GMC Sierra III facelift (2015-2018) w/ ventilation heater Wiring diagrams

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

BACK SEAT BACK SEAT HEAT IND BACK SEAT HEAT SWITCH BLK WIRE COMPUTER DATA LINES SYSTEM COOLING HEAT IND DRIVER BACK SEAT BLOWER MOTOR DRIVER CUSHION SEAT BLOWER MOTOR FRONT SEAT COOLING FRONT SEAT COOLING HEAT IND FRONT SEAT) GRN/VIO WIRE HEAT IND HEAT SWITCH HIGH HEAT IND LOW HEAT IND LT GRN/WHT WIRE MEDIUM HEAT IND PASSENGER BACK SEAT BLOWER MOTOR PASSENGER CUSHION SEAT BLOWER MOTOR PASSENGER SEAT HEATING, COOLING SWITCH RED/GRN WIRE RED/GRY WIRE SEAT CUSHION HEAT IND SEAT CUSHION HEAT SWITCH SEAT CUSHION) VIO/WHT WIRE W/ VENTILATION HEATER