GMC Sierra IV facelift (2022-2024) body wiring harness junction block Wiring diagrams

AUTOSAR CAN BUS AUTOSAR CAN BUS (+) 5 SERIAL DATA AUTOSAR CAN BUS (+) 6 SERIAL DATA AUTOSAR CAN BUS (+) 7 SERIAL DATA BLK WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BLU/YEL WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE DATA LINK CONNECTOR (LOWER LEFT SIDE OF DASH) DISTRIBUTION ENGINE WIRING HARNESS JUNCTION BLOCK ETHERNET BUS 1 ENABLE SIGNAL GRN WIRE GRN/BLK WIRE GRN/VIO WIRE GRY WIRE HOT AT ALL TIMES ON/OFF VEHICLE SWITCH PASSIVE START PASSIVE START SW 2 LOW REF PASSIVE START SW SIGNAL 2 POWER PRIVATE SERIAL CAN BUS (+) 1 PRIVATE SERIAL CAN BUS (-) 2 RED/BRN WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RUN/CRANK RELAY COIL CONTROL SERIAL DATA GATEWAY MODULE (BEHIND LEFT CENTER OF DASH) SW 2 LOW REF SW SIGNAL 2 SYSTEM TRAILER LAMP CONTROL MODULE VIO WIRE W/O SMART TRAILER INTEGRATION INDICATOR WHT WIRE YEL WIRE

BATT POS VOLT BLK WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DRIVER FRONT SEAT BACK LUMBAR PUMP DRIVER LIN BUS 1 FRONT SEAT BOLSTER MEMORY MODULE DRIVER PRIMARY FRONT SEAT BLADDER CONTROL MODULE DRIVER SECONDARY FRONT SEAT BLADDER CONTROL MODULE DRV LIN BUS 1 FRONT SEAT BOLSTER MEMORY MODULE DRV SEAT ADJUSTER MEMORY MODULE LIN BUS 2 DRV SEAT BOLSTER PUMP LOW REFERENCE DRV SEAT LUMBAR/ BOLSTER PUMP CTRL GRN/BLK WIRE GRN/GRY WIRE HOT AT ALL TIMES NCA WIRE RED/BRN WIRE WHT/BLU WIRE

AUTOSAR CAN BUS (+) 4 SERIAL DATA AUTOSAR CAN BUS (+) 4 SERIAL DATA (PINS: 21 TO 30 NOT USED) BATT POSITIVE VOLT BLK WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/YEL WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER FRONT SEAT ADJUSTER ACTUATOR DRIVER FRONT SEAT RECLINER ACTUATOR DRIVER FRONT SEAT TILT ADJUSTER ACTUATOR DRIVER FRONT SEAT VERTICAL ADJUSTER ACTUATOR DRIVER SEAT ADJUSTER MEMORY MODULE (UNDER DRIVER SEAT) DRIVER SEAT FRONT VERTICAL MTR DOWN CTRL DRIVER SEAT FRONT VERTICAL MTR UP CTRL DRIVER SEAT HORIZONTAL MTR REARWARD CTRL DRIVER SEAT REAR VERTICAL MTR DOWN CTRL DRIVER SEAT REAR VERTICAL MTR UP CTRL DRIVER SEAT RECLINE MTR REARWARD CTRL DRV SEAT ADJUSTER MEMORY MODULE LIN BUS 1 AUTOSAR CAN BUS (-) 4 SERIAL DATA DRV SEAT ADJUSTER MEMORY MODULE LIN BUS 2 AUTOSAR CAN BUS (-) 4 SERIAL DATA DRV SEAT HORIZ MTR FWD CTRL DRV SEAT RECLINE MTR FWD CTRL DRV SEAT RR HAPTIC MOVEMENT MOTOR CTRL DRV SEAT LR HAPTIC MOVEMENT MOTOR CTRL GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GRN/YEL WIRE GRY/BLU WIRE GRY/GRN WIRE HOT AT ALL TIMES NAVIGATION SYSTEM RED/BRN WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK SEAT MEMORY SW SIG 1 SEAT MEMORY SWITCH SET SIG WHT WIRE YEL WIRE YEL/BLU WIRE YEL/BRN WIRE

BATT POS VOLT BLK WIRE BLK/GRN WIRE BLK/WHT WIRE BLU/GRN WIRE BLU/GRY WIRE BLU/VIO WIRE BLU/YEL WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN/GRY WIRE BRN/VIO WIRE COAX COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DRIVER FRONT SEAT ADJUSTER MEMORY SWITCH DRIVER SEAT ADJUSTER MEMORY MODULE (UNDER DRIVER SEAT) EXIT EXTENDED CAB CREW CAB GRN/BLK WIRE GRN/GRY WIRE GRN/YEL WIRE GRY WIRE HOT AT ALL TIMES NAVIGATION SYSTEM NCA WIRE PASSENGER FRONT SIDE DOOR WINDOW SWITCH PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER OUTSIDE REAR VIEW MIRROR ACTUATOR PASSENGER OUTSIDE REAR VIEW MIRROR CARGO EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR EXTERIOR FLOOD LAMP PASSENGER OUTSIDE REAR VIEW MIRROR FOLDING ACTUATOR PASSENGER OUTSIDE REAR VIEW MIRROR FRONT CLEARANCE LAMP PASSENGER OUTSIDE REAR VIEW MIRROR GLASS PASSENGER SIDE OBJECT DETECTION INDICATOR RED/BRN WIRE RIGHT OUTSIDE REAR VIEW MIRROR TURN SIGNAL LAMP RIGHT SIDE VIEW DRIVER INFORMATION CAMERA SEAT MEMORY SW SET SIG SEAT MEMORY SW SIG 1 SET- VIO/WHT WIRE W/ ELECTRIC REMOTE POWER FOLD MIRROR W/O ELECTRIC REMOTE POWER FOLD MIRROR WHT WIRE WHT/GRN WIRE YEL/GRY WIRE YEL/RED WIRE YEL/VIO WIRE YEL/WHT WIRE

BATT POS VOLT BLK WIRE BLK/WHT WIRE BLU WIRE BLU/GRN WIRE BLU/VIO WIRE BLU/YEL WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DOWN DRIVER FRONT SEAT ADJUSTER MEMORY SWITCH DRIVER SEAT ADJUSTER MEMORY MODULE DRV SEAT ADJUSTER MEM MOD LIN BUS 1 EXIT EXTENDED CAB CREW CAB GRN WIRE GRN/BRN WIRE GRN/WHT WIRE HOT AT ALL TIMES ORG/ WIRE RED WIRE RED/BRN WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RWD SEAT MEMORY SW SET SIG SEAT MEMORY SW SIG 1 SET- STEERING COLUMN TELESCOPE ACTUATOR STEERING COLUMN TILT WHEEL ACTUATOR STEERING COLUMN TILT WHEEL, TELESCOPE CONTROL MODULE STEERING COLUMN TILT WHEEL, TELESCOPE SWITCH STRG CLMN TELESCOPE MOTOR FWD CTRL STRG CLMN TELESCOPE MOTOR LO REF STRG CLMN TELESCOPE MOTOR RRWD CTRL STRG CLMN TELESCOPE MOTOR SIG STRG CLMN TILT MTR DOWN CTRL STRG CLMN TILT MTR LO REF STRG CLMN TILT MTR SIG STRG CLMN TILT MTR UP CTRL STRG CLMN TILT, TELESCOPE SW DOWN SIG STRG CLMN TILT, TELESCOPE SW FEEDBACK SIG STRG CLMN TILT, TELESCOPE SW FWD SIG STRG CLMN TILT, TELESCOPE SW RRWD SIG STRG CLMN TILT, TELESCOPE SW UP SIG VIO WIRE VIO/BLK WIRE WHT WIRE YEL WIRE YEL/BRN WIRE

BLK WIRE BLU/BRN WIRE BLU/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK DOWN GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE HOT AT ALL TIMES PASSENGER FRONT SEAT ADJUSTER ACTUATOR PASSENGER FRONT SEAT ADJUSTER SWITCH PASSENGER FRONT SEAT RECLINER ACTUATOR PASSENGER FRONT SEAT TILT ADJUSTER ACTUATOR PASSENGER FRONT SEAT VERTICAL ADJUSTER ACTUATOR RED/YEL WIRE RWD YEL/BLU WIRE YEL/WHT WIRE

BATT POS VOLT BLK WIRE BLK/BLU WIRE BODY WIRING HARNESS JUNCTION BLOCK DOWN GRY/WHT WIRE HOT AT ALL TIMES PASS SEAT LUMBAR SUPPORT SW ANALOG SIG PASS SEAT LUMBAR/ BOLSTER PUMP CTRL PASS SEAT POSI SW LO REF PASSENGER FRONT SEAT BACK LUMBAR PUMP PASSENGER FRONT SEAT BLADDER CONTROL MODULE PASSENGER FRONT SEAT LUMBAR SWITCH RED/BRN WIRE RWD YEL/GRN WIRE

8 9 AUTOSAR SERIAL DATA CAN BUS (-) 4 SERIAL DATA AUTOSAR SERIAL DATA CAN BUS (-) 4 SERIAL DATA BATT POSITIVE VOLT BLK WIRE BLU/BRN WIRE BLU/VIO WIRE BLU/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN/VIO WIRE COMPUTER DATA LINES SYSTEM GRN WIRE GRN/BLU WIRE GRN/VIO WIRE GRN/WHT WIRE GRN/YEL WIRE HOT AT ALL TIMES PASSENGER FRONT SEAT ADJUSTER ACTUATOR PASSENGER FRONT SEAT RECLINER ACTUATOR PASSENGER FRONT SEAT TILT ADJUSTER ACTUATOR PASSENGER FRONT SEAT VERTICAL ADJUSTER ACTUATOR PASSENGER SEAT ADJUSTER MEMORY MODULE PASSENGER SEAT FRONT VERTICAL MTR DOWN CTRL PASSENGER SEAT FRONT VERTICAL MTR UP CTRL PASSENGER SEAT HORIZ FWD CTRL PASSENGER SEAT HORIZONTAL MTR REARWARD CTRL PASSENGER SEAT REAR VERTICAL MTR DOWN CTRL PASSENGER SEAT REAR VERTICAL MTR UP CTRL PASSENGER SEAT RECLINE FWD CTRL PASSENGER SEAT RECLINE MTR REARWARD CTRL POWER DISTRIBUTION SYSTEM RED/BRN WIRE RED/YEL WIRE SEAT MEM MOD CONFIGURATION 2 SEAT MEM MOD CONFIGURATION 2 (PINS: 24 TO 30 NOT USED) WHT WIRE YEL/BLU WIRE YEL/WHT WIRE

BATT POSITIVE VOLT BLK WIRE BLK/WHT WIRE BLU/WHT WIRE BODY CONTROL MODULE LIN BUS 2 BODY WIRING HARNESS JUNCTION BLOCK BRN/BLK WIRE COMPUTER DATA LINES SYSTEM DISPLAY GRN/BLK WIRE GRN/BRN WIRE GRN/VIO WIRE GRY WIRE HOT AT ALL TIMES LEFT REAR CUSHION HEATER SWITCH LEFT REAR SEAT CUSHION HEATER LOGIC LR CUSHION THERMISTOR FEEDBACK SIG LR SEAT CUSHION HEATING ELEMENT CTRL LR SEAT CUSHION HEATING ELEMENT LO REF LR SEAT CUSHION TEMP SENS SIG NCA WIRE ON/OFF SWITCH REAR SEAT HEATER CONTROL MODULE (UNDER FRONT OF REAR SEAT) REAR SEAT HEATER SWITCH RED/BLU WIRE RED/WHT WIRE RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK RIGHT REAR CUSHION HEATER SWITCH RIGHT REAR SEAT CUSHION HEATER RR CUSHION THERMISTOR FEEDBACK SIG RR SEAT CUSHION HEATING ELEMENT CTRL RR SEAT CUSHION HEATING ELEMENT LO REF RR SEAT CUSHION TEMP SENS SIG WHT/BLK WIRE WHT/BLU WIRE YEL/WHT WIRE

BATTERY POSITIVE VOLTAGE BLK WIRE BODY CONTROL MODULE (LEFT END OF DASH) BODY CTRL MODULE LIN BUS 2 BODY WIRING HARNESS JUNCTION BLOCK COMPUTER DATA LINES SYSTEM GRN/BLU WIRE HOT AT ALL TIMES REAR SLIDING WINDOW CLOSE RELAY REAR SLIDING WINDOW MOTOR REAR SLIDING WINDOW OPEN RELAY RED/GRY WIRE RED/VIO WIRE RETAINED ACCESSORY POWER CONTROL RIGHT INSTRUMENT PANEL WIRING HARNESS JUNCTION BLOCK ROOF CONSOLE VIO WIRE VIO/YEL WIRE WHT WIRE YEL WIRE YEL/VIO WIRE