GMC Sierra III facelift (2015-2018) left instrument panel fuse block Wiring diagrams

ADJUSTABLE PEDAL MOTOR BLK WIRE BODY CONTROL MODULE (BCM) FORWARD ADJUSTABLE PEDAL RELAY GRN/GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK INSTRUMENT PANEL MULTI- FUNCTION SWITCH LEFT INSTRUMENT PANEL FUSE BLOCK LT GRN/VIO WIRE PRK ENBL/EAP FUSE REARWARD ADJUSTABLE PEDAL RELAY RWD TRANSMISSION PARK POSITION RELAY WHT/GRY WIRE YEL WIRE

5 VOLT REF 5 VOLT REF (1) TRACTION CTRL SW SIG AMBIENT LIGHT SENS SIG ANTI-LOCK BRAKES SYSTEM ANTI-LOCK BRAKES, CRUISE CONTROL, EXTERIOR LIGHTS SYSTEMS ANTI-LOCK BRAKES, HEADLIGHTS, INSTRUMENT CLUSTER SYSTEMS BACKUP LAMP RLY CTRL BATT POSITIVE VOLT BATTERY POSITIVE VOLTAGE BCM 1 FUSE BCM 2 FUSE BCM 3 FUSE BCM 4 FUSE BCM 5 FUSE BCM 6 FUSE BCM 7 FUSE BCM 8 FUSE BLK WIRE BLK/GRN WIRE BLK/VIO WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CARGO LAMP SW SIG CHILD LOCKOUT INDICATOR CTRL COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CRUISE/ETC/TCC BRAKE SIG CURRENT SENS LOW REF DIMMER SW LOW REF DIMMER SW SIG DK BLU WIRE DK BLU/VIO WIRE DOOR LOCKS, ANTI-THEFT SYSTEMS DRV DR LOCK SW LOCK SIG DRV DR LOCK SW UNLCK SIG EXHAUST BRAKE SW SIG SECURITY LOCK RLY CTRL EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS, INTERIOR LIGHTS SYSTEMS DOOR LOCKS, ANTI-THEFT SYSTEMS FOG LAMP RLY CTRL FRONT FOG LAMP SW SIG GRN/BRN WIRE GRN/GRY WIRE GRN/WHT WIRE GROUND GRY WIRE GRY/GRN WIRE GRY/RED WIRE GRY/WHT WIRE HAZARD SWITCH SIG HEADLAMP OFF SIG CTRL HEADLAMP SW ON SIG HEADLAMP SW PARK LAMP SIG HEADLIGHTS SYSTEM HIGH BEAM RLY CTRL HORN RLY CTRL HORNS SYSTEM HOT AT ALL TIMES INDICATOR DIMMING CTRL INTERIOR LAMP DEFEAT SW SIG LED BACKLIGHT DIMMING CTRL LEFT INSTRUMENT PANEL FUSE BLOCK LEFT TRAILER TURN SIG LAMP LIGHTING CONTROL 2 LT GRN/GRY WIRE NETWORK BUS 4 OUT OF PARK SIG PARK BRK SW SIG PARK LAMP RLY CTRL POWER DISTRIBUTION SYSTEM INTERIOR LIGHTS SYSTEM RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/LT GRN WIRE RED/VIO WIRE RED/WHT WIRE REMOTE FUNCTION ACTR CTRL REMOTE FUNCTION ACTR RTN REMOTE FUNCTION ACTR TRANSMIT SIG RIGHT FRONT DRL CTRL RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT TRAILER TURN SIG LAMP RUN IGNITION 3 VOLT SEATS SYSTEM SECURITY INDICATOR CONTROL SENS LOW REF SERIAL DATA (+) (1) REMOTE FUNC ACTR RECEIVE SIG SERIAL DATA (-) (1) STARTING/CHARGING SYSTEM STOP LAMP SW SIG STOP/TURN LAMP CTRL TRAILER BRAKE APPLY SIG TURN SIGNAL LAMP CTRL VIO/BRN WIRE VIO/GRN WIRE VIO/YEL WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/VIO WIRE WIPER SW HIGH SIG WIPER/WASHER SYSTEM YEL WIRE YEL/BLU WIRE YEL/GRN WIRE YEL/GRY WIRE

ACC WAKEUP SER DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) DATA LINK CONNECTOR DK BLU WIRE DK BLU/YEL WIRE DLC/ DSM FUSE GRN/BLU WIRE GRN/BRN WIRE GRN/VIO WIRE GRN/WHT WIRE GROUND DISTRIBUTION SYSTEM HI SPD SER DATA (-) 1 HI SPD SER DATA (-) 1 LIN SER DATA BUS 1 HOT AT ALL TIMES INSTRUMENT PANEL JUNCTION BLOCK LEFT INSTRUMENT PANEL FUSE BLOCK LIN SER BUS 5 LIN SER DATA BUS 11 LIN SER DATA BUS 2 LIN SER DATA BUS 3 LIN SER DATA BUS 4 LO SPD SER DATA LT GRN WIRE LT GRN/DK BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE LT GRN/YEL WIRE PEPS/ HVAC FUSE POWER DISTRIBUTION SYSTEM RED/VIO WIRE RED/WHT WIRE SER DATA COMM ENABLE VIO/YEL WIRE WHT WIRE WHT/DK BLU WIRE

12 VOLT REF 5 VOLT REF 6.0L 6.6L TURBO DIESEL EXCEPT 6.6L TURBO DIESEL 4.3L, 5.3L, 6.2L 6.0L ACCEL PEDAL POS LOW REF 1 ACCEL PEDAL POS SIG 1 ACCELERATOR PEDAL POSITION SENSOR ACCL PEDAL POS 5 VOLT REF 1 ACCL PEDAL POS 5 VOLT REF 2 ACCL PEDAL POS LOW REF 2 ACCL PEDAL POS SIG 2 ADAP CRUISE CTRL UP DWN SW SIG BCM 1 FUSE BLK WIRE BLK/BRN WIRE BLK/DK BLU WIRE BLK/GRN WIRE BLK/LT GRN WIRE BLK/VIO WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BPP SENS 5 CTRL BPP SENS LOW REF BPP SENS SIG BRN/BLU WIRE BRN/GRN WIRE BRN/RED WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CTRL SET/COAST/ RES/ACC SW SIG CRUISE/ETC/TCC/BRK SIG DK BLU WIRE DK BLU/WHT WIRE DK BLU/YEL WIRE ENGINE CONTROL MODULE GMLAN DATA - (1) GRY/GRN WIRE GRY/RED WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK LOW REF LT GRN/WHT WIRE RED/WHT WIRE RUN/CRANK IGNITION 1 VOLT SENS LOW REF SIG GND STOP LAMP SW SIG THRTL ACTR CTRL CLOSE THRTL ACTR CTRL OPEN THRTL POS SENS 5 VOLT REF THRTL POS SENS SIG 1 THRTL POS SENS SIG 2 VEHICLE SPEED SENSOR VIO/LT GRN WIRE VIO/WHT WIRE VSS LOW REF VSS SIG WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/RED WIRE YEL WIRE YEL/WHT WIRE

BLK WIRE BLU WIRE BRN WIRE DOWN DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT LUMBAR SUPPORT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR DRIVER SEAT RECLINE MOTOR DRVR PWR SEAT FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES LEFT INSTRUMENT PANEL FUSE BLOCK RED WIRE RWD VIO WIRE W/O DRIVER, PASSENGER FRONT SEAT HEATER YEL WIRE

ACCY/RUN CRNK FUSE AIR BAG/ INFO FUSE BACKUP LAMP SUPPLY VOLT BATT POSITIVE VOLT BLK WIRE BLK/YEL WIRE BLU/GRN WIRE BRN WIRE BRN/WHT WIRE COMP SW COMPUTER DATA LINES SYSTEM DK BLU WIRE DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR- VIEW MIRROR EMERGENCY SWITCH GMLAN SRL DATA (-) 1 GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRN/WHT WIRE GROUND HOT AT ALL TIMES HOT W/ IGNITION MAIN RELAY ENERGIZED INSIDE REAR VIEW MIRROR INSTRUMENT PANEL JUNCTION BLOCK KEYPAD CTRL KEYPAD GREEN LED KEYPAD GREEN LED IND KEYPAD RED LED IND WIRE KEYPAD RED LED WIRE KEYPAD SIG KEYPAD SIGNAL IND LEFT INSTRUMENT PANEL FUSE BLOCK LOGIC LOW REF LT GRN/BLK WIRE LT GRN/DK BLU WIRE LT GRN/WHT WIRE MIR SIG MIRROR DIMMING ONSTAR SWITCH ORG/ WIRE PHONE SWITCH RED WIRE RED/DK BLU WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RUN/CRANK IGN 1 VOLTAGE TELEMATICS BUTTON ASSEMBLY TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE TEMP SW VIO WIRE VIO/GRN WIRE W/ ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BRN WIRE YEL/VIO WIRE YEL/WHT WIRE

BATTERY POSITIVE VOLT BLK WIRE BLK/GRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BRN/BLK WIRE BRN/BLU WIRE BRN/VIO WIRE COMPUTER DATA LINES SYSTEM DRIVER BACK SEAT HEATING ELEMENT DRIVER CUSHION SEAT HEATING ELEMENT DRV HTD BACK ELE CTRL DRV HTD BACK NTC SIG DRV HTD NTC LO REF DRV HTD SEAT ELE CTRL DRV HTD SEAT ELE LOW REF DRV HTD SEAT NTC SIG DRV SEAT VENT MTR CTRL 1 GRN/BLU WIRE GRN/VIO WIRE GROUND GRY/BLK WIRE HOT AT ALL TIMES IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LT HTD CLD SEAT FUSE NETWORK BUS 2 PASS HTD BACK ELE CTRL PASS HTD BACK NTC LO REF PASS HTD BACK NTC SIG PASS HTD SEAT ELE CTRL PASS HTD SEAT ELE LOW REF PASS HTD SEAT NTC LO REF PASS HTD SEAT NTC SIG PASS SEAT VENT MTR CTRL 1 PASSENGER BACK SEAT HEATING ELEMENT PASSENGER CUSHION SEAT HEATING ELEMENT RED/GRN WIRE RED/GRY WIRE RED/LT GRN WIRE RH FRT HTD CLD SEAT FUSE SEAT HEATING CONTROL MODULE VIO/WHT WIRE W/ VENTILATION HEATER WHT/BLU WIRE WHT/BRN WIRE WHT/GRY WIRE YEL/GRY WIRE

BLK WIRE BLK/RED WIRE BRN WIRE HEATED STEERING WHEEL IND HEATED STEERING WHEEL SWITCH HOT W/ IGNITION MAIN RELAY ENERGIZED HTD WHL FUSE IGN 1 VOLT PNK LED CNTRL WIRE LEFT INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT BLU WIRE ORG/ WIRE PNK WIRE RED WIRE RED/BLK WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SENS SIG STEERING WHEEL AIR BAG COIL STEERING WHEEL HEATER STEERING WHEEL HEATING CONTROL MODULE SW SIG VIO WIRE WHL HI CNTRL WHT WIRE YEL WIRE

ACTUATOR UNLCK CTRL AIR CONDITIONING SYSTEM AMBIENT LIGHT/ SUNLOAD SENSOR BATT POS VOLT BCM 3 FUSE BCM 5 FUSE BLK WIRE BLK/YEL WIRE BLU/VIO WIRE BLU/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE BRN/VIO WIRE BRN/WHT WIRE BRN/YEL WIRE CHILD LOCK IND CHILD LOCK OUT IND CHILD LOCK SWITCH CHILD SECURITY LCK RELAY CTRL COMPUTER DATA LINES SYSTEM DATA DK BLU WIRE DR LCK CTRL DR LCK CTRL 2 DRIVER DOOR LATCH ASSEMBLY (REAR OF DRIVER'S DOOR) DRIVER WINDOW MOTOR DRIVER WINDOW SWITCH DRV LOCK SIG DRV UNLOCK SIG GMLAN GMLAN SERIAL DATA - 1 GRN WIRE GRY WIRE GRY/BLK WIRE GRY/GRN WIRE GRY/WHT WIRE HEADLIGHTS SYSTEM HOOD AJAR SW SIG HORN RELAY CTRL HORNS SYSTEM HOT AT ALL TIMES HVAC CONTROL MODULE IND DIMMING CTRL INSTRUMENT PANEL JUNCTION BLOCK KEY SW UNLCK SIG LEFT INSTRUMENT PANEL FUSE BLOCK LF DR AJAR LF DR AJAR SW SIG LH HDLP LOW BEAM CTRL LIN BUS 3 LOCK MOTOR STATUS LOCK OUT IND LOGIC LOW REF LOW SPD LT GRN/YEL WIRE MOTOR STATUS SIG LR MOTOR STATUS SIG RR MTR STATUS PASS LOCK CTRL PASS UNLOCK CTRL PASSENGER DOOR LOCK SWITCH RED/BRN WIRE RED/DK BLU WIRE RED/GRY WIRE RED/VIO WIRE RF DR AJAR SW SIG RFA CTRL RFA RECEIVE SIG RFA RETURN RFA TRANSMIT SIG RH HDLP LOW BEAM CTRL SECURITY IND CTRL SECURITY LCK SW SIG SERIAL SW SIG UNLOCK SIG VIO/YEL WIRE W/ POWER OPERATED WINDOW W/O POWER OPERATED WINDOW WHT WIRE WHT/VIO WIRE YEL WIRE YEL/BRN WIRE YEL/GRN WIRE YEL/VIO WIRE

BLK WIRE BLU WIRE BRN WIRE DEFOGGER SYSTEM DOWN DRIVER OUTSIDE REAR VIEW MIRROR CARGO LAMP DRIVER OUTSIDE REAR VIEW MIRROR COURTESY LAMP DRIVER OUTSIDE REAR VIEW MIRROR FOLDING MOTOR DRIVER OUTSIDE REAR VIEW MIRROR GLASS DRIVER OUTSIDE REAR VIEW MIRROR MOTOR DRIVER OUTSIDE REAR- VIEW MIRROR ELECTROCHROMIC MIRROR CIRCUIT FOLDING CONTROL SWITCH GRN WIRE GRN/BLK WIRE GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT LEFT INSTRUMENT PANEL FUSE BLOCK LEFT MIDDLE SIDE MARKER LAMP LEFT RIGHT LEFT TURN SIGNAL REPEATER LAMP LOGIC MIR WNDW MDL FUSE MIRROR DIMMING MIRROR MOTOR FOLD IN CTRL MIRROR MOTOR FOLD OUT CTRL OFF OUTSIDE REAR VIEW MIRROR SWITCH RED/VIO WIRE RIGHT VIO WIRE WHT WIRE WHT/GRN WIRE YEL WIRE YEL/VIO WIRE