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

13 34 12 59 58 17 27 28 8 65 25 13 5 49 44 43 LOW REF 22 21 4 58 LOW REF ECT SENS SIG 4.8L, 5.3L, 6.2L 4.3L BLK WIRE COMPUTER DATA LINES SYSTEM COOLING FAN DIODE 1 COOLING FAN DIODE 2 DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) FAN CNTRL RELAY FAN HI RELAY FAN LO RELAY FAN-1 FUSE 60 FAN-2 FUSE 62 GRY WIRE HOT AT ALL TIMES LEFT COOLING FAN (LEFT FRONT OF ENGINE COMPT) LT BLU WIRE ORG/BLK WIRE PWR/ TRN RELAY RIGHT COOLING FAN (RIGHT FRONT OF ENGINE COMPT) SENS SIG PWRTRN RLY CTRL FAN RLY CTRL FAN RLY CTRL DATA BUS (-) DATA BUS (+) TAN WIRE TAN/BLK WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) 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

1 2 3 4 5 6 SENS CTRL PTLAN + PTLAN - PTLAN + PTLAN - GROUND 12-VOLT REF LF SIG WHEEL SPD SENS GROUND 5-VOLT REF 16 17 2500 2501 COMPUTER DATA LINES SYSTEM DATA BUS + DATA BUS - 6 16 CRUISE/ETC/ TCC BRK SIG PARK BRK SW ABS INDICATOR ABS-1 FUSE 61 BLK WIRE BLK/ GRY WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE MASTER CYLINDER PISTON POSITION SENSOR (BOTTOM OF BRAKE MASTER CYLINDER) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRK APPLIED SIG SERIAL DATA COMMUNICATION GROUND IGN VOLT BRN WIRE COMPUTER DATA LINES SYSTEM DATA SERIAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM MISC IGN IGN FUSE 43 FUSE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY EXTERIOR LIGHTS SYSTEM PNK PNK PPL PNK PPL WIRE GRY BLK/ WIRE GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEAVY DUTY ABS FUSE 59 HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) HOT W/ RUN/CRNK RELAY ENERGIZED I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS SYSTEM TRACTION CONTROL SWITCH IPC FUSE LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LUXURY NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PNK AIR CONDITIONING SYSTEM WIRE PNK POWER DISTRIBUTION SYSTEM WIRE PNK WIRE POWER DISTRI- BUTION SYSTEM PPL RADIO RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SIG STEERING ANGLE SENSOR (ON STEERING COLUMN) STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CTRL SW SIG 12 13 812 7062 12-VOLT REF PPL BRAKE SW SIG VEHICLE SPD SIG WHT RED/ WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE TRIM PANEL) 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

1-2 SHIFT SOLENOID (SS) VALVE 2-3 SHIFT SOLENOID (SS) VALVE 4.3L AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 4.3L GRY WIRE HI SPD GMLAN INPUT SPEED SENSOR (ISS) INSTRUMENT PANEL CLUSTER (IPC) LO GM GMLAN LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MIL IND MIL IND. CTRL MIL SIG NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PPL PRESSURE CONTROL (PC) SOLENOID VALVE RED WIRE REPLICATED TOS SIGN TAN WIRE TAN/BLK WIRE TORQUE CONVERTER CLUTCH (TCC) PULSE WIDTH MODULATION (PWM) SOLENOID VALVE TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVE TOW/ HAUL IND TOW/ HAUL SWITCH TOW/HAUL SW SIG 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 (-)

A/T MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM FROM AUTOMATIC TRANSMISSION (DIAGRAM 1 OF 2) FTP SWITCH 1 VOLTAGE FTP SWITCH 3 VOLTAGE FTP SWITCH 4 VOLTAGE FTP SWITCH 5 VOLTAGE GMLAN GMLAN SERIAL SERIAL DATA DATA BUS - BUS + GMLAN SERIAL DATA BUS + GRN WIRE GRY WIRE ISS/OSS SUPPLY VOLTAGE NCA WIRE ORG/WHT WIRE OUTPUT SHAFT SPEED SENSOR (OSS) OUTPUT SPEED SENSOR (OSS) SIGNAL PNK WIRE PPL PPL/WHT WIRE RED WIRE TAN WIRE TAN/BLK WIRE TAP UP/ TAP DOWN SW SIG TRANSMISSION CONTROL MODULE (TCM) CONTROL SOLENOID VALVE ASSEMBLY TRANSMISSION RANGE SWITCH SIG A TRANSMISSION RANGE SWITCH SIG B TRANSMISSION RANGE SWITCH SIG C TRANSMISSION RANGE SWITCH SIG P WHT WIRE YEL WIRE

11 2 LH ST SIG RH ST SIG BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLED SEATS FUSE 24 DDM FUSE 4 DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER'S SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER'S SEAT CUSHION) DRIVER SEAT BACK VENTILATION HEATING, COOLING MODULE DRIVER SEAT CUSHION VENTILATION HEATING, COOLING MODULE GMLAN GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LOGIC LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (MSM) (UNDER FRONT OF DRIVER'S SEAT) PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PASSENGER SEAT BACK VENTILATION HEATING, COOLING MODULE PASSENGER SEAT CUSHION VENTILATION HEATING, COOLING MODULE PNK PNK PPL WIRE PNK WIRE PPL RED/WHT WIRE TAN WIRE TAN/BLK WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

4 6 BATT POS VOLT GND 6 4 GND BATT POS VOLT BACK IND BCK, CUSH BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOL IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER MEMORY/ HEATED, COOLED SEAT SWITCH DRV HEAT COOL CTRL DRV HEAT COOL SW SIG DRV HEAT HI TEMP CTRL DRV HEAT LO TEMP CTRL DRV HEAT MID TEMP CTRL DRV SEAT BACK CTRL DRV ST BCK, CSH CTRL GMLAN SERIAL DATA GROUND DISTRIBUTION SYSTEM GRY WIRE HI IND HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LO IND LOW REFERENCE LT BLU WIRE LT GRN/BLK WIRE MEMORY SW DIM CTRL MID IND ORG/ WIRE PAS HEAT COOL CTRL PAS HEAT COOL SW SIG PAS HEAT HI TEMP CTRL PAS HEAT LO TEMP CTRL PAS HEAT MID TEMP CTRL PAS SEAT BACK CTRL PAS ST BCK, CSH CTRL PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER MEMORY/ HEATED, COOLED SEAT SWITCH PDM FUSE 9 PNK LOW REFERENCE WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL DRV SEAT BACK CTRL PPL PAS HEAT BACK CTRL RED WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SEAT BACK) SEAT COOL SEAT HEAT TAN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE