Chevrolet Chevy Express G3500 (1996-2012) Computer data lines

3 2 PPL 5.0L, 5.7L GAS 4.3L, 8.1L GAS 6.5L DIESEL 8.1L ABS SERIAL DATA BLK WIRE BLK/WHT WIRE CONVENIENCE CENTER (UNDER LEFT SIDE OF DASH) DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) HOT AT ALL TIMES I/P FUSE BLOCK INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER LEFT FRONT SEAT) ORG/ WIRE PASSLOCK MODULE (BELOW CENTER OF DASH) POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF DASH) PPL PPL 4.3L, 6.5L DIESEL ONLY PPL 5.0L, 5.7L GAS ONLY PPL SERIAL DATA PROG SIGNAL PWR AUX FUSE 7 RADIO REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (BEHIND CENTER OF DASH) SERIAL DATA TAN/WHT WIRE