GMC Savana G3500 (1996-2013) 6.6l vin 2, computer data lines circuit

BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) CHIME MODULE (BEHIND CENTER OF DASH) COOLANT HEATER (ATTACHED TO LEFT INNER FRAME RAIL) DATA CLSS 2 DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (IN ENGINE COMPT, ON LEFT INNER FENDER) ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) GLOW PLUG CONTROL MODULE (GPCM) (LEFT REAR OF ENGINE) GRY WIRE HI SPD GMLAN SERIAL DATA HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER LT BLU WIRE LT GRN WIRE LTR FUSE 30 NCA WIRE PNK DATA CLSS 2 WIRE POWER DISTRIBUTION SYSTEM PPL RADIO RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (BEHIND CENTER OF DASH) SPLICE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL MODULE (TCM) (ON RIGHT FRAME RAIL) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) VEHICLE COMMUNICATIONS INTERFACE MODULE (VCIM) (BELOW STEERING COLUMN) W/ AUXILIARY HEATER W/O ACTIVE HANDLING W/ ACTIVE HANDLING W/O AUXILIARY HEATER W/O RADIO WHT WIRE YEL WIRE