GMC Sierra III facelift (2015-2018) Pass-key circuit

2500 HD, 3500 HD 1500 ANTENNA BATT POSITIVE VOLT BCM 3 FUSE BLK WIRE BLK/YEL WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN/GRN WIRE COMPUTER DATA LINES SYSTEM DATA 1 (+) DK BLU WIRE DRIVER INFORMATION CENTER DISPLAY ENGINE CONTROL MODULE GMLAN SERIAL GMLAN SERIAL DATA - 1 GRN/GRY WIRE GRN/VIO WIRE GRY/BLK WIRE GRY/GRN WIRE HOOD AJAR SW SIG HOT AT ALL TIMES IMMOBILIZER CONTROL MODULE (NEAR IGNITION CYLINDER) IMMOBILIZER RETURN IMMOBILIZER SPLY VOLT INSTRUMENT CLUSTER LEFT INSTRUMENT PANEL FUSE BLOCK LIN BUS 11 LO SPD GMLAN SERIAL DATA LOGIC LOW REF RED/GRY WIRE RETURN SECURITY INDICATOR SPLY VOLT SW SIG WHT WIRE YEL WIRE