GMC Sierra III facelift (2015-2018) display sig + Wiring diagrams

BACK SIG BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BUS 12 CAMERA LOW REF CAMERA SIG 2 CIRCUIT COAX COMPUTER DATA LINES SYSTEM CTRL DIMMING DISPLAY DISPLAY SIG + DOWN SIG FORWARD SIG GMLAN SERIAL DATA GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT GRN/DK BLU WIRE LT GRN/WHT WIRE LVDS MUTE NAVIGATION SYSTEM NCA WIRE NETWORK NETWORK BUS 10 NETWORK BUS 5 POWER DISTRIBUTION SYSTEM RADIO CONTROLS RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RAP RLY COIL CTRL REAR VIEW CAMERA CIRCUIT RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK DOWN SEEK UP SERIAL DATA BUS 5 SOUND SYSTEMS SOURCE UP SIG USB VIDEO SYSTEM VOICE VOL (-) W/ REAR VIEW CAMERA W/O REAR VIEW CAMERA WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

1-VT 2-VT AMP FUSE AUDIO SIG + BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CELL CELLULAR PHONE MICROPHONE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DISPLAY SIG + GMLAN SERIAL DATA (+) 9 GPS GPS ANT SIG GPS/CELL GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE (BEHIND GLOVE BOX) INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LOGIC LOW REF LT GRN/WHT WIRE LVDS MICROPHONE SIG MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE NETWORK BUS 5 RED WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SER DATA TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB GY USB RECEPTACLE USB SERIAL DATA USB SRL DATA VOICE SIG W/ DIGITAL AUDIO SYSTEM W/ ONSTAR W/ ONSTAR W/O ONSTAR W/O ONSTAR WHT/BLU WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/VIO WIRE X-BK YEL WIRE

AM/FM BK AUX AUDIO COMM SIG AUX AUDIO SCREEN (2) AUX DETECTION SIG AUXILIARY AUDIO INPUT BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CAMERA LOW REF CAMERA SIG 2 COAX COMPUTER DATA LINES SYSTEM DISPLAY SIG + GRN WIRE GROUND GROUND DISTRIBUTION GRY WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LH AUX AUDIO SIG (2) LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/WHT WIRE LVDS MOST CONTROL MOST SERIAL DATA (+) NAVIGATION SYSTEM NCA WIRE POWER DISTRIBUTION SYSTEM RADIO RADIO ANTENNA RAP RLY COIL CTRL REAR VIEW CAMERA CIRCUIT RED/GRY WIRE RED/VIO WIRE RH AUX AUDIO SIG (2) SERIAL DATA BUS 5 SYSTEM TELEPHONE VOICE SIG USB VIO WIRE W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE WHT/BLU WIRE WHT/LT GRN WIRE WHT/VIO WIRE XM/HD CU YEL WIRE

BACK SIG BASE EQUIPMENT BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BUS 12 CIRCUIT COAX COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DOWN SIG EXCEPT BASE EQUIPMENT FORWARD SIG GMLAN SERIAL DATA GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HTD STEERING IND SIG INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LOGIC LT GRN/DK BLU WIRE LT GRN/WHT WIRE LVDS MUTE NETWORK NETWORK BUS 10 NETWORK BUS 5 POWER DISTRIBUTION SYSTEM RADIO CONTROLS RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK DOWN SEEK UP SOUND SYSTEMS SOURCE STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE UP SIG USB USB/OBS DET FUSE VIDEO SYSTEM VOICE VOL (-) WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

BACK SIG BASE EQUIPMENT BAT POS VOLT BATT POS BLK WIRE BLU WIRE BUS 10 BUS 12 BUS 5 CIRCUIT COMPUTER DATA LINES SYSTEM CTRL DATA DIMMING DISPLAY DISPLAY SIG + DOWN SIG EXCEPT BASE EQUIPMENT FWD SIG GMLAN SERIAL GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE HOT AT ALL TIMES ILL INFO DISPLAY MODULE INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT GRN/DK BLU WIRE LT GRN/WHT WIRE LVDS MUTE VOL + NETWORK RADIO CONTROLS RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK SOURCE DOWN SEEK UP STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE UP SIG VIDEO SYSTEM VOICE VOL (-) VOLT W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE W/ REAR VIEW CAMERA W/O REAR VIEW CAMERA WHT WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

BACK SIG BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE BUS 12 CAMERA LOW REF CAMERA SIG 2 CIRCUIT COAX COMPUTER DATA LINES SYSTEM CTRL DIMMING DISPLAY DISPLAY SIG + DOWN SIG FORWARD SIG GMLAN SERIAL DATA GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE GRY/VIO WIRE GRY/YEL WIRE HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LEFT STEERING WHEEL CONTROLS SWITCH LOGIC LT GRN/DK BLU WIRE LT GRN/WHT WIRE LVDS MUTE NAVIGATION SYSTEM NCA WIRE NETWORK NETWORK BUS 10 NETWORK BUS 5 POWER DISTRIBUTION SYSTEM RADIO CONTROLS RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RAP RLY COIL CTRL REAR VIEW CAMERA CIRCUIT RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK DOWN SEEK UP SERIAL DATA BUS 5 SOUND SYSTEMS SOURCE UP SIG USB VIDEO SYSTEM VOICE VOL (-) W/ REAR VIEW CAMERA W/O REAR VIEW CAMERA WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

1-VT 2-VT AMP FUSE AUDIO SIG + BATT POS VOLT BLK WIRE BLK/BRN WIRE BLK/GRY WIRE BLK/YEL WIRE BLU WIRE BLU/GRN WIRE CAMERA SIGNAL 2 CELL CELLULAR PHONE MICROPHONE CELLULAR PHONE NAVIGATION, DIGITAL RADIO ANTENNA COAX COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM DISPLAY SIG + GMLAN SERIAL DATA (+) 9 GPS GPS ANT SIG GPS/CELL GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE (BEHIND GLOVE BOX) INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LOGIC LOW REF LT GRN/WHT WIRE LVDS MICROPHONE SIG MOST CONTROL MOST SERIAL DATA (+) NAVIGATION ANTENNA SIGNAL SPLITTER NCA WIRE NETWORK BUS 5 RED WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK SER DATA TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE USB USB GY USB RECEPTACLE USB SERIAL DATA USB SRL DATA VOICE SIG W/ DIGITAL AUDIO SYSTEM W/ ONSTAR W/ ONSTAR W/O ONSTAR W/O ONSTAR WHT/BLU WIRE WHT/DK BLU WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/VIO WIRE X-BK YEL WIRE

AM/FM BK AUX AUDIO COMM SIG AUX AUDIO SCREEN (2) AUX DETECTION SIG AUXILIARY AUDIO INPUT BACKUP LAMP CTRL BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BRN WIRE CAMERA LOW REF CAMERA SIG 2 COAX COMPUTER DATA LINES SYSTEM DISPLAY SIG + GRN WIRE GROUND GROUND DISTRIBUTION GRY WIRE GRY/VIO WIRE GRY/YEL WIRE HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK IPC FUSE LEFT INSTRUMENT PANEL FUSE BLOCK LH AUX AUDIO SIG (2) LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/WHT WIRE LVDS MOST CONTROL MOST SERIAL DATA (+) NAVIGATION SYSTEM NCA WIRE POWER DISTRIBUTION SYSTEM RADIO RADIO ANTENNA RAP RLY COIL CTRL REAR VIEW CAMERA CIRCUIT RED/GRY WIRE RED/VIO WIRE RH AUX AUDIO SIG (2) SERIAL DATA BUS 5 SYSTEM TELEPHONE VOICE SIG USB VIO WIRE W/ FRONT COMPARTMENT FLOOR CUSTOM CONSOLE WHT/BLU WIRE WHT/LT GRN WIRE WHT/VIO WIRE XM/HD CU YEL WIRE

BACK SIG BASE EQUIPMENT BATT POS VOLT BLK WIRE BLK/YEL WIRE BLU WIRE BUS 12 CIRCUIT COAX COMPUTER DATA LINES SYSTEM DISPLAY DISPLAY SIG + DOWN SIG EXCEPT BASE EQUIPMENT FORWARD SIG GMLAN SERIAL DATA GRN/BLK WIRE GRN/BRN WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY/GRN WIRE GRY/YEL WIRE HOT AT ALL TIMES HTD STEERING IND SIG INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK LOGIC LT GRN/DK BLU WIRE LT GRN/WHT WIRE LVDS MUTE NETWORK NETWORK BUS 10 NETWORK BUS 5 POWER DISTRIBUTION SYSTEM RADIO CONTROLS RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/GRY WIRE RED/VIO WIRE RED/YEL WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RIGHT STEERING WHEEL CONTROLS SWITCH SEATS SYSTEM SEEK DOWN SEEK UP SOUND SYSTEMS SOURCE STEERING WHEEL AIR BAG COIL STR WHL CNTRL FUSE UP SIG USB USB/OBS DET FUSE VIDEO SYSTEM VOICE VOL (-) WHT WIRE WHT/BLU WIRE WHT/YEL WIRE YEL WIRE YEL/BLU WIRE

BATT POS VOLT BATT POSITIVE VOLT BK USB BK USB USB BLK WIRE BLK/WHT WIRE BLU/VIO WIRE BRN/GRY WIRE COMPUTER DATA LINES SYSTEM DIMMING CTRL DISPLAY SIG + ENABLE SIG ENTERTAINMENT REMOTE ENTERTAINMENT REMOTE ENABLE SIG GRN/WHT WIRE GRN/YEL WIRE GRY WIRE GRY/GRN WIRE GRY/VIO WIRE HEADPHONE COMMON SIG HOT AT ALL TIMES HUMAN MACHINE INTERFACE CONTROL MODULE HUMAN MACHINE INTERFACE CONTROL MODULE BYPASS MODULE INADVERTENT PWR CTRL INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL JUNCTION BLOCK INTERIOR LAMP CTRL LED AMBIENT LIGHTING CTRL 2 LOGIC AUDIO/VIDEO INPUT ADAPTER LOW SPEED GMLAN SERIAL DATA LR SEAT AUDIO HEADPHONE SIG LVDS LVDS GY INFOTAINMENT DISPLAY SIG LVDS LVDS MEDIA DISC PLAYER MOST CONTROL MOST SERIAL DATA (+) NCA WIRE RDO FUSE REAR AUDIO LOW REF RED/GRN WIRE RED/VIO WIRE RIGHT INSTRUMENT PANEL FUSE BLOCK RR SEAT AUDIO HEADPHONE SIG RSE FUSE USB VIO/GRN WIRE W/ REAR SEAT ENTERTAINMENT W/ REAR SEAT ENTERTAINMENT W/O REAR SEAT ENTERTAINMENT WH INFOTAINMENT DISPLAY SIG WH LVDS WHT/BRN WIRE WHT/LT GRN WIRE WHT/VIO WIRE Y-BK USB YEL WIRE