GMC Savana G2500 (1996-2013) computer data lines system Wiring diagrams

22 27 21 6.6L 4.3L EXCEPT 4.3L 55 43 44 9 28 27 BRAKE SIG SER DATA BUS(+) SER DATA BUS(-) 66 46 6.6L 53 57 40 59 32 16 3 65 35 63 5 6 ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL BATT + BCM 2 FUSE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRAKE APPLY SEN SIG BRAKE LOW REF BRAKE PEDAL POSITION (BPP) SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BRAKE SENS SIG BRAKE SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE ENGINE CONTROL MODULE (ECM) GMLAN SER DATA GROUND GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY 15 ENERGIZED IGN INFLATABLE RESTRAINT STEERING WHEEL INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE LOGIC LOW REF LOWER RIGHT FRONT OF ENGINE) LT BLU WIRE LT BLU/WHT WIRE MODULE COIL (AT TOP OF STEERING COLUMN) PNK WIRE PPL RED/WHT WIRE SPLY VOLT TAN WIRE TAN/BLK WIRE THROTTLE BODY (EXCEPT 6.6L) (4.8L, 5.3L, 6.0L: ON LEFT SIDE OF THROTTLE BODY) TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

AUTOMATIC TRANSMISSION ASSEMBLY BLK WIRE BREAKOUT) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY AUTOMATIC TRANSMISSION (6 SPEED A/T) CRUISE SWITCH DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GRY WIRE HOT W/ RUN/CRANK RELAY 15 ENERGIZED INSTRUMENT PANEL CLUSTER LEFT STEERING WHEEL CONTROL SWITCH LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE ORG/BLK WIRE PNK WIRE PPL/WHT WIRE RED WIRE RES+ SET- TAN WIRE TAN/BLK WIRE TRANS FUSE TRANSMISSION CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION INPUT SHAFT SPEED (OSS) SENSOR TRANSMISSION INPUT SHAFT SPEED SENSOR TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR TRANSMISSION OUTPUT SHAFT SPEED SENSOR (RIGHT REAR SIDE OF TRANSMISSION) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT LT BLU/ WIRE WHT WIRE YEL WIRE

24 39 31 16 LOW REF SENS SIG PPL 2759 1589 (OR 6049) 4.3L 4.8L/5.3L/6.0L 6.6L 2 3 44 43 DATA BUS(-) DATA BUS(+) 50 41 36 35 331 2705 4 30 SENS SIG 58 28 1589 2759 PPL 6 7 8 9 PPL PNK WIRE 7 8 PPL 9 10 PPL BLK WIRE BLK/WHT WIRE BLU WIRE BLU/YEL WIRE BRN WIRE CARGO DOOR LATCH ASSEMBLY (W/ CARGO/PASSENGER) (IN RIGHT REAR CARGO DOOR) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) SWITCH ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) GRY WIRE GRY/BLK WIRE ILLUMI- NATION LEFT SLIDING DOOR AJAR SWITCH (W/ LEFT REAR HINGED DOOR) LOW REF PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PERSON- ALIZATION VEHICLE INFO PNK WIRE PNK/BLK WIRE PPL PPL 2 3 RIGHT SLIDING DOOR AJAR SWITCH (W/ CARGO/PASSENGER) SENS SIG SENS SIG LOW REF SET/ RESET SWITCH SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP/ FUEL W/ BRAKE WARNING INDICATOR SYSTEM WATER IN-FUEL SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LH AUDIO SIG (+) RH AUDIO SIG (+) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ LF MID OUT (+) RF MID OUT (+) 1959 1955 LR MID OUT (-) RR MID OUT (-) 2 1 8 LO REF 658 1782 VOICE SIG DRAIN WIRE HI SPD GMLAN ANTENNA IN BATT POSITIVE VOLT BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BREAKOUT) BRN/WHT WIRE CELLULAR, DIGITAL RADIO ANTENNA CELLULAR/ NAVIGATION ANTENNA COAX COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CUTAWAY UPFITTER DIGITAL RADIO RECEIVER (LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE GRY WIRE HOT AT ALL TIMES INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (AT TOP OF STEERING COLUMN) INFO LED DIMMING CTRL GND LF MID OUT (-) RF MID OUT (-) LEFT CARGO DOOR SPEAKER (IF EQUIPPED) LEFT FRONT SPEAKER LEFT REAR SPEAKER LH AUDIO SIG + RH AUDIO SIG + LO GMLAN SERIAL DATA LO REF LO SERIAL DATA LR MID OUT (+) RR MID OUT (+) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MUTE NCA WIRE ORG/ WIRE PASSENGER/ CARGO PNK WIRE RADIO RADIO ANTENNA RDO/ CHIME FUSE 20 RED/WHT WIRE RIGHT CARGO DOOR SPEAKER (IF EQUIPPED) RIGHT FRONT SPEAKER RIGHT REAR SPEAKER RIGHT STEERING WHEEL CONTROL SWITCH SEEK DOWN SEEK UP SOURCE STEERING WHEEL CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE USB CABLE USB CHARGE USB RECEPTACLE VEHICLE COMMUNICATION INTERFACE MODULE (VICM) (BELOW STEERING COLUMN) VOICE SIG VOL DOWN VOL UP W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE

ANTENNA ANTENNA IN ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) CAMERA SIG + VOICE SIG PNK WIRE CAMERA SIG - LOW REF COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GND RF MID OUT (+) LF MID OUT (+) RR MID OUT (+) LR MID OUT (+) GRY WIRE HOT AT ALL TIMES LO REF LED DIMMING CTRL LO SERIAL DATA LT BLU WIRE LT BLU/BLK WIRE NAVIGATION ANTENNA NAVIGATION SYSTEM ORG/ WIRE PNK 11 12 WIRE PNK/BLK WIRE RADIO RDO/ CHIME FUSE 20 RED/WHT WIRE RF MID OUT (-) LF MID OUT (-) RR MID OUT (-) LR MID OUT (-) TAN WIRE USB CABLE USB RECEPTACLE VEHICLE SPD SIG VOICE SIG W/ VEHICLE COMMUNICATION SYSTEM W/O VEHICLE COMMUNICATION SYSTEM WHT WIRE YEL WIRE

10 12 SERIAL DATA BUS (+) HI SPD GMLAN SERIAL DATA BUS(-) 2 1 8 LO REF VOICE SIG DRAIN WIRE HI SPD GMLAN BARE 2500 2501 COMPUTER DATA LINES SYSTEM 4 2 5 LO REF PNK BARE VOICE SIG DRAIN WIRE ANTENNA IN BARE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BREAKOUT) CELLULAR PHONE, NAVIGATION ANTENNA COAX COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM CUTAWAY UPFITTER DK BLU WIRE DK GRN WIRE INFO LEFT FRONT DOOR SPEAKER LEFT REAR CARGO DOOR SPEAKER LEFT REAR TRIM PANEL SPEAKER (IF EQUIPPED) LO GMLAN SERIAL DATA LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MUTE ORG/ WIRE PASSENGER/ CARGO PNK 11 12 WIRE PNK WIRE PNK/BLK WIRE RIGHT FRONT DOOR SPEAKER RIGHT REAR CARGO DOOR SPEAKER RIGHT REAR TRIM PANEL SPEAKER (IF EQUIPPED) RIGHT STEERING WHEEL CONTROL SWITCH SEEK DOWN SEEK UP SOURCE STEERING WHEEL AIR BAG COIL STEERING WHEEL CTRL TAN WIRE TAN/BLK WIRE VOL DOWN VOL UP WHT WIRE YEL WIRE

6.0L (VIN B) 6.0L VIN G 6.0L VIN B A/C REFRIGERANT PRESSURE SENSOR ACC SER DATA IGN VOLT BATT POS VOLT PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) ANTI-LOCK BRAKES SYSTEM BANK 1 SENSOR 2 BANK 2 SENSOR 2 BLK LT BLU/ WIRE BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BREAKOUT) BRK SENS SPLY BRK SW FUSE BRN WIRE CNG FUEL VEHICLE COMPUTER DATA LINES SYSTEM CUTAWAY LPG FUEL VEHICLE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE ECM IGN/ GLOW PLUG MDL IGN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT RADIATOR TEMPERATURE SENSOR FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL TANK) GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 15 ENERGIZED IAT SENS SIG LOW REF ECT SENS SIG LOW REF LOW REF PRESS SENS SIG PPL LT BLU WIRE LT BLU/ BLK WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MAF SENS SIG LOW REF ORG/BLK WIRE ORG/WHT WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PPL PPL FUEL LEVEL SENS PPL/WHT WIRE PRESS SENS SIG LOW REF PWR/TRN RLY CTRL RED/WHT WIRE RELAY CTRL START RLY CTRL STARTING/ CHARGING SYSTEM STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TOWARDS INSTRUMENT PANEL CLUSTER) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VSS W/ 3 TANK LPG FUEL VEHICLE W/ 4 TANK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH RLY CTRL CNSTR/ VENT/ SOL FUSE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM PWR/TRN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS IGNITION RELAY EVAP SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID (NEAR FRONT OF FUEL TANK) EVEN IGN/ INJ FUSE FLEX FUEL FUSE FUEL INJECTOR 2 FUEL INJECTOR 4 GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL IC 7 CTRL IC 8 CTRL INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LT BLU WIRE LT BLU/BLK (OR BLK) WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MAF/ CNSTR VENT FUSE MALFUNCTION INDICATOR LAMP (MIL) MIL CTRL ODD IGN/INJ FUSE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK (OR RED) WIRE PNK PNK PNK PNK PNK PNK PNK 1 2 3 4 5 6 7 8 WIRE PNK PPL 2 3 4 WIRE PNK PPL PNK PNK PPL WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED/WHT WIRE SNSR 1 (PRE)/ CLS FUSE SNSR 2 (POST) FUSE TOS SIG TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ 3 TANK W/ 4 TANK WHT WIRE YEL WIRE

6.0L (VIN B) 6.0L VIN G 6.0L VIN B A/C REFRIGERANT PRESSURE SENSOR ACC SER DATA IGN VOLT BATT POS VOLT PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (UNDER LEFT SIDE OF DASH) ANTI-LOCK BRAKES SYSTEM BANK 1 SENSOR 2 BANK 2 SENSOR 2 BLK LT BLU/ WIRE BLK WIRE BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR (TOP OF BRAKE PEDAL ASSEMBLY) BREAKOUT) BRK SENS SPLY BRK SW FUSE BRN WIRE CNG FUEL VEHICLE COMPUTER DATA LINES SYSTEM CUTAWAY LPG FUEL VEHICLE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE ECM IGN/ GLOW PLUG MDL IGN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT RADIATOR TEMPERATURE SENSOR FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL TANK) GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 15 ENERGIZED IAT SENS SIG LOW REF ECT SENS SIG LOW REF LOW REF PRESS SENS SIG PPL LT BLU WIRE LT BLU/ BLK WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MAF SENS SIG LOW REF ORG/BLK WIRE ORG/WHT WIRE PNK IGN VOLT WIRE PNK PPL 2 3 4 WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PPL PPL FUEL LEVEL SENS PPL/WHT WIRE PRESS SENS SIG LOW REF PWR/TRN RLY CTRL RED/WHT WIRE RELAY CTRL START RLY CTRL STARTING/ CHARGING SYSTEM STOP LAMP SWITCH (BEHIND LEFT SIDE OF DASH, ABOVE BRAKE PEDAL) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC BRAKE SIG TOWARDS INSTRUMENT PANEL CLUSTER) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VSS W/ 3 TANK LPG FUEL VEHICLE W/ 4 TANK WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLUTCH RLY CTRL CNSTR/ VENT/ SOL FUSE COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ECM PWR/TRN FUSE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS IGNITION RELAY EVAP SOL CTRL EVAPORATIVE EMISSION VENT SOLENOID (NEAR FRONT OF FUEL TANK) EVEN IGN/ INJ FUSE FLEX FUEL FUSE FUEL INJECTOR 2 FUEL INJECTOR 4 GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL IC 7 CTRL IC 8 CTRL INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LT BLU WIRE LT BLU/BLK (OR BLK) WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MAF/ CNSTR VENT FUSE MALFUNCTION INDICATOR LAMP (MIL) MIL CTRL ODD IGN/INJ FUSE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK (OR RED) WIRE PNK PNK PNK PNK PNK PNK PNK 1 2 3 4 5 6 7 8 WIRE PNK PPL 2 3 4 WIRE PNK PPL PNK PNK PPL WIRE PNK PPL PPL 8 9 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED/WHT WIRE SNSR 1 (PRE)/ CLS FUSE SNSR 2 (POST) FUSE TOS SIG TRANSMISSIONS SYSTEM AIR CONDITIONING SYSTEM UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) W/ 3 TANK W/ 4 TANK WHT WIRE YEL WIRE