Chevrolet Silverado 3500 (2002-2006) blk/wht Wiring diagrams

AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL COMPUTER DATA LINES DK GRN WIRE FUSE HOLDER FUSIBLE LINK GENERATOR GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA LEFT BATTERY LOGIC PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPARTMENT) RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO WRECKER OPTION

AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL COMPUTER DATA LINES DK GRN WIRE FUSE HOLDER FUSIBLE LINK GENERATOR GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA LEFT BATTERY LOGIC PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPARTMENT) RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO WRECKER OPTION

40 33 (DIESEL) (GAS) ABS FUSE ANTI-LOCK IND BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON LEFT SIDE OF BRAKE FLUID RESERVOIR) BRAKE IND BRN WIRE BRN/WHT WIRE CLUTCH START SWITCH (M/T) (TOP OF CLUTCH CLUTCH ASSY) CPP SW SIG DEL TORQUE SIG DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) EXCEPT SEO GASOLINE DIESEL GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) BRAKE FUSE IGN E FUSE IGNITION INSTRUMENT CLUSTER LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) BRAKE INPUT LEFT FRONT WHEEL SPEED SENSOR LOGIC LT BLU WIRE LT GRN/BLK WIRE NCA WIRE OF TRANSFER CASE) OF TRANSMISSION) ORG/BLK WIRE PNK WIRE POWERTRAIN OR ENGINE CONTROL MODULE (PCM OR ECM) (ON LEFT FRONT OF ENG COMPT) PPL PPL DATA LINK CONNECTOR (DLC) (BELOW STEERING COLUMN) PPL PPL PPL/WHT WIRE RED WIRE RIGHT FRONT WHEEL SPEED SENSOR SEO SEO IGN FUSE STOPLAMP SWITCH (ON TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC BRAKE SW TRACTION CONTROL IND (IF EQUIPPED) TRACTION CONTROL SWITCH TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENG COMPT) TRANSMISSIONS SYSTEM TRANSMISSIONS SYSTEM (TRANSFER CASE CIRCUIT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW VSS OUTPUT YEL WIRE YEL/BLK WIRE

80 13 45 21 14 33 43 41 58 15 (GASOLINE) (DIESEL) A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) AMBIENT AIR TEMPERATURE SENSOR (IN RIGHT FRONT BUMPER FILLER ASSEMBLY AUTO BLK WIRE BLK/WHT WIRE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL PROCESSOR (BEHIND RIGHT SIDE OF DASH) BLWR FUSE BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FAN DN FAN UP FRT DEF GROUND GROUND TEMP SEN ASS CTRL BLOWER SPEED CTRL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P RELAY BLOCK (LEFT SIDE OF DASH) INSIDE AIR TEMPERATURE SENSOR ASSEMBLY (IN HEADLINER ABOVE DRIVER) INST LAMP DIM CTRL GROUND LEFT TEMP CONTROL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL LOGIC LOW REF LOWER LEFT AIR TEMPERATURE SENSOR (LEFT END OF HVAC MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (BOTTOM OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RECIR RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UPPER LEFT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) UPPER RIGHT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE DK BLU WIRE DK GRN/WHT WIRE ENG ON SIG ENGINE ON SIGNAL EXCEPT 6.0L 6.0L GENERATOR GENERATOR BATTERY CONTROL MODULE GRD HOT AT ALL TIMES I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT INSTRUMENT CLUSTER SYSTEM PNK WIRE PRESSURE DIFFERENTIAL SBA FUSE SUPPLEMENTAL BRAKE SIG UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT) VACUUM PUMP MOTOR VEHICLE SPD SIG

80 13 45 27 14 35 43 31 58 9 (GASOLINE) (DIESEL) A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON SWITCH A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR (UNDER RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL SWITCH BLOWER MOTOR RELAY BLOWER MOTOR RESISTOR ASSEMBLY (ON HVAC MODULE, NEAR BLOWER MOTOR) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FRT DEF GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HTR A/C FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P RELAY BLOCK (LEFT SIDE OF DASH) INST LAMP DIM CTRL GROUND LEFT TEMP CONTROL LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE CONTROL MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF OFF BLOW MT CTRL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RECIRC SWITCH RED WIRE RED/BLK WIRE RIGHT TEMP CONTROL RUN WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/BLK WIRE YEL WIRE

1694 1478 TRANSMISSION SYSTEM 2755 2530 5425 LOW REF FUEL PRESS VOLT INJ + GROUP 4 INJ 6 INJ 3 2931 6265 LOW REF CMP SENSOR SIG 492 432 MAF SENSOR SIG TURBOCHARGER SIG TUR VANE POS SIG APP SENSOR 2 SIG BLK WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) COOLANT LEVEL SIG COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM CRUISE SET SW SIG DK BLU WIRE DK BLU/WHT WIRE EGR VAL POS SIG ECT SENSOR SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) ENGINE OIL LEVEL SWITCH (LEFT REAR OF OIL PAN) EXHAUST GAS RECIRCULATION (EGR) VALVE GRN WIRE GRY WIRE GRY/BLK WIRE IAT SENSOR 2 SIG IAT SENSOR SIG LOW REF LOW REF ENG SHUTOFF SIG CPP SW SIG LOW REF TUR VANE POS INJ + GROUP 3 INJ 5 INJ 4 5930 5423 PPL 845 844 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL PRESS SIG ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PTO ON SW SIG CRUISE ON SW SIG LOW REF LOW REF 397 552 CRUISE CONTROL SYSTEM RED/BLK WIRE STARTING/ CHARGING SYSTEM STARTER ENABLE FUEL PRESS INJ + GROUP 2 2834 5422 TAN WIRE TAN/WHT WIRE TURBOCHARGER VANE POSITION CONTROL SOLENOID VALVE WATER IN FUEL SENSOR (ON FUEL FILTER ELEMENT) WHT WIRE YEL WIRE YEL/BLK WIRE

A/T ACCELERATOR PEDAL POSITION SENSOR (BEHIND ACCELERATOR PEDAL) BLK WIRE BLK/WHT WIRE BRN WIRE BUS - COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE FUSIBLE LINK 3 GLOW PLUG 1 GLOW PLUG 2 GLOW PLUG 3 GLOW PLUG 4 GLOW PLUG 5 GLOW PLUG 6 GLOW PLUG 7 GLOW PLUG CONTROL MODULE (GPM) GLOW PLUG FUSE GLOW PLUGS GRD GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IAH COMM 1 IAH COMM 2 IAH CURRENT SIG IAH SIG IAH TEMP SIG IAH VOLT SIG IGN 0 IGN 1 INTAKE AIR HEATER (IAH) MODULE LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE M/T ORG/ WIRE ORG/BLK WIRE PNK 1 2 WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/BLU WIRE RED/GRN WIRE RED/LT GRN WIRE RED/WHT WIRE TAN WIRE TAN/BLK WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/LT GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BLK WIRE

2 3 4 5 6 7 8 PNK WIRE 9 10 11 12 13 PNK WIRE AXLE SW SIG BACKUP VOLT BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY RELAY BLOCK BRN WIRE CKP SENSOR SIG CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK BLU/WHT WIRE ECM FUSE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FRP SENSOR SIG FUEL PRESSURE REGULATOR GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC, RUN, START HOT IN RUN BRAKE FUSE HOT IN RUN, START I/P FUSE BLOCK I/P FUSE BLOCK IGN 0 FUSE IGN 1 INJ 1 INJ 2 INTAKE AIR HEATER FUSE INTAKE AIR TEMPERATURE (IAT) SENSOR 2 INTAKE AIR TEMPERATURE (IAT)/ MASS AIRFLOW (MAF) SENSOR (IN AIR INDUCTION TUBE) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 1 2 WIRE PNK 23 24 25 26 27 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 28 29 30 31 PPL/WHT WIRE RED WIRE RED/BLK WIRE STOPLAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TRANSMISSION SYSTEM TUR VAN POS UNDER- HOOD FUSE BLOCK WATER IN FUEL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

12 13 14 PNK WIRE 2 3 4 5 6 7 8 PNK WIRE 20 21 PPL 9 10 11 12 13 PNK WIRE ACTUATOR FUSE BLK WIRE BLK/WHT WIRE BRN WIRE CLOSED BELOW 8 DEG C (46 DEG F) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM RELAY ECM-B FUSE ECU FUSE F/ PUMP RELAY FUEL HEATER (TOP OF FUEL FILTER ELEMENT) FUEL HTR FUSE FUEL INJECTORS FUEL RAIL PRESSURE SENSOR (UNDER INTAKE MANIFOLD SHIELD, ON FUEL RAIL) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 23 24 25 26 27 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 28 29 30 31 PPL/WHT WIRE RED/BLK WIRE TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT/BLK WIRE YEL WIRE YEL/BLK WIRE