSEMBLY LEFT OUTER TAIL/ STOP LAMP LEFT OUTER TAIL/STOP LAMP LEFT REAR TURN SIGNAL LAMP LEFT SIDE OBJECT SENSOR MODULE LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY LIFTGATE CLOSE SWITCH LIFTGATE CONTROL MODULE LIFTGATE LATCH LIFTGATE UNLATCH SWITCH NCA WIRE PARKING ASSIST CONTROL MODULE POWER SUPPLY TRANSFORMER PPL REAR DEFOGGER GRID REAR DIFFERENTIAL CLUTCH CONTROL MODULE REAR FOG LAMP REAR SEAT HEATING CONTROL MODULE REAR VIEW CAMERA REAR WIPER MOTOR RIGHT BACKUP LAMP RIGHT INNER TAIL/STOP LAMP RIGHT LICENSE PLATE LAMP RIGHT LIFTGATE TAILLAMP ASSEMBLY RIGHT SIDE OBJECT SENSOR MODULE RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY SEAT MEMORY CONTROL MODULE TRAILER BACKUP LAMPS RELAY TRAILER CONNECTOR W/ FORWARD COLLISION ALERT W/ LED W/ MEMORY W/O LED W/O MEMORY W/ MEMORY W/O TERRAIN DENALI W/ TERRAIN DENALI

BATT POS VOLT BCM 8 FUSE BLK WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) COMPUTER DATA LINES SYSTEM DISPLAY INFORMATION CENTER DISPLAY GRN WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LG LATCH FUSE LIFT GLASS/REAR COMPARTMENT LID LIFTGATE AJAR SW SIG 1 LIFTGATE LATCH LIFTGATE UNLATCH RELAY LIFTGATE UNLATCH SWITCH LOGIC LOW SPD GMLAN SERIAL DATA LOW SPD GMLAN SERIAL DATA 2 PPL/GRY WIRE REAR CLOSURE HANDLE SW OPEN SIG RED/BLU WIRE RED/BRN WIRE YEL/BLU WIRE

3/4 OFF MAX 5 VOLT REF BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/PPL WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/GRY WIRE BLU/WHT WIRE BLU/YEL WIRE BRN WIRE BRN/RED WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY WIRE GRY/BLK WIRE GRY/PPL WIRE HANDS FREE CLOSURE RELEASE SENSOR LOW REF 1 HANDS FREE CLOSURE RELEASE SENSOR LOW REF 2 HANDS FREE CLOSURE RELEASE SENSOR SIG 1 HANDS FREE CLOSURE RELEASE SENSOR SIG 2 HANDS-FREE LIFTGATE SENSOR CONTROL MODULE ILL INTERIOR LIFTGATE CONTROL SWITCH LIFTGATE LATCH ASSEMBLY (BOTTOM CENTER OF LIFTGATE) LIFTGATE MOTOR ASSEMBLY (NEAR LEFT SIDE OF LIFTGATE) LIN SERIAL DATA BUS 18 LOW REF LOWER HANDS-FREE LIFTGATE SENSOR NCA WIRE REAR OPEN/ CLOSE SWITCH RED/GRN WIRE SENS SIG 1 SENS SIG 2 UPPER HANDS-FREE LIFTGATE SENSOR W/O SIDE ACTIVE SAFETY W/ SIDE ACTIVE SAFETY WHT WIRE WHT/GRY WIRE YEL WIRE

BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/RED WIRE BLU/PPL WIRE BLU/WHT WIRE COMPUTER DATA LINES SYSTEM GRN/BLU WIRE GRN/BRN WIRE GRN/WHT WIRE GRY WIRE HIGH HEAT IND HOT AT ALL TIMES ILL LEFT REAR BACK SEAT HEATING ELEMENT LEFT REAR CUSHION SEAT HEATING ELEMENT LEFT REAR SEAT HEATING SWITCH LOW HEAT IND LR CUSHION NTC LO REF LR CUSHION NTC SIG LR HTD SEAT CUSHION ELEMENT LO REF LR HTD SEAT ELEMENT CTRL LR HTD SEAT CUSHION ELEMENT CTRL BATT POS VOLT LR SEAT BACK NTC LO REF LR SEAT BACK NTC SIG MED HEAT IND NCA WIRE PPL/BLK WIRE REAR BODY FUSE BLOCK REAR SEAT HEATING CONTROL MODULE RED WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE RIGHT REAR BACK SEAT HEATING ELEMENT RIGHT REAR CUSHION SEAT HEATING ELEMENT RIGHT REAR SEAT HEATING SWITCH RR CUSHION NTC LO REF RR CUSHION NTC SIG RR HTD SEAT CUSHION ELEMENT LO REF RR HTD SEAT ELEMENT CTRL RR HTD SEAT CUSHION ELEMENT CTRL RR HTD/ SEAT 1 FUSE RR HTD/ SEAT 2 FUSE RR SEAT BACK NTC LO REF RR SEAT BACK NTC SIG SEAT BACK SWITCH SEAT CUSHION, BACK SWITCH SERIAL DATA BUS 2 WHT/BLK WIRE YEL WIRE YEL/BLK WIRE YEL/WHT WIRE

2.0L TURBO 1.5L TURBO 1.6L TURBO DIESEL ACCY WAKEUP SER DATA AUTOMATIC TRANSMISSION ASSEMBLY AUTOMATIC TRANSMISSION ASSEMBLY (6 SPEED A/T) BATT POS VOLT BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ECM, TCM FUSE ENGINE CONTROL MODULE (LEFT SIDE OF ENGINE COMPT) GMLAN SER DATA - (1) GRN/YEL WIRE GRY/BRN WIRE HI SPD GMLAN SER DATA (+) 3 HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT IGN SW MODE CTRL BACKUP IMS MODE SW LO CTRL IMS MODE SW LO REF INFOTAINMENT REGULATED CTRL NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (LOWER CENTER OF DASH) PPL/GRN WIRE PPL/YEL WIRE RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RLY CTRL STARTER PINION SOL RLY CTRL TRANS PARK/ NEUTRAL SIG 1 TRANS PARK/NEUTRAL SIG 1 TRANSMISSION CONTROL MODULE TRANSMISSION CONTROL MODULE (9 SPEED A/T) (FRONT OF TRANSMISSION) TRANSMISSION INTERNAL MODE SWITCH UNDERHOOD FUSE BLOCK VAR/ FUNC FUSE WHT WIRE WHT/BLU WIRE WHT/GRY WIRE YEL/BLK WIRE YEL/BLU WIRE YEL/PPL WIRE

BLK WIRE BLK/GRY WIRE BLU WIRE BLU/PPL WIRE BRN/BLU WIRE BRN/GRY WIRE DELAY SWITCH GRN/WHT WIRE GRY WIRE GRY/PPL WIRE HI LO HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK MIST OFF INT OSRVM FUSE PPL REAR WINDOW WASHER PUMP REAR WINDOW WASHER PUMP RELAY REAR WIPER MOTOR REAR WIPER RELAY REAR WIPER/WASHER SWITCH RED/BRN WIRE RR/WPR FUSE UNDERHOOD FUSE BLOCK WASH/PUMP FUSE WASHER SWITCH WHT/BLK WIRE WINDSHIELD WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WIPER SWITCH WINDSHIELD WIPER/WASHER SWITCH YEL WIRE YEL/BLU WIRE