Chevrolet Silverado 1500 HD (2001-2006) engine controls system Wiring diagrams

1 2 6 8 16 19 20 21 40 42 46 47 48 51 62 63 GND TCC PWM PC SOL HI PC SOL LO 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 3-2 SHIFT SOLENOID A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF LEFT CYLINDER HEAD) EXCEPT SEO FLUID TEMP SENSOR FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START HOT IN RUN, START I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH) INSTRUMENT CLUSTER INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PCM B FUSE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (BELOW STEERING COLUMN) PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV, LO RUN WIRE SEO SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC PWM SOLENOID TCC SOLENOID TOW/HAUL SWITCH TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) PCM 1 FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR THE BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 6 8 16 19 20 21 40 42 46 47 48 51 62 63 GND TCC PWM PC SOL HI PC SOL LO 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 3-2 SHIFT SOLENOID A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF LEFT CYLINDER HEAD) EXCEPT SEO FLUID TEMP SENSOR FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START HOT IN RUN, START I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH) INSTRUMENT CLUSTER INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PCM B FUSE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (BELOW STEERING COLUMN) PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV, LO RUN WIRE SEO SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC PWM SOLENOID TCC SOLENOID TOW/HAUL SWITCH TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) PCM 1 FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR THE BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

ABS FUSE ABS IND PNK WIRE BLK WIRE BLK/WHT WIRE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BRAKE FLUID LEVEL SW IN BRAKE FLUID LEVEL SWITCH (ON LEFT SIDE OF BRAKE FLUID RESERVOIR) BRAKE FUSE BRAKE IND BRAKE INPUT SERIAL DATA BRN WIRE CLUTCH START SWITCH (TOP OF CLUTCH CLUTCH ASSY) CPP SW SIG DIESEL DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) ENGINE CONTROLS SYSTEM FRONT AXLE ACT/SW INPUT VSS INPUT LEFT FRONT SENSOR (+) RIGHT FRONT SENSOR (-) FRONT AXLE ACTUATOR/ SWITCH (ON AXLE HOUSING) GAS GROUND MOTOR, SOLENOID PWR GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START IGN 1 FUSE IGNITION LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) LOGIC LT BLU WIRE LT GRN/BLK WIRE M/T ONLY NCA WIRE OF TRANSFER CASE) PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (DLC) (BELOW STEERING COLUMN) PPL/ PPL/ PPL/ PPL/ PPL/WHT WIRE RED WIRE RIGHT FRONT WHEEL SPEED SENSOR SIDE OF TRANSMISSION) STOPLAMP SWITCH (ON TOP OF BRAKE PEDAL BRACKET) TAN WIRE TRANSFER CASE SHIFT CONTROL MODULE (LEFT SIDE OF DASH, BEHIND HEADLAMP SWITCH) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEHICLE SPEED SENSOR (VSS) VEHICLE SPEED SENSOR ADAPTER VSS HIGH VSS LOW VSS OUTPUT WHT WIRE YEL WIRE YEL/BLK WIRE

1320 1339 582 PNK WIRE 15 14 35 SERIAL DATA SERIAL DATA ACCELERATOR PEDAL POSITION SENSOR (ABOVE ACCELERATOR PEDAL) APP SENS BLK WIRE BLK/WHT WIRE BRN WIRE CLUTCH PEDAL POSITION SWITCH (TOP OF CLUTCH PEDAL) CLUTCH SW INPUT CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECT FUSE ENGINE CONTROLS SYSTEM FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE NCA WIRE OFF ORG/ WIRE ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RESUME/ACCEL SENS 1 GRD APP SENS 3 SENS 1 RT APP SENS SENS 3 RT SENS 2 RT APP SENSE PPL SET/COAST STOP LPS FUSE STOPLAMP SWITCH (ON TOP OF BRAKE PEDAL BRACKET) TAN WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (NEAR FRONT OF ENGINE COMPT) THROTTLE ACTUATOR CONTROL MOTOR (NEAR FRONT OF ENGINE COMPT) THROTTLE POSITION SENSOR (NEAR FRONT OF ENGINE COMPARTMENT) UNDERHOOD JUNCTION BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEH STOP FUSE VEHICLE SPEED SENSOR (VSS) VEHICLE SPEED SENSOR ADAPTER VSS HIGH VSS LOW WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

5 VOLT REF 5.3L FLEX FUEL BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLASS 2 DATA COMPUTER DATA LINES DIESEL DIESEL GAS DK BLU WIRE DK DK DK GRN WIRE DK GRN/WHT WIRE DK PPL ENG SPEED SIG ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH (ON OIL PAN) ENGINE OIL PRESSURE SENSOR (REAR OF ENGINE) EXC LUXURY LUXURY EXCEPT 5.3L FLEX FUEL FUEL LEV SENS FUEL LEVEL SENSOR (PRIMARY) (INSIDE FUEL TANK) FUEL LEVEL SENSOR (SECONDARY) (INSIDE FUEL TANK) GAS GRN WIRE GRY WIRE I/P RELAY BLOCK INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LOW REF LOWER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY LOWER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY MIL CTRL NCA WIRE OIL LEV SW SIG OIL PRES SIG ORG/ WIRE PERSONAL- IZATION POWERTRAIN CONTROL MODULE (PCM) (GAS) (ON LEFT FRONT OF ENGINE COMPT) PPL PPL (OR PPL/WHT) WIRE PPL FUEL LEV SENS RADIO SBA SIG SELECT STARTING/CHARGING SYSTEM TAN/WHT WIRE TRIP INFO FUEL INFO VSS W/ DUAL TANK W/O DUAL TANK WAIT TO START WATER IN FUEL (WIF) SENSOR (ON FUEL FILTER ELEMENT) WHT WIRE WIF IND YEL WIRE YEL/BLK WIRE

2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE BRN/WHT WIRE COAX DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM GRY/BLK WIRE HOT AT ALL TIMES I/P RELAY BLOCK (BELOW LOWER LEFT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LF SPK OUT+ LF SPK OUT- RR AUD SIG+ RR AUD SIG- GROUND LR AUD SIG + LR AUD SIG - RF SPK OUT - RF SPK OUT + LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK RADIO ON SIG WIRE PNK WIRE PNK/BLK WIRE PPL PPL ENABLE SIG PROGRAM RADIO RADIO FUSE RADIO MUTE REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG VOICE LOW REF CELL VOICE SIG SEEK DOWN SEEK UP SERIAL DATA SOURCE DOWN SOURCE UP SPLICE PACK STEERING WHEEL AUDIO CONTROLS TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE COMMUNICATION INTERFACE MODULE VOICE VOLUME DOWN VOLUME UP VSS SIGNAL

2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE ENGINE CONTROLS SYSTEM GROUND GRY/BLK WIRE HOT AT ALL TIMES I/P RELAY BLOCK (BELOW LOWER LEFT SIDE OF DASH) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LF SPK OUT+ LF SPK OUT- RR AUD SIG+ RR AUD SIG- GROUND LR AUD SIG+ LR SPK OUT + LR SPK OUT - RF SPK OUT + RF SPK OUT - LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK RADIO ON SIG WIRE PNK WIRE PNK/BLK WIRE PPL PPL ENABLE SIG PROGRAM RADIO RADIO FUSE RADIO MUTE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG VOICE LOW REF CELL VOICE SIG RR AUD SIG+ SEEK DOWN SEEK UP SERIAL DATA SOURCE DOWN SOURCE UP SPLICE PACK STEERING WHEEL AUDIO CONTROLS TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE COMMUNICATION INTERFACE MODULE VOICE VOLUME DOWN VOLUME UP VSS SIGNAL