Buick Envista I (2022-2024) underhood fuse block Wiring diagrams

A/C IND ACCESSORY WAKEUP AMBIENT LIGHT SENS SIG AMBIENT LIGHT/SUNLOAD SENSOR (TOP CENTER OF DASH) BATT POS VOLT BATTERY FUSE BLOCK BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRY WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM COOLING FAN MOTOR (BEHIND RADIATOR) DISPLAY SIG + DRIVER INFORMATION CENTER DISPLAY ENGINE COOLANT TEMPERATURE GAUGE ENGINE COOLANT TEMPERATURE IND ETHERNET BUS 4 (-) GRN WIRE GRN/YEL WIRE GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES INFOTAINMENT INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LVDS RADIO RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE SECURITY IND CTRL SERIAL DATA SIG GND UNDERHOOD FUSE BLOCK VIO/YEL WIRE WHT/BLU WIRE YEL WIRE

A/C COMPRESSOR CLUTCH RELAY A/C IND A/C SWITCH AUTO IND AUTO SWITCH BLK/WHT WIRE BLU/GRY WIRE BRN/GRN WIRE BRN/YEL WIRE COOLING FAN HIGH SPEED RELAY COOLING FAN LOW SPEED RELAY COOLING FAN MEDIUM SPEED RELAY DEFROST, LOWER AIR OUTLET IND DEFROST, LOWER AIR OUTLET SWITCH ENGINE CONTROLS IGNITION RELAY FAN DOWN SWITCH FAN UP SWITCH GRN WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE HVAC CONTROLS LEFT TEMPERATURE DOWN SWITCH LEFT TEMPERATURE UP SWITCH START/ STOP SWITCH RIGHT TEMPERATURE DOWN SWITCH LOGIC LOWER AIR OUTLET IND LOWER AIR OUTLET SWITCH RECIRCULATION IND RECIRCULATION SWITCH RED/BLU WIRE RED/BRN WIRE RED/WHT WIRE RIGHT TEMPERATURE UP SWITCH START STOP IND TEMPERATURE CONTROL UNDERHOOD FUSE BLOCK UPPER AIR OUTLET IND UPPER AIR OUTLET SWITCH UPPER, LOWER AIR OUTLET IND UPPER, LOWER AIR OUTLET SWITCH WHT/BLK WIRE WHT/BLU WIRE WHT/GRY WIRE WINDSHIELD DEFROST IND WINDSHIELD DEFROST SWITCH YEL WIRE

A/C COMPRESSOR CLUTCH A/C EVAPORATOR TEMPERATURE SENSOR AMBIENT AIR TEMPERATURE SENSOR AUXILIARY COOLANT PUMP BATT POS VOLT BLK WIRE BLK/BLU WIRE BLK/GRY WIRE BLK/YEL WIRE BLOWER MOTOR BLOWER MTR LO RTN BLOWER MTR SPD CTRL BLU WIRE BLU/GRY WIRE BRN/GRN WIRE BRN/YEL WIRE ENGINE COOLANT TEMPERATURE SENSOR GRN/VIO WIRE GRY WIRE HOT AT ALL TIMES NCA WIRE RED/BLU WIRE RED/VIO WIRE UNDERHOOD FUSE BLOCK VIO WIRE VIO/BLK WIRE WHT/BLK WIRE WHT/GRY WIRE

5-VOLT REF 1 A/C COMPRESSOR CLUTCH RLY CTRL A/C EVAPORATOR TEMP SENS SIG A/C ON IND A/C ON SWITCH A/C REFRIGERANT PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR AIR INLET DOOR ACTUATOR CTRL 1 AIR INLET DOOR ACTUATOR CTRL 2 AIR INLET DOOR ACTUATOR CTRL 3 AIR INLET DOOR ACTUATOR CTRL 4 AIR RECIRCULATION DOOR ACTUATOR AIR TEMP DOOR CTRL 1 AIR TEMP DOOR CTRL 2 AIR TEMP DOOR CTRL 3 AIR TEMP DOOR CTRL 4 AMBIENT AIR TEMP SENS SIG BLK/BLU WIRE BLK/BRN WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/GRN WIRE BRN/RED WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE COMPUTER DATA LINES SYSTEM COOLING FAN HI SPD RLY CTRL COOLING FAN LOW SPD RLY CTRL ENG COOLANT TEMP SENS SIG ENGINE CONTROL MODULE ENGINE CONTROLS SYSTEM ENGINE CTRL MODULE LIN BUS 1 ENGINE CTRL SENS ENGINE CTRL SENS LOW REF 2 FAN 3 CTRL FSD SUPPLY VOLT 1 GRN WIRE GRN/VIO WIRE GRY WIRE GRY/BLU WIRE HI SPD GMLAN SERIAL DATA (-) (1) HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HVAC CONTROL MODULE (CENTER OF DASH) HVAC DOOR ACTUATOR CTRL LEFT AIR TEMPERATURE DOOR ACTUATOR LOGIC LOW REF (1) MODE DOOR ACTUATOR MODE DOOR CTRL 1 MODE DOOR CTRL 2 MODE DOOR CTRL 3 MODE DOOR CTRL 4 POWERTRAIN MAIN RLY SENS LOW REF SIG GND UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRN WIRE WHT WIRE WHT/BLK WIRE WHT/GRY WIRE YEL WIRE YEL/GRN WIRE

BATT POS VOLT BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) BRN WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENG CTRL MODULE LIN BUS 1 ENGINE CONTROL MODULE GENERATOR GENERATOR FIELD DUTY CYCLE SIG GRN WIRE GRN/VIO WIRE GRY WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT W/ BATTERY SAVER RELAY 1 ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED INFOTAINMENT DISPLAY SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LOGIC LOW SPEED GMLAN SERIAL DATA (+) 1 LVDS BK RED/BRN WIRE RED/WHT WIRE RED/YEL WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER MOTOR UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE WHT WIRE

BATT POS VOLT BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/YEL WIRE DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) GRN WIRE GRN/WHT WIRE GRY/GRN WIRE HI SPD GMLAN SERIAL DATA (+) 8 HI SPD GMLAN SERIAL DATA (+) 9 HI SPD GMLAN SERIAL DATA (-) (1) HI SPD GMLAN SERIAL DATA (-) (2) HI SPD GMLAN SERIAL DATA (-) 11 HI SPD GMLAN SERIAL DATA (-) 12 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT PANEL FUSE BLOCK LO SPD GMLAN SERIAL DATA LO SPD GMLAN SERIAL DATA (PINS: 21 TO 25 NOT USED) LO SPD GMLAN SERIAL DATA 2 LO SPD GMLAN SERIAL DATA 3 RED/BRN WIRE RED/VIO WIRE RUN/CRANK IGN 1 VOLT SERIAL DATA COMM ENABLE (PINS: 26 TO 30 NOT USED) SERIAL DATA GATEWAY MODULE (UNDER FRONT FLOOR CONSOLE) SIG GND HI SPD GMLAN SERIAL DATA (+) 9 UNDERHOOD FUSE BLOCK VIO/GRY WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/GRY WIRE

BATT POS VOLT BK HEAD-UP DISPLAY SIG BLK WIRE BLU/WHT WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) COMPUTER DATA LINES SYSTEM DISPLAY ENDGATE LATCH RELAY COIL CTRL GRN WIRE GRN/YEL WIRE GROUND GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES INFOTAINMENT DISPLAY SIG INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LIFTGATE AJAR SWITCH SIGNAL 1 LIFTGATE LATCH LIFTGATE UNLATCH RELAY LIFTGATE WINDOW/RR COMPARTMENT LID MTR UNLATCH CTRL LOGIC LOW SPEED GMLAN SERIAL DATA LVDS LVDS BK MULTI-FUNCTION CARRIER LICENSE PLATE LAMP POWER SUPPLY TRANSFORMER RADIO RADIO LIN BUS 1 RED/GRN WIRE RED/VIO WIRE RR CLOSURE HANDLE SWITCH OPEN SIGNAL RR LICENSE PLATE LAMP CTRL UNDERHOOD FUSE BLOCK VIO/GRY WIRE YEL WIRE YEL/BLU WIRE

BATTERY BATTERY FUSE BLOCK BATTERY SENSOR MODULE BLK WIRE BLU/BLK WIRE CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM FUEL PUMP DRIVER CONTROL MODULE HOT AT ALL TIMES INSTRUMENT PANEL FUSE BLOCK POWER DISTRIBUTION SYSTEM POWER SUPPLY TRANSFORMER (UNDER LEFT SIDE OF DASH) RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE STARTER MOTOR STARTER RELAY UNDERHOOD FUSE BLOCK VIO/GRN WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BATT POS VOLT BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BODY CONTROL MODULE (BELOW CENTER OF DASH) CENTER CONSOLE MULTI-FUNCTION SWITCH COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE GRN WIRE GRN/BLK WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED IGN MODE SW VOLT IGNITION MODE SWITCH IND DIMMING CTRL KEYLESS ENTRY CONTROL MODULE LED BACKLIGHT DIMMING CTRL 1 STOP/START IND CTRL LOW SPEED GMLAN PASSIVE START SW 2 LO REF PASSIVE START SW SIG 2 RED/BRN WIRE RUN/CRANK IGN 1 VOLT SIG GND STARTER ENABLE RELAY CTRL STOP/START SW SIG TRANSMISSION CONTROL MODULE TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION PARK/ NEUTRAL SIG 1 UNDERHOOD FUSE BLOCK VIO/GRY WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLK WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BLK/WHT WIRE BLU WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE HIGH SPEED GMLAN SERIAL DATA (-) (1) HOT AT ALL TIMES HOT W/ ENGINE CONTROLS IGNITION RELAY ENERGIZED HOT W/ IGNITION MAIN RELAY ENERGIZED PRESSURE CONTROL SOLENOID VALVE 1 PRESSURE CONTROL SOLENOID VALVE 2 PRESSURE CONTROL SOLENOID VALVE 3 PRESSURE CONTROL SOLENOID VALVE 4 PRESSURE CONTROL SOLENOID VALVE 5 RED/YEL WIRE SHIFT SOLENOID VALVE 1 SOL VALVE LOW SIDE CTRL TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID VALVE TRANS PARK/ NEUTRAL SIG 1 TRANSMISSION CONTROL MODULE TRANSMISSION FLUID PRESSURE SWITCH TRANSMISSION FLUID TEMPERATURE SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION INTERNAL MODE SWITCH TRANSMISSION OUTPUT SHAFT SPEED SENSOR UNDERHOOD FUSE BLOCK VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/GRY WIRE YEL WIRE YEL/BLU WIRE YEL/GRN WIRE