GMC Terrain II (2017-2021) power supply transformer Wiring diagrams

BATTERY FUSE BLOCK BCM 2 FUSE BCM 6 FUSE BLK WIRE BLU WIRE BLU/GRY WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) COMPUTER DATA LINES SYSTEM CTRL DRIVER MODE SELECT SWITCH FUSE 3 GRN/BLU WIRE GRY/PPL WIRE HIGH SPEED GMLAN SERIAL DATA (+) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INSTRUMENT PANEL FUSE BLOCK LOGIC NETWORK BUS 2 PARK LOCK SOL CTRL PARK POSITION SWITCH POWER SUPPLY TRANSFORMER PPL/BLK WIRE PPL/GRN WIRE PPL/YEL WIRE PRESS BRAKE RAP RLY COIL RAP RLY COIL CTRL RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE SHIFT POS SIG SHIFT SELECT SWITCH PERFORMANCE SIG SPLY VOLT 2 SPLY VOLT 2 BATT POS VOLT TAP UP/TAP DOWN SW SIG TCM FUSE TCM/ECM FUSE TOW/HAUL SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR UNDERHOOD FUSE BLOCK UP/DOWN TRANSMISSION MANUAL SHIFT SWITCH W/O START/STOP SYSTEM W/ START/STOP SYSTEM WHT WIRE WHT/PPL WIRE

ACC WAKEUP SERIAL DATA BATT POS VOLT BATTERY FUSE BLOCK BCM 2 FUSE BCM 6 FUSE BLK WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRY WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BUS 2 COIL CTRL COMPUTER DATA LINES SYSTEM DRIVE MODE SELECT SWITCH E SHIFT FUSE FUSE 3 GRN/BLU WIRE GRY/PPL WIRE HI SPD GMLAN SER DATA (+) 3 HI SPD GMLAN SER DATA (-) 7 HI SPD GMLAN SER DATA (-) 7 ACC WAKEUP SERIAL DATA HI SPD GMLAN SER DATA (-) 7 BATT POS VOLT HI SPD GMLAN SER DATA - HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INSTRUMENT PANEL FUSE BLOCK LOGIC NETWORK NETWORK BUS 2 PARK LOCK SOL CTRL PARK POSITION SWITCH POWER SUPPLY TRANSFORMER PPL/BLK WIRE PPL/GRN WIRE PPL/YEL WIRE PRESS BRAKE RAP RLY RAP RLY COIL CTRL RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT SHIFT POS SIG SHIFT SELECT SW PERFORMANCE SIG SIG GND SPLY TAP UP/TAP DOWN SW SIG TOW/HAUL SWITCH TRANSMISSION RANGE SELECTOR CONTROLS TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LEVER POSITION INDICATOR TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR UNDERHOOD FUSE BLOCK UP/DOWN TRANSMISSION MANUAL SHIFT SWITCH VAR/ FUNC FUSE VOLT 2 WHT WIRE WHT/PPL 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

"CHECK ENGINE" IND CTRL ABS IND. AFL IND AIR BAG IND BATT POS VOLT BATT POSITIVE VOLT BATTERY FUSE BLOCK BK USB BLK WIRE BRAKE IND BRN/WHT WIRE CHARGING IND COMPUTER DATA LINES SYSTEM CRUISE IND DOOR LOCK IND DOWN DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE ENGINE OIL PRESSURE IND FORWARD COLLISION ALERT LED CTRL FRONT FOG LAMP IND FUEL GAUGE FUSE 3 GLOW PLUG IND GRN/BLK WIRE GRN/BRN WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/PPL WIRE GRY/YEL WIRE HEAD-UP DISPLAY SIG HIGH BEAM ASSISTANT IND HIGH BEAM LAMP IND HILL DESCENT CONTROL IND HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK IPC USB FUSE KM/H IND LANE KEEPING ASSIST IND LEFT TURN IND LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 12 LOGIC LOW FUEL IND LOW SPD GMLAN SERIAL DATA LOW TIRE PRESSURE IND LOW WASHER FLUID IND CTRL MALFUNCTION IND MOST CTRL MOST SERIAL DATA (+) MPH IND NAVIGATION SYSTEM PARK BRAKE IND PARK LAMPS IND POWER SUPPLY TRANSFORMER PPL PPL/GRN WIRE REAR FOG LAMP IND RED/BRN WIRE RED/GRY WIRE REFLECTED LED DISPLAY DIMMING CTRL REGULATED CTRL RIGHT RIGHT STEERING WHEEL CONTROLS SWITCH RIGHT TURN IND SEAT BELT IND SECURITY IND SEEK DOWN SEEK UP SERVICE PARK BRAKE IND SPEEDOMETER TACHOMETER TRACTION OFF IND UNDERHOOD FUSE BLOCK UP LEFT USB USB DRIVE DATA CONNECTOR VAR/ FUNC FUSE VEHICLE AHEAD IND VOL - VOL + SEL VSC IND VSC OFF IND W/ START/STOP SYSTEM W/O START/STOP SYSTEM WAIT TO START INDICATOR CONTROL WHT WIRE WHT/GRN WIRE WHT/PPL WIRE WIPER/ WASHER SYSTEM

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 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 IPC USB FUSE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOW SPD GMLAN SERIAL DATA 2 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MIC SIG AUDIO SIG MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL 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 SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU/BLK WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 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 IPC USB FUSE LOW SPD GMLAN SERIAL DATA 2 MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG MIC SIG AUDIO SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL 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 SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT/BLU WIRE WHT/GRN WIRE

BACKLIGHT LOW REF BACKLIGHT LOW REF DIMMING CTRL BACKUP LAMP CTRL BATT POS VOLT BATTERY FUSE BLOCK 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 FUSE 3 GRN WIRE GRN/BLK WIRE GRN/WHT WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/PPL WIRE GY LVDS INFOTAINMENT DISPLAY SIG HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED INSTRUMENT PANEL FUSE BLOCK IPC USB FUSE 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 PPL/BLU WIRE PPL/WHT WIRE 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 RDO FUSE 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 (-) SWC FUSE TOUCH INTERRUPT REQ SIG W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BRN/BLU WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 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 IPC USB FUSE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LOW SPD GMLAN SERIAL DATA 2 LR SPEAKER (+) CTRL LR SPEAKER SIG (-) MIC SIG AUDIO SIG MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL 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 SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE

AMPLIFIER FUSE BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRY WIRE BLU/BLK WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CAMERA SIGNAL 2 (PINS: 16 TO 29 NOT USED) COMPUTER DATA LINES SYSTEM DSP HMI FUSE FUSE 3 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 IPC USB FUSE LOW SPD GMLAN SERIAL DATA 2 MIC (-) LOW REF MIC LOW REF AUDIO LOW REF MIC SIG MIC SIG AUDIO SIG NAVIGATION SYSTEM NETWORK SERIAL DATA BUS 5 POWER SUPPLY TRANSFORMER PPL/YEL WIRE RADIO RDO FUSE RED/BLU WIRE RED/BRN WIRE RED/GRY WIRE RED/PPL 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 SWC FUSE W/ ONSTAR W/O ONSTAR W/ START/ STOP SYSTEM W/O START STOP SYSTEM WHT/BLU WIRE WHT/GRN WIRE

BACKUP LAMP BACKUP LAMP CONTRL BATT POS VOLT BATTERY FUSE BLOCK BATTERY SAVER RELAY BLK WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) CAMERA LO REF CAMERA SIG (-) CAMERA SIG OG CHEVROLET COAX COMPUTER DATA LINES SYSTEM CONTROL DSP HMI FUSE FUSE 3 GMC GRN/WHT WIRE GRY/BRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INFO DISPLAY MODULE (CENTER OF DASH) INSTRUMENT PANEL FUSE BLOCK ISRVM FUSE LIN SERIAL DATA BUS 5 LO SPEED GMLAN SERIAL DATA 2 LVDS BK INFOTAINMENT DISPLAY SIG NCA WIRE POWER SUPPLY TRANSFORMER PPL/GRY WIRE RADIO RD COAX REAR VIEW CAMERA (CENTER OF LIFTGATE) RED WIRE RED/BLU WIRE RED/GRY WIRE REGULATED CTRL UNDERHOOD FUSE BLOCK W/ ELECTRONIC TRANSMISSION RANGE SELECT W/ ENGINE START/ STOP) W/O ELECTRONIC TRANSMISSION RANGE SELECT W/O ENGINE START/ STOP) WHT/BLU WIRE