Buick Envision I (2016-2018) power supply transformer Wiring diagrams

BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE CAMERA LOW REFERENCE CAMERA SIGNAL 2 COMPUTER DATA LINES SYSTEM DC DC TRANS FUSE DEVICE 2 SWITCHED VOLT GRILLE FRONT VIEW CAMERA GRN/WHT WIRE GRN/YEL WIRE GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE INSTRUMENT PANEL FUSE BLOCK LEFT SIDE VIEW CAMERA (AT LEFT OUTSIDE REAR VIEW MIRROR) LOW SPEED GMLAN SERIAL DATA LT BLU WIRE NCA WIRE ORG/ WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER REAR VIEW CAMERA RED WIRE RED/BLU WIRE RED/GRN WIRE RIGHT SIDE VIEW CAMERA (AT RIGHT OUTSIDE REAR VIEW MIRROR) SIGNAL GROUND SUPPLY VOLTAGE 2 TCM FUSE UNDERHOOD FUSE BLOCK VIDEO PROCESSING CONTROL MODULE VIO/GRY WIRE WHT WIRE WHT/BLU WIRE YEL WIRE

BACKUP LAMP CTRL BATT POS VOLT BCM 6 FUSE BLK WIRE BLU WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DC/DC TRANS FUSE ENGINE CONTROL MODULE GRN WIRE GRN/WHT WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES INSIDE REAR VIEW MIRROR LEFT BACKUP LAMP LEFT LIFTGATE TAIL LAMP ASSEMBLY NCA WIRE ORG/ WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER REAR BODY FUSE BLOCK REAR VIEW CAMERA (ABOVE LICENSE PLATE) RED WIRE RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE RIGHT BACKUP LAMP RIGHT LIFTGATE TAIL LAMP ASSEMBLY SERIAL DATA SIG A SIG B SIG C SIG P SUPPLY VOLT TRANS PARK NEUTRAL SIG TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH AUTOMATIC TRANSMISSION ASSEMBLY UNDERHOOD FUSE BLOCK WHT WIRE WHT/GRY WIRE YEL WIRE

ACCY WAKEUP BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE COMM ENABLE DATA BUS 5 FUEL PUMP DRIVER CONTROL MODULE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GRY/GRN WIRE GRY/VIO WIRE HEADLAMP LEVELING CONTROL MODULE HI SPD GMLAN HI SPD GMLAN SER DATA (+) 1 HUMAN MACHINE INTERFACE CONTROL MODULE MOST CONTROL MOST SER DATA (+) NETWORK SER NETWORK SER DATA BUS 6 NETWORK SER DATA BUS 7 POWER SUPPLY TRANSFORMER REAR DIFFERENTIAL CLUTCH CONTROL MODULE SER DATA SER DATA (+) 9 SER DATA (-) (1) SER DATA - (3) SER DATA COMM ENABLE SUSPENSION CONTROL MODULE VIO/YEL WIRE W/ AWD, HID W/ CONTINUOUSLY VARIABLE REAL TIME DAMPING CHASSIS W/ HID W/ HIGH INTENSITY DISCHARGE HEADLAMPS W/ PREMIUM AUDIO W/O ADAPTIVE CRUISE CONTROL W/O CONTINUOUSLY VARIABLE REAL TIME DAMPING CHASSIS AWD FWD W/O HID, FWD W/O HID, W/ FWD W/O PREMIUM AUDIO WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE YEL WIRE

AJAR SW SIG BATT POS VOLT BCM 6 FUSE BLK WIRE BODY CONTROL MODULE COMPUTER DATA LINES SYSTEM COURTESY LP SW SIG DC/DC TRANS FUSE DOME LAMP SWITCH DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR GRN/GRY WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE HOT AT ALL TIMES INSTRUMENT ILLUMINATION CIRCUIT INSTRUMENT PANEL COMPARTMENT LAMP INSTRUMENT PANEL COMPARTMENT LAMP SWITCH INTR LP CTRL INADVERTENT PWR CTRL INTR LP DEFEAT SW SIG LED AMBIENT LIGHTING CTRL 1 LOGIC NETWORK BUS 3 NETWORK BUS 4 OFF POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER REAR BODY FUSE BLOCK REAR COMPARTMENT COURTESY LAMP REAR COMPT LID LP CTRL RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SUPPLY VOLT UNDERHOOD FUSE BLOCK VIO WIRE WHT/BRN WIRE WHT/YEL WIRE YEL WIRE

1 VOLT ABS FUSE BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE PEDAL POSITION SENSOR BRAKE POS SENS LO REF BRAKE POS SENS SIG BRN WIRE CENTER HIGH MOUNTED STOP LAMP COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ELECTRONIC BRAKE CONTROL MODULE (RIGHT OF LEFT STRUT TOWER) ENGINE CONTROL MODULE GRY/RED WIRE GRY/VIO WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES IGNITION INSTRUMENT CLUSTER LEFT TURN IND LOGIC MOST 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 PARK LAMPS IND POWER SUPPLY TRANSFORMER RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RIGHT TURN IND RUN/CRANK SERIAL DATA SUPPLY VOLT UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

AUXILIARY AUDIO INPUT BATTERY SAVER RELAY 2 BLK WIRE CONNECTOR DRIVER BACK SEAT BLOWER MOTOR DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT BLOWER MOTOR DRIVER CUSHION SEAT HEATING ELEMENT DRIVER LEFT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER RIGHT REAR SEAT HAPTIC MOVEMENT MOTOR DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT LUMBAR SUPPORT PUMP DRIVER SEAT LUMBAR SUPPORT SWITCH DRIVER SEAT MEMORY CONTROL MODULE FRONT, REAR PARKING ASSIST CONTROL MODULE HUMAN MACHINE INTERFACE CONTROL MODULE INFOTAINMENT FACE PLATE CONTROL MODULE INSTRUMENT PANEL MULTI- FUNCTION SWITCH KEYLESS ENTRY CONTROL MODULE LEFT TRAILER STOP/TURN SIGNAL LAMP RELAY NCA WIRE POWER SUPPLY TRANSFORMER RADIO RIGHT TRAILER STOP/TURN SIGNAL LAMP RELAY STEERING WHEEL HEATER RELAY TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB RECEPTACLE W/ FORWARD COLLISION ALERT W/ MEMORY W/O MEMORY WHT WIRE

ACTIVE SAFETY CONTROL MODULE BATT POS VOLT BCM 6 FUSE BLK WIRE BODY CONTROL MODULE CENTER CONSOLE MULTI-FUNCTION SWITCH CLOCK COMPUTER DATA LINES SYSTEM DC/DC TRANS FUSE DRIVER DOOR LOCK SWITCH DRIVER SEAT MEMORY SWITCH DRIVER WINDOW SWITCH GRN/BRN WIRE GRN/GRY WIRE GRN/YEL WIRE GRY/GRN WIRE GRY/YEL WIRE HAZARD WARNING SWITCH HDLP OFF SIG CTRL HDLP SW ON SIG HEAD-UP DISPLAY SWITCH HOT AT ALL TIMES IGNITION MODE SWITCH IND DIMMING CTRL HAZARD LED DIMMING SIG INFOTAINMENT FACEPLATE CONTROL MODULE INSTRUMENT PANEL MULTI- FUNCTION SWITCH INTERIOR LIFTGATE CONTROL SWITCH LANE DEPARTURE WARNING LIGHT IND LED BACKLIGHT DIMMING CTRL LED DISABLE SIG LEFT REAR WINDOW SWITCH LIGHTING CTRL SW REF LIGHTING CTRL SW SIG LO SPD GMLAN SERIAL DATA LOGIC LOGIC LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 3 LOGIC LOCAL INTERCONNECT NETWORK SERIAL DATA BUS 4 NETWORK BUS 3 NETWORK BUS 4 OUTSIDE REAR VIEW MIRROR SWITCH PARK ASSIST IND PARK BRAKE SWITCH PARK LP SIG PARKING ASSIST CONTROL MODULE PASSENGER DOOR LOCK SWITCH POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER REAR BODY FUSE BLOCK RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE SUPPLY VOLT UNDERHOOD FUSE BLOCK W/ FORWARD COLLISION SYSTEM W/ MEMORY W/O FORWARD COLLISION SYSTEM W/O MEMORY WARNING IND CTRL WHT WIRE WHT/BRN WIRE WHT/VIO WIRE WINDSHIELD FRONT VIEW CAMERA YEL WIRE

ALERT LED CTRL BATT POS VOLT BCM 6 FUSE BLK WIRE BLU WIRE BODY CONTROL MODULE COLLISION ALERT INDICATORS COMM ENABLE COMPUTER DATA LINES SYSTEM DC DC TRANS FUSE DIMMING CTRL DRIVER INFORMATION CONTROL DISPLAY FRONT VIEW CAMERA WINDSHIELD GAP UP/DOWN SWITCH GRN WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HI SPD GMLAN HI SPD GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 2 ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED IGN 1 VOLT INDICATOR DIMMING CONTROL INSTRUMENT PANEL FUSE BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LANE DEPARTURE WARNING DISABLE LANE DEPARTURE WARNING DISABLE SWITCH LANE DEPARTURE WARNING IND LANE DEPARTURE WARNING IND CTRL LEFT STEERING WHEEL CONTROLS SWITCH LO SPD GMLAN LOGIC LOGIC INSTRUMENT CLUSTER POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER PRK ASSIST FUSE REAR BODY FUSE BLOCK RED/BLU WIRE RED/GRN WIRE RED/WHT WIRE STEERING WHEEL AIR BAG COIL SW SIG UNDERHOOD FUSE BLOCK UP/DOWN SW SIG VAR/ FUNC FUSE VIO/GRN WIRE VOLT REF W/O HEADUP DISPLAY WHT WIRE WHT/BLU WIRE WHT/GRN WIRE YEL WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BATTERY POSITIVE VOLT BCM 2 FUSE BLK WIRE BLK/BRN WIRE BLK/YEL WIRE BLU WIRE BLU/YEL WIRE BODY CONTROL MODULE BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK POS SENS LOW REF BRK POS SENS SIG COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE FUSE 1 HI SPD GMLAN SERIAL DATA (-) (1) HI SPEED GMLAN SERIAL DATA (-) 1 HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK KEY CAPTURE/COLUMN LOCK SHIFT POS SIG PARK LOCK SOL CTRL PARK POSITION SWITCH POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER RED/GRN WIRE RED/GRY WIRE RED/YEL WIRE TRANS PARK/NEUTRAL SIG 1 TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION SHIFT LEVER TRANSMISSION SHIFT LOCK CONTROL SOLENOID ACTUATOR UNDERHOOD FUSE BLOCK VIO/BLK WIRE WHT WIRE WHT/GRN WIRE WHT/GRY WIRE WHT/RED WIRE WHT/VIO WIRE

B+ VOLT BATT POS VOLT BCM 6 FUSE BLK WIRE BLK/GRY WIRE BLU WIRE BODY CONTROL MODULE BRN/BLU WIRE BRN/GRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DAT BUS 1 DC/DC TRANS FUSE DRIVER INFORMATION CENTER DISPLAY FRT WPR FUSE GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRN/WHT WIRE GRY WIRE HI SPD GMLAN SER DATA (+) 1 HOT AT ALL TIMES IND CTRL INSTRUMENT CLUSTER LOGIC MTR PARK SW SIG N/W SER N/W SER BUS 12 NCA WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER RAIN SENSOR MODULE REAR BODY FUSE BLOCK REAR WIPER SW SIG RED/BLU WIRE RED/BRN WIRE RED/GRN WIRE RED/GRY WIRE RED/WHT WIRE RLY COIL CTRL RLY CTRL SW HIGH SIG UNDERHOOD FUSE BLOCK VIO WIRE WASHER SW SIG WHT WIRE WHT/BLK WIRE WHT/VIO WIRE WINDSHIELD WIPER MOTOR WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY WIPER SW HIGH SIG WIPER SW LO SIG WIPER SW LOW REF YEL WIRE YEL/BLU WIRE YEL/BRN WIRE