Chevrolet Silverado 1500 (2000-2012) computer data lines system Wiring diagrams

A/C CL CTRL A/C PRESS SIG LO REF AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AXL SW SIG BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BLK/WHT WIRE BRK SW SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FRONT FUEL PUMP, SENDER ASSEMBLY (IN FRONT FUEL TANK) FUEL CTRL FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GMLAN - GMLAN + GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN IAT SIG LO REF LO REF LO REF LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MAF SIG MIL IND PPL NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL FUEL LVL-PRI CFAN HI CTRL ACC SER DATA PPL LO REF FTP SIG PPL/WHT WIRE PWTN RLY CTRL RED/WHT WIRE STARTING/ CHARGING SYSTEM STRT RLY CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOS SIG OR VSS HI SIG VSS LO SIG GND 71 72 73 TRANSMISSIONS SYSTEM VSS CFAN LO CTRL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-IGN FUSE 56 FSCM FUSE 21 FSCM SHIELD FUEL CTRL FUEL LINE PRESSURE SENSOR (UNDER LEFT SIDE OF VEHICLE) FUEL PRESS FUEL SYSTEM CONTROL MODULE (FSCM) (UNDER REAR GMLAN GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED LO REF LT BLU WIRE NCA WIRE OF VEHICLE) PNK WIRE PNK/BLK WIRE PPL PUMP RED/WHT WIRE SER DATA EN TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

AUX HVAC-IGN FUSE 48 BANK 2 SENSOR 1 (UPSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) ENGINE OIL PRESSURE IND FROM INJ-B FUSE (DIAGRAM 3 OF 6) GRY WIRE GRY/BLK WIRE GRY/WHT PNK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC FUSE 46 HOT W/ RUN/CRNK RELAY ENERGIZED IGN 1 GND IGN B+ MALFUNCTION INDICATOR LAMP INSTRUMENT PANEL CLUSTER (IPC) KNOCK SENSOR (KS) 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR (KS) 2 (LOWER RIGHT SIDE OF ENGINE) LO BUS LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PNK PNK WIRE PPL/WHT WIRE RED/WHT WIRE SNSR FUSE 18 TAN PPL/WHT WIRE TAN WIRE TAN/WHT WIRE W/ BASE BODY OR CHASSIS BODY EQUIPMENT W/O BASE BODY OR CHASSIS BODY EQUIPMENT WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

A/C CL CTRL A/C PRESS SIG LO REF AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AXL SW SIG BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BLK/WHT WIRE BRK SW SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FRONT FUEL PUMP, SENDER ASSEMBLY (IN FRONT FUEL TANK) FUEL CTRL FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GMLAN - GMLAN + GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN IAT SIG LO REF LO REF LO REF LT BLU WIRE LT BLU/WHT WIRE LT GRN/BLK WIRE MAF SIG MIL IND PPL NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL FUEL LVL-PRI CFAN HI CTRL ACC SER DATA PPL LO REF FTP SIG PPL/WHT WIRE PWTN RLY CTRL RED/WHT WIRE STARTING/ CHARGING SYSTEM STRT RLY CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TOS SIG OR VSS HI SIG VSS LO SIG GND 71 72 73 TRANSMISSIONS SYSTEM VSS CFAN LO CTRL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-IGN FUSE 56 FSCM FUSE 21 FSCM SHIELD FUEL CTRL FUEL LINE PRESSURE SENSOR (UNDER LEFT SIDE OF VEHICLE) FUEL PRESS FUEL SYSTEM CONTROL MODULE (FSCM) (UNDER REAR GMLAN GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED LO REF LT BLU WIRE NCA WIRE OF VEHICLE) PNK WIRE PNK/BLK WIRE PPL PUMP RED/WHT WIRE SER DATA EN TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

AUX HVAC-IGN FUSE 48 BANK 2 SENSOR 1 (UPSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) ENGINE OIL PRESSURE IND FROM INJ-B FUSE (DIAGRAM 3 OF 6) GRY WIRE GRY/BLK WIRE GRY/WHT PNK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC FUSE 46 HOT W/ RUN/CRNK RELAY ENERGIZED IGN 1 GND IGN B+ MALFUNCTION INDICATOR LAMP INSTRUMENT PANEL CLUSTER (IPC) KNOCK SENSOR (KS) 1 (LOWER LEFT SIDE OF ENGINE) KNOCK SENSOR (KS) 2 (LOWER RIGHT SIDE OF ENGINE) LO BUS LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PNK PNK WIRE PPL/WHT WIRE RED/WHT WIRE SNSR FUSE 18 TAN PPL/WHT WIRE TAN WIRE TAN/WHT WIRE W/ BASE BODY OR CHASSIS BODY EQUIPMENT W/O BASE BODY OR CHASSIS BODY EQUIPMENT WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

ACCELERATOR PEDAL BANK 1 SENSOR 1 (UPSTREAM OF LEFT CATALYTIC CONVERTER) BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM BATT FUSE 12 ECM-IGN FUSE 56 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE (UNDER REAR OF VEHICLE) EXTERIOR LIGHTS SYSTEM ANTI-THEFT SYSTEM FAN RLY CTRL VENT SOL CTRL FSCM FUSE 21 FUEL PRESSURE SENSOR GRY WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES HOT W/ RUN/ CRNK RELAY ENERGIZED IGN B+ DATA ENGINE OIL PRESSURE MIL IND IND INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 KNOCK SENSOR (KS) 1 (LOWER LEFT SIDE OF ENGINE) LOGIC LOW REF LOW REF PPL LT BLU WIRE LT BLU/WHT WIRE MIL CTRL PUMP RLY CTRL NCA WIRE PEDAL SW SIG AJAR SW SIG LOW REF PNK PPL WIRE PNK WIRE PNK/BLK WIRE POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) POWER DISTRIBUTION SYSTEM PPL PPL HOOD SW SIG PPL LEVEL SENS SIG PPL/WHT WIRE RED/WHT WIRE RLY COIL CTRL FAN RLY CTRL PPL SENS 1 SIG PRESS SENS SIG SENS 2 SIG TAC MTR CTRL 1 TAC MTR CTRL 2 IGN VOLT PHASER CTRL TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCM- BATT FUSE 14 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WAKE-UP SIG IGN VOLT B+ VOLT PNK WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BARE (SHIELD BLUNT CUT) BLK WIRE BREAKOUT) BRN WIRE COMPUTER DATA LINES SYSTEM DATA BUS - DK GRN WIRE DK GRN/WHT WIRE EXTENSION FRONT FUEL PUMP, SENDER ASSEMBLY (IN FRONT FUEL TANK) FUEL PUMP FLOW CONTROL MODULE FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GRY WIRE GRY/WHT WIRE IGN VOLT IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 4 IGNITION COIL 5 IGNITION COIL 6 IGNITION COIL 7 IGNITION COIL 8 (UPPER RIGHT SIDE OF ENGINE) LINES SYSTEM COMPUTER DATA LOW REF LT BLU WIRE LT BLU/WHT WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PUMP CTRL RED WIRE RED/WHT WIRE REF VOLT RELAY CTRL SENS SIG SERIAL DATA SHIELD SPARK PLUG TAN WIRE TAN/BLK WIRE YEL WIRE

6 SHUTOFF SOL 1 SHUTOFF SOL AIR CONDITIONING SYSTEM BANK 2 SENS 1 BANK 2 SENS 1 BANK 2 SENS 1 BANK 2 SENS 2 BANK 2 SENS 2 PPL PPL BANK 2 SENSOR 1 BANK 2 SENSOR 2 BAROMETRIC PRESSURE (BARO) SENSOR BLK LT GRN/ WIRE BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COOLING FANS SYSTEM AIR CONDITIONING SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECT SENS SIG ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) GRY WIRE HYBRID SYSTEM CIRCUIT LOW REF LOW REF LOW REF LOW REF LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PRESS SENS SIG PRESS SENS SIG MAP SENS SIG PT LAN - PUMP MTR GND TAN WIRE TAN/BLK WIRE TRANSMISSIONS SYSTEM VALVE LIFTER OIL MANIFOLD (VLOM) ASSEMBLY (BELOW INTAKE MANIFOLD) YEL WIRE

2501 2500 904 904 904 904 968 2139 COMPUTER DATA LINES SYSTEM 33 53 PT LAN- PT LAN+ 988 983 984 983 PNK WIRE AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BLK WIRE BLU WIRE BRN WIRE CIRCUIT CIRCUIT 1 CIRCUIT 2 COMPUTER DATA LINES SYSTEM CONT CTRL PUMP CTRL B+ B+ CONTROL SOLENOID VALVE ASSEMBLY CUT) (SHIELD BLUNT DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRAIN WIRE DRIVE MOTOR GENERATOR POWER INVERTER MODULE (RIGHT REAR OF ENGINE COMPT) EARLY PRODUCTION LATE PRODUCTION ENGINE CONTROL MODULE (ECM) ENGINE CONTROLS CIRCUIT ENGINE CONTROLS CIRCUIT 6272 7654 EXCITATION EXCITATION CIRCUIT FLUID PUMP GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES AUXILIARY PIM 2 FUSE FUSE 9 BLOCK (LEFT SIDE OF ENGINE COMPT) IGN INTER MODE GND LOW REFERENCE TEMP SENS A LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MEGA FUSE NCA WIRE ORG/ WIRE ORG/BLK WIRE PHASE A PHASE B PHASE C PIM 1 FUSE 8 PNK WIRE PNK/WHT WIRE PPL PPL INTER MODE S PT LAN- PT LAN+ PUMP CTRL RED WIRE RED/WHT WIRE RESOL MTR A+ RESOL MTR A+ RESOL MTR B- RESOL MTR B+ TEMP SENS A SER DATA BUS- SER DATA BUS+ TAN WIRE TAN/BLK WIRE TEMP SENS B TRANS PUMP FUSE TRANSMISSION CONTROL MODULE (TCM) WAKE UP SIG IGN VOLT WHT WIRE WHT/BLK WIRE YEL WIRE