Chevrolet Silverado 1500 (2000-2012) power distribution system Wiring diagrams

14 13 15 LOW REF STP CP SW SIG 5 VOLT REF 2501 2500 COMPUTER DATA LINES SYSTEM ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL BATT + BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE PEDAL POSITION (BPP) SENSOR BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DIM FUSE 7 DK BLU WIRE DK GRN WIRE ECM BATT FUSE 12 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) GMLAN DATA BUS- GRN/WHT WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED/WHT WIRE RES+ SER DATA SET- SOUND SYSTEMS TAN WIRE TAN/BLK WIRE TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON TRANSFER CASE TAILSHAFT HOUSING) VSS HI SIG VSS LO SIG W/ ACTIVE 2 SPEED PUSH BUTTON CONTROL TRANSFER CASE W/O ACTIVE 2 SPEED PUSH BUTTON CONTROL TRANSFER CASE WHT WIRE WHT/BLK WIRE YEL WIRE

335 5128 54 41 MED SPD FAN RLY HI SPD FAN RLY PPL AUXILIARY FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ENG FUSE 4 ENGINE CONTROL MODULE (ECM) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) FAN 1 FUSE FAN CNTRL RELAY FAN HI RELAY FAN LO RELAY FAN MID 1 RELAY FAN MID 2 RELAY FAN RESISTOR FAN-2 FUSE GMLAN L GRY WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED HVAC CONTROL MODULE LEFT COOLING FAN (LEFT FRONT OF ENGINE COMPT) LEFT ENGINE COOLING FAN RESISTOR LOGIC LT BLU WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RIGHT COOLING FAN (RIGHT FRONT OF ENGINE COMPT) RIGHT ENGINE COOLING TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

10 11 DATA BUS + DATA BUS - 14 13 15 LOW REF STP LP SW SIG 5 VOLT REF 20 33 47 36 35 49 37 BATT + 66 67 VSS HI SIG VSS LO SIG ACCELERATOR PEDAL POSITION (APP) SENSOR (ABOVE ACCELERATOR PEDAL) APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF PPL AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (OSS) SENSOR BATT + BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE PEDAL POSITION (BPP) SENSOR BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DIM FUSE 7 DK BLU WIRE DK GRN WIRE ECM BATT FUSE 12 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GRN/WHT WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE ORG/WHT WIRE OUT SPD SENS (OSS) SIG OUT SPD SENS (OSS) SIG PNK TRANSMISSIONS SYSTEM WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED/WHT WIRE RES+ SER DATA SER DATA BUS - SET- SOUND SYSTEMS TAN WIRE TAN/BLK WIRE TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE

10 11 13 14 DATA BUS + DATA BUS - DATA BUS - DATA BUS + 14 13 15 LOW REF STP CP SW SIG 5 VOLT REF 42 26 54 22 58 38 LOW REF BRK APPLY SENS SPLY SUPPLY VOLT 6.0L APP SEN 1 SIG LOW REF APP SEN 2 SIG LOW REF VSS LO SIG VSS HI SIG PPL AUTOMATIC TRANSMISSION BATT + BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE PEDAL POSITION (BPP) SENSOR BRN WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRUISE CONTROL IND DIMMING SIG CRUISE CONTROL SWITCH SIGNAL CRUISE IND CRUISE SWITCH DIM FUSE 7 DK BLU WIRE DK GRN WIRE ECM BATT FUSE 12 ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.0L GRN WIRE GRN/WHT WIRE GROUND GROUND DISTRIBUTION SYSTEM GRY WIRE HI SPD GMLAN SER DATA BUS- HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INPUT SHAFT SPEED SENSOR (ISS) INPUT SPEED SENSOR (ISS) SIGNAL INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 ISS/OSS SUPPLY VOLTAGE LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE OUTPUT SHAFT SPEED SENSOR (OSS) OUTPUT SPEED SENSOR (OSS) SIGNAL PNK PNK WIRE PNK TRANSMISSIONS SYSTEM COLUMN HARNESS) WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RED WIRE RED/WHT WIRE RES+ SER DATA SET- SOUND SYSTEMS TAN WIRE TAN/BLK WIRE TP SENS 1 SIG LOW REF TP SENS 2 SIG TAC MOTOR CTRL 2 TAC MOTOR CTRL 1 TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ 2 SPEED MANUAL TRANSFER CASE WHT WIRE WHT/BLK WIRE YEL WIRE

1 3 2 6 12-VOLT REF LO SERIAL DATA HI SERIAL DATA GROUND 12 13 12-VOLT REF BRAKE SW SIG PARK BRAKE SW SIG PPL 12-VOLT REF ANGLE SENSOR PHASE B CAN BUS LOW SERIAL DATA 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 COMPUTER DATA BUS + DATA BUS - DATA LINES SYSTEM 2501 2501 COMPUTER DATA LINES SYSTEM 5-VOLT REF VEHICLE SPEED SIGNAL CAN BUS HIGH SERIAL DATA ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE COMPUTER DATA LINES SYSTEM DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LOGIC LOW REF 12-VOLT REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL PPL RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) RIGHT REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) SERIAL DATA SERIAL DATA BATTERY POSITIVE VOLTAGE SERIAL DATA BUS (+) SERIAL DATA BUS (+) BATTERY POSITIVE VOLTAGE SERIAL DATA BUS- SERIAL DATA BUS- GROUND SIG STEERING ANGLE SENSOR (ON STEERING COLUMN) STOP LAMP SWITCH (TOP OF BRAKE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH TRACTION CTRL SW SIG VEHICLE SPD SIG RADIO WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE TRIM PANEL) YEL WIRE YEL/BLK WIRE

12 VOLT REF 12-VOLT REF RF WHEEL SPD SENS SIG GROUND ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR COMPUTER DATA LINES SYSTEM DATA BUS - DIESEL DIESEL GAS DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) EXCEPT LUXURY GAS GRY WIRE GRY/WHT WIRE HEAVY DUTY ABS FUSE 59 (GAS) FUSE 55 (DIESEL) HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT BLU WIRE LUXURY NCA WIRE NEAR FAN SHROUD) ORG/ WIRE ORG/WHT WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL BRAKE SW SIG RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SERIAL DATA SIG TAN WIRE TAN/BLK WIRE VEHICLE SPD SIG VEHICLE SPD SIG RADIO YEL WIRE YEL/BLK WIRE

2-3 SHIFT SOL ACC WAKE UP DATA BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE FUSE 19 GRY WIRE GRY/WHT WIRE HI SPD GMLAN DATA (-) HI SPD GMLAN DATA (+) HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED LEFT I/P JUNCTION BLOCK LOW REF TR SW B SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MISC-IGN FUSE 43 ORG/ WIRE ORG/BLK WIRE P/N PARK/NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PNK PNK PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL/WHT WIRE RED/BLK WIRE RED/WHT WIRE REPLICATED TOS SIG HI SPD GMLAN DATA (-) HI SPD GMLAN DATA (+) STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC SOL VALVE CTRL TCM- BATT FUSE 14 TFT SENS SIG TR SW A SIG LOW REF IGN 1 VOLT BATTERY TR SW C SIG TR SW P SIG PC SOL HI VSS HI SIG BRK SW SIGN TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON TRANSMISSION TAILSHAFT HOUSING) VSS LOW PC SOL LOW W/O 2 SPEED TRANSFER CASE WHT WIRE YEL WIRE YEL/BLK WIRE

13 14 39 DATA BUS (-) DATA BUS (+) 2501 2500 1786 COMPUTER DATA LINES SYSTEM 51 72 GMLAN DATA BUS (-) GMLAN DATA BUS (+) 66 67 REPLICATED TOS SIG VSS SIG AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR SIGNAL BATT + GND BRAKE PEDAL SIG BLK/WHT WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALUE ASSEMBLY DK BLU WIRE DK GRN WIRE DRIVE MOTOR GENERATOR POWER INVERTER MODULE DRIVER INFORMATION CENTER (DIC) DISPLAY ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FUSE 19 GMLAN HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED IGN INSTRUMENT CLUSTER PANEL (IPC) INTERNAL MODE SW (IMS) GND LEFT I/P JUNCTION BLOCK LOGIC LOW REFERENCE LT BLU/WHT WIRE LT GRN/BLK WIRE MISC-IGN FUSE 43 ORG/BLK WIRE PC SOLENOID 1 CONTROL PC SOLENOID 2 CONTROL PC SOLENOID 3 CONTROL PC SOLENOID 4 CONTROL PC SOLENOID 5 CONTROL PC SOLENOID 6 CONTROL PNK PNK PNK PNK WIRE PNK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL/WHT WIRE PRESSURE CONTROL (PC) SOLENOID VALVE 1 PRESSURE CONTROL (PC) SOLENOID VALVE 2 PRESSURE CONTROL (PC) SOLENOID VALVE 3 PRESSURE CONTROL (PC) SOLENOID VALVE 4 PRESSURE CONTROL (PC) SOLENOID VALVE 5 PRESSURE CONTROL (PC) SOLENOID VALVE 6 RED/WHT WIRE REPLICATED TOS SIGNAL SERIAL DATA BUS (+) SERIAL DATA BUS (-) SHIFT SOLENOID (SS) 1 CONTROL SHIFT SOLENOID (SS) 2 CONTROL SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TCM- BATT FUSE 14 TO AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) (DIAGRAM 2 OF 2) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON TRANSFER CASE TAILSHAFT HOUSING) W/0 ACTIVE TWO SPEED PUSH BUTTON CONTROL TRANSFER CASE WAKE UP SERIAL DATA SERIAL DATA BUS (+) SERIAL DATA BUS (-)

6.6L EXCEPT 6.6L, 4.3L 4.3L BLK WIRE DRIVER OUTSIDE REARVIEW MIRROR EXCEPT 6.6L 6.6L HOT AT ALL TIMES HTD MIR FUSE 53 FUSE 51 LOGIC HVAC CONTROL MODULE MANUAL A/C AUTOMATIC A/C NCA WIRE ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR POWER DISTRIBUTION SYSTEM REAR DEFOG RELAY REAR DEFOGGER IND REAR DEFOGGER SWITCH RED WIRE RED/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

7 3 SUPPLY VOLT LOW REF BATTERY BLK WIRE COMPUTER DATA LINES SYSTEM DDM FUSE 4 DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE GROUND HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, LOGIC LOW REF ORG/ WIRE PASSENGER DOOR LOCK/WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PDM FUSE 9 POWER DISTRIBUTION SYSTEM REAR DEFOGGER IND REAR DEFOGGER SWITCH RED WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SERIAL DATA SUPPLY VOLT WHT WIRE