Chevrolet TrailBlazer II facelift (2017-2024) computer data lines system Wiring diagrams

ACC WAKE-UP SERIAL DATA BATTERY FUSE BLOCK BATTERY POSITIVE VOLTAGE BLK WIRE BLU WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE MODULATOR BRAKE SYSTEM CONTROL MODULE BRK FLUID LEVEL SWITCH SIG BRN WIRE COMPUTER DATA LINES SYSTEM 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 SPD SENS CTRL LEFT FRONT WHEEL SPEED SENSOR LEFT PARK BRAKE ACTUATOR LEFT REAR WHEEL SPEED SENSOR LF FRONT WHEEL SPD SENS SIG LF PRK BRK MTR APPLY CTRL LF PRK BRK MTR LOW REF LF REAR WHEEL SPD SENS CTRL LF REAR WHEEL SPD SENS SIG NCA WIRE PRK BRK APPLY SW PRK BRK APPLY SW VOLT REF PRK BRK RELEASE SW SIG PRK BRK RELEASE SW VOLT REF PRK BRK SW SIG PRK BRK SW SPLY VOLT RED/GRY WIRE RED/YEL WIRE RIGHT FRONT WHEEL SPD SENS CTRL RIGHT FRONT WHEEL SPD SENS SIG RIGHT FRONT WHEEL SPEED SENSOR RIGHT PARK BRAKE ACTUATOR RIGHT PRK BRK MTR APPLY CTRL RIGHT PRK BRK MTR LOW REF RIGHT REAR WHEEL SPD SENS CTRL RIGHT REAR WHEEL SPD SENS SIG RIGHT REAR WHEEL SPEED SENSOR RUN/CRANK IGN 1 VOLT UNDERHOOD FUSE BLOCK VIO WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/RED WIRE

ABS IND. ACC WAKE-UP SERIAL DATA BATTERY POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRN WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) BRAKE IND BRAKE PEDAL POSITION SENSOR BRK APPLY SENS CTRL BRK APPLY SENS LOW REF BRK APPLY SENS SIG BRK POSITION SENS SIG BRN WIRE BRN/BLU WIRE CENTER CONSOLE MULTI-FUNCTION SWITCH COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE (ON RIGHT SIDE OF RADIATOR) ENGINE CTRL SENS LOW REF 2 ENGINE CTRL VEHICLE SENS 5 VOLT REF 1 ESC IND GRN/BLK WIRE GRY/RED WIRE HIGH SPD GMLAN SER DATA (-) 3 HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSTRUMENT CLUSTER LOGIC PARK BRAKE CONTROL SWITCH (CENTER CONSOLE) RED/BRN WIRE SERIAL DATA COMMUNICATION ENABLE TRACTION CONTROL OFF IND TRACTION CTRL SW SIG 1 TRACTION OFF SWITCH UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/RED WIRE

12 VOLT REF 5 VOLT REF ACC IGN VOLT ACCELERATE SW SIG AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM AUTOMATIC HI BEAM CTRL BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) BRAKE APPLY SENS CTRL BRAKE APPLY SENS LOW REF BRAKE APPLY SENS SIG BRN/BLK WIRE BRN/BLU WIRE BRN/GRN WIRE CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DIMMER SW LOW REF DOOR LOCK RECEIVER CTRL DOOR LOCK RECEIVER LOW REF DOOR LOCKS, ANTI-THEFT SYSTEMS FOG LAMP SW SIG FRONT FOG LAMP SW SIG GRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE GRY/YEL WIRE HAZ SW RH TURN SIG HAZ WARN SW LEFT TURN SIG HAZARD WARNING SW SIG HDLP SW FLASH SIG HDLP SW ON SIG HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HI BEAM SELECT SW HI SPD GMLAN SER DATA (+) 1 HI SPD GMLAN SER DATA (+) 1 LOCK RECEIVER RECEIVE SIG HORN SW SIG HORNS SYSTEM HOT AT ALL TIMES HOT W/ BATTERY SAVER RELAY 1 ENERGIZED IGN KEY RESISTOR SIG IGN MODE SW ACC LED SIG IGN MODE SW START LED SIG IGNITION MODE SW MODE VOLT IMMO CTRL MODULE CTRL IMMOBILIZER LOW REF IND DIMMING CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LAMP DEFEAT SW SIG INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM LED BACKLIGHT DIMMING CTRL 1 LED DIMMING SIG LIFTGATE WINDOW/REAR COMPT LIN BUS 1 LIN BUS 4 LOCK RECEIVER TRANSMIT SIG LOW SPD GMLAN SERIAL DATA OFF/RUN/CRANK IGN VOLT PANEL LAMP DIMMER SW SIG POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM SOUND SYSTEMS RED/BLU WIRE RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RED/YEL WIRE RR WINDOW WIPER SW SIG RUN/CRANK IGN 1 VOLT SHIFT POSITION SIG SOUND SYSTEMS SPORT MODE SW SIG STARTING/CHARGING SYSTEM STEERING WHEEL CTRL SIG 1 STOP/START IND CTRL STOP/START SW SIG TAP UP/TAP DOWN SW SIG TRACTION CTRL SW SIG 1 TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM UP/DOWN SW SIG VIO/BLK WIRE VIO/BLU WIRE VIO/YEL WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE WHT/VIO WIRE WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW HI SIG WINDSHIELD WIPER SW LOW REF WINDSHIELD WIPER SW LOW SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/GRY WIRE

ACC PWR RLY COIL CTRL ACC WAKE-UP SERIAL DATA AIR CONDITIONING SYSTEM BACKUP LAMP CTRL BATT POSITIVE VOLT BLK WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/WHT WIRE BODY CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) BRN WIRE BRN/GRN WIRE BRN/GRY WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CHARGING SYSTEM FAULT IND CTRL COMPUTER DATA LINES SYSTEM COURTESY LAMP SW SIG CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS SIG DOOR LOCKS, ANTI-THEFT SYSTEMS DOOR LOCKS, ANTI-THEFT, TRUNK, TAILGATE, FUEL DOORS SYSTEMS DR LK ACTUATOR LK CTRL DR LK ACTUATOR LK CTRL 2 DR LK ACTUATOR UNLK CTRL DRIVER DR LK SW LK SIG DRIVER DR LK SW UNLOCK SIG ENDGATE LATCH RLY COIL CTRL FOG LAMP RLY CTRL FRONT PARK LAMP CTRL GRN/BLU WIRE GRN/BRN WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GROUND GRY WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/VIO WIRE GRY/YEL WIRE HDLP HI BEAM RLY CTRL HEADLIGHTS SYSTEM HI MOUNTED STOP LAMP SPLY VOLT HI SPEED GMLAN SER DATA (-) 1 HOOD AJAR SW SIG HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES IGNITION MODE SW INADVERTENT LOAD CTRL INSTRUMENT PANEL FUSE BLOCK INTERIOR LAMP CTRL LED BACKLIGHT DIMMING CTRL 1 LF DRL CTRL LF TURN SIG LP CTRL LH HDLP LOW BEAM CTRL LH PARK LAMP CTRL LH REAR STOP LAMP CTRL LH TRAILER TURN SIG LAMP CTRL LIFTGATE AJAR SW SIG 1 LIN BUS 1 LIN BUS 2 LIN BUS 3 LOGISTICS MODE RLY CLOSE CTRL LOGISTICS MODE RLY OPEN CTRL LR TURN SIG LP CTRL PARK LK SOLENOID ACTUATOR CTRL PASS DR LK SW LK CTRL PASS DR LK SW UNLOCK CTRL POWER DISTRIBUTION SYSTEM REAR CLOSURE HANDLE SW OPEN SIG REAR FOG LAMP SIG REAR WINDOW WASHER RELAY CTRL REAR WIPER MTR RLY COIL CTRL RED/BRN WIRE RED/VIO WIRE RED/WHT WIRE RF DRL CTRL RF TURN SIG LAMP CTRL RH FRONT DRL CTRL RH HDLP LOW BEAM CTRL RH PARK LAMP CTRL RH TAIL LAMP CTRL RH TRAILER TURN SIG LAMP CTRL RR COMPT COURTESY LAMP CTRL RR LICENSE PLATE LAMP CTRL RR TURN SIG LAMP CTRL RUN/CRANK RELAY COIL CTRL SERIAL DATA COMM ENABLE SHIFT INTERLOCK SYSTEM SPORT MODE IND SIG PARK LAMP RLY CTRL TRUNK, TAILGATE, FUEL DOORS SYSTEM UNDERHOOD FUSE BLOCK VIO/BLK WIRE VIO/BLU WIRE VIO/GRY WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/BRN WIRE WHT/VIO WIRE WHT/YEL WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WIPER SW HIGH SIG WIPER MOTOR PARK SW SIG WIPER MOTOR RLY COIL CTRL WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/BRN WIRE YEL/GRY WIRE YEL/VIO WIRE

ACC WAKE-UP SERIAL DATA BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU/VIO WIRE BODY CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) BRN/GRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DELAY SWITCH GRN/WHT WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER INT LOW HIGH INT OFF LOW MIST HIGH LEFT TAIL LAMP CTRL LOGIC LOW SPEED GMLAN SER DATA 2 LOW WASHER FLUID IND CTRL MIST OFF REAR WINDSHIELD WASHER PUMP RELAY RED/BRN WIRE SERIAL DATA COMMUNICATION ENABLE UNDERHOOD FUSE BLOCK VIO WIRE VIO/YEL WIRE WASHER SWITCH WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/VIO WIRE WINDSHIELD WASHER FLUID LEVEL SENSOR WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER SW SIG WINDSHIELD WIPER MOTOR WINDSHIELD WIPER MOTOR PARK SW SIG WINDSHIELD WIPER MOTOR RLY COIL CTRL WINDSHIELD WIPER RELAY WINDSHIELD WIPER SPEED CONTROL RELAY WINDSHIELD WIPER SW HIGH SIG WINDSHIELD WIPER SW LOW REF WINDSHIELD WIPER SW LOW SIG WINDSHIELD WIPER/WASHER SWITCH WIPER SWITCH YEL/BLU WIRE YEL/BRN WIRE

"CHECK ENGINE" IND CTRL ABS IND. ADAPTIVE CRUISE IND AIR BAG IND AUTO STOP IND BATT POSITIVE VOLT BLK WIRE BLK/BRN WIRE BLU/GRN WIRE BRAKE WARNING IND BRN/BLU WIRE BRN/WHT WIRE CHARGE IND COMPUTER DATA LINES SYSTEM CONTROL IND CONTROL OFF IND CRUISE IND DOOR AJAR IND DRIVER INFORMATION CENTER DISPLAY DRIVER INFORMATION CENTER SW SIG DRIVER INFORMATION CENTER SW LOW REF DRIVER INFORMATION CENTER SW SIG HIGH SPD GMLAN SERIAL DATA (-) 9 DRL IND ELECTRONIC STABILITY ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE GAUGE ENGINE OIL PRESSURE IND ETHERNET BUS 7 (-) FRONT FOG LAMP IND FUEL GAUGE FUEL IND GRN/BLK WIRE GRN/WHT WIRE GRY/BLK WIRE GRY/BLU WIRE GRY/GRN WIRE GRY/YEL WIRE HEADLAMP ON IND HIGH BEAM ASSIST IND HIGH BEAM IND HIGH SPD GMLAN SERIAL DATA (-) 9 DAY NIGHT LED CTRL HOT W/ BATTERY SAVER RELAY 1 ENERGIZED ILLUMINATION INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LANE DEPARTURE WARNING IND LANE KEEPING ASSIST IND LEFT TURN IND LIGHTS ON IND LIN BUS 1 LO SPD GMLAN SERIAL DATA 2 LOGIC LOW WASHER FLUID IND CTRL MALFUNCTION LAMP IND NAVIGATION SYSTEM OFF IND PARK BRAKE IND PARK LAMPS IND PARKING ASSIST IND PEDESTRIAN AHEAD IND RED/BRN WIRE RIGHT TURN IND RUN/CRANK IGN 1 VOLT DRIVER INFORMATION CENTER SELECT MENU SW SIG SEAT BELT 2 IND SEAT BELT IND SECURITY IND SERIAL DATA (+) 9 HIGH SPD GMLAN SERVICE PARK BRAKE IND SPEEDOMETER TACHOMETER TIRE PRESSURE IND TRACTION CONTROL VEHICLE AHEAD IND VIO WIRE VIO/GRN WIRE W/ ONE COLOR GRAPHIC DISPLAY WHT/GRN WIRE WIPER/WASHER SYSTEM

AJAR SW SIG BLK WIRE BLK/BRN WIRE BLU/BLK WIRE BLU/VIO WIRE BLU/YEL WIRE BRAKE SYSTEM CONTROL MODULE BRK FLUID LVL SENS SIG PARK BRAKE SW SUPPLY VOLT BRN WIRE BUS 4 COMPUTER DATA LINES SYSTEM DOWN GRN/BLU WIRE GRN/GRY WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/BLU WIRE GRY/RED WIRE HI SPD GMLAN SERIAL DATA (-) (2) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN LOGIC LR DR MENU NETWORK NETWORK BUS 4 PARK BRAKE CONTROL SWITCH (CENTER CONSOLE) PARK BRAKE RELEASE SW SIG PARK BRAKE SW SIG PASSENGER DOOR LATCH ASSEMBLY PASSENGER WINDOW SWITCH PRESS BRAKE RIGHT REAR DOOR LATCH ASSEMBLY RIGHT REAR WINDOW SWITCH RR DOOR AJAR SW SIG SERIAL DATA BUS 2 SET- TRANSMISSION SHIFT LEVER POSITION INDICATOR TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK VIO/GRN WIRE VOL REF VOL REF PARK BRAKE APPLY SW SIG W/ ONE COLOR GRAPHIC DISPLAY WHT WIRE YEL WIRE YEL/RED WIRE

AJAR SW SIG AMBIENT AIR TEMP SENS SIG AMBIENT AIR TEMPERATURE SENSOR BLK WIRE BLK/BLU WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLK/YEL WIRE BLU/BLK WIRE BLU/BRN WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/WHT WIRE BRAKE FLUID LEVEL SWITCH BRN/BLU WIRE BRN/GRN WIRE BUS 4 COMPUTER DATA LINES SYSTEM DRIVER DOOR LATCH ASSEMBLY DRIVER WINDOW MOTOR ENGINE CONTROL MODULE (ON RIGHT SIDE OF RADIATOR) ENGINE OIL LEVEL SWITCH ENGINE OIL PRESSURE SENSOR ENGINE OIL TEMPERATURE SENSOR FUEL PUMP DRIVER CONTROL MODULE FUEL PUMP, LEVEL SENSOR ASSEMBLY GRN/GRY WIRE GRN/VIO WIRE GRN/YEL WIRE GRY WIRE HI SPD GMLAN SERIAL DATA (-) 7 HI SPEED GLMAN SER DATA (-) 3 LEFT REAR DOOR LATCH ASSEMBLY LEFT REAR WINDOW SWITCH LOGIC LOW REF LR DR NETWORK OIL LVL SW SIG OIL PRESS SENS SIG OIL TEMP SENS SIG PRIMARY FUEL LEVEL SENSOR PRIMARY FUEL LVL SENS SIG RETAINED ACC PWR RLY COIL CTRL SEC FUEL LVL SENS SIG SECONDARY FUEL LEVEL SENSOR SENS 5 VOLT REF 1 SENS LOW REF 1 TRANSFER CASE FLUID TEMP SENS SIG VIO WIRE WHT WIRE YEL/BRN WIRE

ACC WAKE-UP SERIAL DATA BATT POS VOLT BLK WIRE BLK/GRY WIRE BLU WIRE BLU/VIO WIRE BODY CONTROL MODULE (UNDER FRONT OF CENTER CONSOLE) BRN/BLU WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM GRN/WHT WIRE GRY/GRN WIRE GRY/VIO WIRE HOT AT ALL TIMES INSTRUMENT CLUSTER LOGIC LOW SPEED GMLAN SERIAL DATA 2 REAR WINDOW WASHER PUMP RELAY REAR WINDOW WASHER RLY CTRL REAR WINDOW WIPER SW SIG REAR WIPER MOTOR (IN LIFTGATE) REAR WIPER MOTOR RELAY COIL CTRL REAR WIPER RELAY REAR WIPER SWITCH RED/BRN WIRE SERIAL DATA COMMUNICATION ENABLE UNDERHOOD FUSE BLOCK VIO/YEL WIRE WASHER SWITCH WHT/BLK WIRE WHT/BLU WIRE WINDOW WASHER RLY CTRL WINDSHIELD WASHER PUMP WINDSHIELD WASHER PUMP RELAY WINDSHIELD WASHER SW SIG WINDSHIELD WIPER SW LOW REF WINDSHIELD WIPER/WASHER SWITCH YEL WIRE

AIR BAG IND BATT POS VOLT BLK WIRE BLU WIRE BLU/YEL WIRE BRN/BLU WIRE BRN/ORG WIRE COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY DRIVER KNEE AIR BAG DRV KNEE AIR BAG HI CTRL DRV KNEE AIR BAG LO CTRL ETHERNET BUS 7 (-) GRN WIRE GRY/BLU WIRE GRY/ORG WIRE HI SPD GMLAN SERIAL DATA (-) (2) HOT W/ IGNITION MAIN RELAY ENERGIZED IGN INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (RIGHT SIDE OF DASH) INSTRUMENT CLUSTER LOGIC LOW SPD GMLAN SERIAL DATA NCA WIRE ORG/ WIRE ORG/BLU WIRE ORG/GRN WIRE ORG/VIO WIRE ORG/WHT WIRE PASS AIR BAG OFF IND CTRL PASS AIR BAG ON IND CTRL PASS INSTRUMENT PANEL AIR BAG STAGE 1 HI CTRL PASS INSTRUMENT PANEL AIR BAG STAGE 1 LO CTRL PASS INSTRUMENT PANEL AIR BAG STAGE 2 HI CTRL PASS INSTRUMENT PANEL AIR BAG STAGE 2 LO CTRL PASS KNEE AIR BAG HI CTRL PASS KNEE AIR BAG LO CTRL PASS SEAT BELT IND CTRL PASSENGER AIR BAG DISABLED INDICATOR PASSENGER AIR BAG OFF IND PASSENGER AIR BAG ON IND PASSENGER INSTRUMENT PANEL AIR BAG PASSENGER KNEE AIR BAG PASSENGER SEAT BELT IND RED/GRN WIRE SD COMM ENABLE SEAT BELT IND SHORTING BAR STEERING WHEEL AIR BAG COIL STEERING WHEEL AIR BAG STAGE 1 HI CTRL STEERING WHEEL AIR BAG STAGE 1 LO CTRL STEERING WHEEL AIR BAG STAGE 2 HI CTRL STEERING WHEEL AIR BAG STAGE 2 LO CTRL UNDERHOOD FUSE BLOCK VIO/GRN WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/ORG WIRE YEL/ORG WIRE