Chevrolet Cab & Chassis Silverado 3500 HD (2008-2011) 6 speed a/t Wiring diagrams

4 SPEED A/T W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL 6 SPEED A/T AUTOMATIC TRANSMISSION MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION SHIFT LEVER BODY CONTROL MODULE (BCM) BRN WIRE DLIS FUSE 35 DRIVER WINDOW SWITCH FROM LBEC 2 FUSE 72 (DIAGRAM 3 OF 7) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) IGN IGNITION SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL KEY-IN IGNITION SWITCH LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH NCA WIRE OFF ORG/ WIRE PASSENGER WINDOW RIGHT STEERING SWITCH WHEEL CONTROL SWITCH PNK WIRE PNK/BLK WIRE POWER SUPPLY RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN WIRE SUNROOF CONTROL MODULE (IF EQUIPPED) THEFT DETERRENT MODULE (TDM) TO RUN/CRNK RELAY (DIAGRAM 5 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 5 OF 7) TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VOLT IGN W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/O ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/O W/ ACCESSORY ACCESSORY STEERING STEERING WHEEL WHEEL CONTROL CONTROL WHT RED/ WIRE WHT WIRE YEL WIRE

6 SPEED A/T 6.0L (VIN K) AUTOMATIC A/C AUXILIARY BATTERY AUXILIARY BATTERY RELAY (IF EQUIPPED) (REAR OF ENGINE COMPT) BLK WIRE BODY BUILDER EMERGENCY LAMP BODY INSTRUMENT CONTROL PANEL MODULE CLUSTER (BCM) (IPC) DK GRN WIRE EMERGENCY VEHICLE WIRING (BLUNT CUT) ENGINE TRANSMISSION CONTROL CONTROL MODULE MODULE (ECM) (TCM) EVAPORATIVE EMISSION (EVAP) CANISTER VENT SOLENOID VALVE FROM LEFT I/P J/B (DIAGRAM 4 OF 6) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 6 OF 6) FUSE FUSE FUSE FUSE HOLDER (RIGHT SIDE FUSIBLE LINK 1 (14 GA- FUSIBLE LINK 2 (14 GA- FUSIBLE LINK 3 GENERATOR HDLP WASH FUSE 22 HVAC CONTROL MODULE (ON RIGHT FRONT CORNER OF HVAC MODULE) HVAC LTR BATT FUSE 53 FUSE 39 I/P 1 ACCESSORY POWER OUTLET DATA LINK CONNECTOR (DLC) MANUAL A/C IPC FUSE 46 ITBC FUSE 6 TREC FUSE 67 FUSE 37 LEFT BATTERY LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MEGA FUSE (RIGHT REAR OF ENGINE COMPT) MEGA MEGA FUSE FUSE MEGA OF FIREWALL) FUSE MOBILE RADIO FUSE BLOCK FUSE (BEHIND RIGHT SIDE OF DASH) MODULE NCA WIRE ORG/ WIRE POWER SUPPLY POWER SUPPLY, AUXILIARY BATTERY RED WIRE RED/BLK WIRE RED/WHT WIRE RELAY RELAY A RELAY B RIGHT BATTERY RIGHT I/P J/B (IN RIGHT END OF DASH) RUN WIRE STARTER STUD 2 FUSE 63 TCM-BATT ECM- FUSE 14 BATT FUSE 12 TO ROOF BEACON SWITCH (DIAGRAM 2 OF 6) TO STUD 1 FUSE 68 (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 6) TRAILER BRAKE (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ AUXILIARY BATTERY W/ EMERGENCY VEHICLE ROOF LAMP RELAY W/ WRECKER EMERGENCY LAMP PROVISIONS W/ WRECKER RELAY (4.3L) (TOP LEFT REAR OF ENGINE) WHT WIRE WRECKER RELAY WSW/HTR FUSE 66 YEL WIRE

4.3L 6 SPEED A/T AUTOMATIC TRANSMISSION MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION SHIFT LEVER BODY CONTROL MODULE (BCM) BRN WIRE DK BLU WIRE DLIS FUSE 35 EXCEPT 4.3L FROM LBEC 1 FUSE 64 (DIAGRAM 3 OF 6) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 6) IGN IGN VOLT IGNITION SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH NCA WIRE OFF ORG/ WIRE PASSENGER WINDOW RIGHT STEERING SWITCH WHEEL CONTROL SWITCH PNK WIRE PNK/BLK WIRE POWER SUPPLY RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN WIRE SUNROOF DRIVER CONTROL WINDOW MODULE SWITCH (IF EQUIPPED) THEFT DETERRENT MODULE (TDM) TO RUN/CRNK RELAY (DIAGRAM 5 OF 6) TO UNDERHOOD FUSE BLOCK (DIAGRAM 5 OF 6) TRANSFER CASE SHIFT CONTROL MODULE TRANSFER CASE SHIFT CONTROL SWITCH TRANSMISSION ENGINE CONTROL CONTROL MODULE MODULE (TCM) (ECM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ 10 SERIES W/ 4 SPEED, ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/ 6-SPEED W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/0 10 SERIES, W/O ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/O W/ ACCESSORY ACCESSORY STEERING STEERING WHEEL WHEEL CONTROL CONTROL WHT WIRE YEL WIRE

4 SPEED A/T W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL 6 SPEED A/T BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE DLIS FUSE 35 DRIVER WINDOW SWITCH END OF DASH) FROM LBEC 2 FUSE 64 (DIAGRAM 3 OF 7) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) IGN IGNITION SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL KEY-IN IGNITION SWITCH LEFT I/P J/B (LOWER LEFT SIDE OF DASH) NCA WIRE OFF ORG/ WIRE PASSENGER WINDOW SWITCH PNK WIRE PNK/BLK WIRE POWER SUPPLY RED/WHT WIRE RIGHT I/P J/B (IN RIGHT RIGHT I/P J/B (IN RIGHT END OF DASH) RIGHT STEERING LEFT STEERING WHEEL CONTROL WHEEL CONTROL SWITCH SWITCH RUN WIRE SUNROOF CONTROL MODULE (IF EQUIPPED) THEFT DETERRENT MODULE (TDM) TO RUN/CRNK RELAY (DIAGRAM 5 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 5 OF 7) TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VOLT IGN W/ 10 SERIES W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/ ACTIVE 2 SPEED PUSH BUTTON CONTROL TRANSFER CASE W/ ELECTRONIC 2 SPEED TRANSFER CASE W/O ACCESSORY STEERING WHEEL CONTROL W/O ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL WHT WIRE YEL WIRE

2 SPEED MANUAL SHIFT CONTROL TRANSFER CASE 4.3L 6 SPEED A/T A/C CMPRSR RELAY AUTOMATIC TRANSMISSION AUX HVAC-IGN FUSE 48 BCK/UP LAMP PCB RELAY BLK WIRE BRN WIRE DRL PCB RELAY ECM-IGN FUSE 56 ELECTRONIC ENGINE CONTROL MODULE (ECM) FOG LAMP RELAY FROM BODY CONTROL MODULE (DIAGRAM 4 OF 6) FROM DLIS FUSE 35 (DIAGRAM 4 OF 6) FRONT DRIVE AXLE ACTUATOR FRT WASH PCB RELAY FUEL SYSTEM CONTROL MODULE (FSCM) HDLP LO/HID RELAY HEATED STEERING FUSE HI BEAM PCB RELAY HORN PCB RELAY HVAC-IGN FUSE 55 INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL L/GATE PCB RELAY LEFT AIR TEMPERATURE ACTUATOR (AUTOMATIC A/C) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) (NOT USED) MISC ING FUSE 43 MODE ACTUATOR NCA WIRE PARK LAMP RELAY PNK PNK WIRE PNK WIRE POWER TAKE OFF (IF EQUIPPED) (BLUNT CUT) REAR DEFOG RELAY RECIRCULATION ACTUATOR RED WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SECONDARY FUEL PUMP RELAY (6.0L (VIN K) W/O AUXILIARY FUEL TANK) SEO/ALC AIR BAG FUSE 54 IGN FUSE 40 STOP TRAILER LAMP BRAKE SWITCH CONTROL MODULE (IF EQUIPPED) STRTR RELAY TO FAN 1 FUSE 57 (DIAGRAM WIPER CONTROL 6 OF 6) PCB RELAY FRT WPR FUSE 36 TRANS IGN 1 FUSE 19 TRANSMISSION CONTROL MODULE (TCM) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ AUTO W/O 4.3L, 5.3L (VIN O), 6.0L (VIN K), 5.3L (VIN 3) W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER REAR FUEL CHMSL SPEED WASH PMP PCB PCB PCB RELAY RELAY RELAY RELAY YEL WIRE

4 SPEED A/T W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL 6 SPEED A/T AUTOMATIC TRANSMISSION MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION SHIFT LEVER BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE DLIS FUSE 32 DRIVER PASSENGER WINDOW WINDOW SWITCH SWITCH FROM LBEC 2 FUSE 67 (DIAGRAM 3 OF 5) FROM MOBILE RADIO FUSE BLOCK (DIAGRAM 1 OF 5) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 5) IGN IGNITION SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL KEY-IN IGNITION SWITCH LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH NCA WIRE OFF ORG/ WIRE PNK WIRE PNK/BLK WIRE POWER SUPPLY REAR SLIDING WINDOW SWITCH (IF EQUIPPED) RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RIGHT STEERING WHEEL CONTROL SWITCH RUN WIRE SUNROOF CONTROL MODULE (IF EQUIPPED) THEFT DETERRENT MODULE (TDM) TO RUN/CRNK RELAY (DIAGRAM 5 OF 5) TO UNDERHOOD FUSE BLOCK (DIAGRAM 5 OF 5) TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VOLT W/ 10 SERIES W/ ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/ ACTIVE 2 SPEED PUSH BUTTON CONTROL TRANSFER CASE W/ ELECTRONIC 2 SPEED TRANSFER CASE W/O ACCESSORY STEERING WHEEL, AUTOMATIC ELECTRONIC CRUISE CONTROL W/O W/ ACCESSORY ACCESSORY STEERING STEERING WHEEL WHEEL CONTROL CONTROL WHT WIRE YEL WIRE

19 6 ACCESSORY WAKEUP SERIAL DATA 2 3 LOW SER DATA HI SER DATA 4.3L 5 4 12 13 HI SPD GMLAN (+) HI SPD GMLAN (-) HI SPD GMLAN (-) HI SPD GMLAN (+) 6 SPEED A/T 6.0L (VIN K) W/O TRAILER BRAKE 6.6L EXCEPT 4.3L, 6.6L 8 19 HIGH SPEED GMLAN SERIAL DATA BUS (+) SER DATA COMM ENABLE ACCESSORY WAKEUP SERIAL DATA AUTOMATIC TRANSMISSION BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) CAN DATA BUS HIGH CAN DATA BUS LOW COMM ENABLE COMM ENABLE SERIAL DATA DATA LINK RESISTOR (IN CHASSIS HARNESS, ON LEFT REAR CHASSIS CROSS MEMBER) DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) ELECTRONIC COMPASS MODULE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.6L 6.6L EXCEPT GAS 4.3L, 6.0L (VIN K) FUEL PUMP/ TRAILER BRAKE CONTROL MODULE (REAR FRAME, NEAR SPARE TIRE MOUNT) GLOW PLUG CONTROL MODULE (GPCM) (6.6L) (TOP LEFT REAR OF ENGINE) HI SPD GMLAN HI SPD GMLAN SERIAL DATA HIGH SPEED GMLAN SERIAL DATA BUS + LEFT I/P BLOCK JUNCTION (LOWER LEFT SIDE OF DASH) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LINEAR INTERCONNECT NETWORK BUS LT BLU WIRE LT GRN/BLK WIRE NETWORK BUS SERIAL DATA SERIAL DATA COMM ENABLE TAN TAN/BLK WIRE TAN WIRE TAN/BLK TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TERMINATOR TRANSMISSION CONTROL MODULE VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) W/ 10 SERIES W/ HYDRAULIC BRAKES W/ ONSTAR W/ PTO W/ TRAILER BRAKE W/ TWO SPEED TRANSFER CASE W/O 10 SERIES W/O INTEGRATED TRAILER BRAKE CONTROL W/O ONSTAR W/O PTO W/O TRAILER BRAKE W/O TWO SPEED TRANSFER CASE YEL WIRE YEL/BLK WIRE

4.3L 6 SPEED A/T ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION AUXILIARY FLUID PUMP CONTROL MODULE BARE BARE BARE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY CONTROL MODULE (BCM) DIESEL ENGINE CONTROL MODULE ENGINE CONTROL MODULE (ECM) ENGINE COOLANT LEVEL SWITCH EXCEPT 4.3L 4.3L EXCEPT DIESEL EXCEPT HYBRID EXHAUST GAS RECIRCULATION (EGR) VALVE SHIELD FAN HIGH RELAY RIGHT ENGINE COOLING FAN RESISTOR FROM FROM FROM RIGHT FROM BATTERY (DIAGRAM (DIAGRAM 1 OF 6) 1 OF 6) FRONT DOME/ READING LAMPS FUEL PRESSURE REGULATOR 1 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 1 SHIELD FUSE FUSE GLOW PLUG CONTROL MODULE (GPCM) GLOW PLUG FUEL FILTER CONTROL PRESSURE MODULE SWITCH (GPCM) GRY WIRE HYBRID PROPULSION IGNITION CONTROL MODULE (ICM) INTAKE AIR VALVE SHIELD EXHAUST GAS RECIRCULATION COOLER BYPASS SOLENOID VALVE MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSORS MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NCA WIRE PARK/ NEUTRAL POSITION SWITCH RELAY RIGHT ENGINE COOLING FAN ROOF ROOF BEACON BEACON RELAY SWITCH SHIELD BARE BARE SPEED A/T TRANSMISSION CONTROL MODULE (TCM) W/ HYBRID PROPULSION W/ ROOF MOUNTED LAMP W/ WRECKER EMERGENCY LAMP, BODY BUILDER EMERGENCY LAMP, ROOF MOUNTED LAMP WATER IN-FUEL SENSOR WHT WIRE

28 27 39 2500 2501 1786 GMLAN HI-SPD (+) GMLAN HI-SPD (-) IMS GROUND 28 27 43 29 GMLAN HI-SPD (+) GMLAN HI-SPD (-) 28 27 43 44 GMLAN HI-SPD (+) GMLAN HI-SPD (-) 4.3L 6 SPEED A/T 6.0L (VIN G) 6.0L (VIN J) HYBRID 66 46 2500 2501 GMLAN HI-SPD (+) GMLAN HI-SPD (-) 8 9 GMLAN HI-SPD (+) GMLAN HI-SPD (-) AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) P/N SWITCH AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL SOLENOID BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRK SW SIG COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 4.3L EXCEPT 6.0L (VIN G) GROUND GRY WIRE HOT AT ALL TIMES LT BLU/WHT WIRE MISC IGN FUSE 43 (EXCEPT 6.6L) FUSE 40 (6.6L) ORG/BLK WIRE P/N SIGNAL P/N SWITCH PARK/NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PNK PNK PNK PNK WIRE PNK PNK PNK POWER DISTRIBUTION SYSTEM WIRE PNK WIRE RUN/CRANK RELAY RUN/CRANK RELAY CTRL SHIFT LOCK SOL SUPPLY VOLT STOP LAMP SWITCH TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSION CONTROL MODULE TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) TRANSMISSION CONTROL SOLENOID VALVE ASSEMBLY CONTROL MODULE(TCM) TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

4.3L EXCEPT 4.3L 6.6L 6 SPEED A/T ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BATTERY BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - ENGINE CONTROL MODULE (ECM) (EXCEPT HYBRID: LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) (HYBRID: LEFT FRONT OF ENGINE COMPT) HEAD IGN IGNITION SWITCH LOCK MEGA FUSE ORG/ WIRE ORG/BLK WIRE PARK/ NEUTRAL POSITION (PNP) SWITCH (ON LEFT REAR SIDE OF TRANSMISSION) PARK/NEUTRAL SIGNAL PNK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY PPL RED WIRE RUN WIRE STARTER MOTOR STRT RLY CTRL STRTR FUSE 62 (EXCEPT 6.6L) FUSE 57 (6.6L) TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) STRTR RELAY WHT WIRE YEL WIRE YEL/BLK WIRE