GMC Cab & Chassis Sierra 3500 HD (2008-2012) nca Wiring diagrams

A/T MANUAL SHIFT SWITCH AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INPUT SHAFT SPEED (ISS) AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUTOMATIC TRANSMISSION OUTPUT SHAFT SPEED (ISS) AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRUISE CONTROL SYSTEM DK BLU WIRE 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 INPUT SPEED SENSOR (ISS) SIGNAL ISS/OSS SUPPLY VOLTAGE LT BLU WIRE NCA WIRE OUTPUT SPEED SENSOR (OSS) SIGNAL PNK WIRE PPL RED WIRE REF SENSOR TAN WIRE TAN/BLK WIRE TAP TOW/ UP/ HAUL TAP SW DOWN SIG SW SIG TOW/ HAUL SWITCH 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 VOLT W/ ELECTRONIC STEERING CONTROL W/O 2 SPEED TRANSFER CASE WHT WIRE YEL WIRE

4 SPEED A/T 6 SPEED A/T ALLISON LCT 1000 4.3L 6.0L (VIN K) 4.3L, 6.0L (VIN G) A/C CMPRSR RELAY ACTIVE 2 SPEED AIR BAG IGN FUSE 40 AUTOMATIC TRANSMISSION (4 SPEED A/T) AUTOMATIC TRANSMISSION (6 SPEED A/T, 2 MODE HYBRID) AUX HVAC-IGN FUSE 48 BCK/UP LAMP PCB RELAY BLK WIRE BRN WIRE DIGITAL VIDEO DISC (DVD) CONTROL MODULE (IF EQUIPPED) DRIVE MOTOR GENERATOR POWER INVERTER MODULE (6.0L (VIN J)) ECM-IGN FUSE 56 ELECT- RONIC FROM BODY CONTROL MODULE (DIAGRAM 4 OF 7) FROM DLIS FUSE 35 (DIAGRAM 4 OF 7) HDLP LO/HID RELAY HEATED STEERING WHEEL CONTROL MODULE HEATED STEERING WHEEL CONTROL MODULE INLINE FUSE HI BEAM PCB RELAY HORN PCB RELAY HVAC-IGN FUSE 55 INFLATABLE RESTRAINT I/P MODULE ON/OFF INDICATOR (IF EQUIPPED) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL L/GATE FOG LAMP DRL PCB FRT WASH PCB RELAY RELAY RELAY PCB RELAY LEFT I/P J/B (LOWER LEFT SIDE OF DASH) MISC ING FUSE 43 MODE ACTUATOR NCA WIRE PARK LAMP RELAY PNK WIRE PNK/ WHT WIRE PNK/WHT WIRE REAR DEFOG RELAY REAR VIEW CAMERA RECIRCULATION ACTUATOR RED WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SEAT CLIMATE CONTROL MODULE SEO/ALC FUSE 54 STRTR RELAY TO FAN-1 FUSE 57 (DIAGRAM 6 OF 7) FRT WPR FUSE 36 TRAILER STOP BRAKE LAMP CONTROL SWITCH MODULE TRANS IGN 1 FUSE 19 TRANSFER CASE SHIFT CONTROL MODULE (IF EQUIPPED) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ FRONT SEAT COOLING HEATER W/O FRONT TO SEAT COOLING (DIAGRAM HEATER 6 OF 7) W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER CONTROL PCB RELAY WIPER REAR FUEL CHMSL SPEED WASH PMP PCB PCB PCB RELAY RELAY RELAY RELAY YEL WIRE

4.3L BANK 1 BANK 2 SENSOR 2 SENSOR 2 BANK 1 SENSOR 1 BANK 2 SENSOR 1 BLUNT CUT POWER TAKE OFF (PTO) PROVISION CENTRAL SEQUENTIAL FUEL INJECTION (CENTRAL SFI) COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE, W/ LUXURY EAP FUSE 38 ECM/THROT CONT FUSE 5 ELECTRONIC ADJUSTABLE PEDALS PCB RELAY ENG FUSE 4 ENGINE CONTROL MODULE (ECM) EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID VALVE EXCEPT 4.3L EXCEPT 4.3L 4.3L EXCEPT HYBRID FAN CNTRL RELAY (EXCEPT 6.0L(VIN J)) FROM AUXILIARY BATTERY RUN RELAY (DIAGRAM 1 OF 7) FROM FRT WPR FUSE 36 (DIAGRAM 5 OF 7) FUEL FUEL INJECTOR INJECTOR FUSE 52 HEATED HEATED OXYGEN OXYGEN SENSOR SENSOR HEATED OXYGEN SENSOR HYBRID W/O ENGINE CONTROL POWER TAKE OFF (PTO) CONTROLS W/ ENGINE CONTROL IGNITION COIL 3 IGNITION IGNITION COIL 1 CONTROL MODULE (ICM) IGNITION IGNITION COIL 5 COIL 7 INJ-A FUSE 24 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSOR NCA WIRE PARK ENABLE PCB RELAY PNK PNK PNK PNK PNK WIRE PNK WIRE PNK/BLK WIRE PNK/BLK) PNK (OR WIRE POWER TAKE OFF (PTO) CONTROLS POWER TAKE OFF (PTO) MODULE (IF EQUIPPED) PWR/ TRN RELAY REARVIEW CAMERA IMAGE DISPLAY MODULE RED/WHT WIRE SECURITY INDICATOR LAMP SERIAL DATA GATEWAY (SDG) MODULE (HYBRID) SNSR FUSE 18 SNSR FUSE 8 TO AUXILIARY FUSE BLOCK (DIAGRAM 7 OF 7) TO INJ-B FUSE 13 (DIAGRAM 7 OF 7) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VALVE LIFTER OIL MANIFOLD (VLOM) ASSEMBLY (5.3L, 6.0L(VIN G) VEHICLE INCLINATION SENSOR VEHICLE SHOCK SENSOR W/ AUXILIARY BATTERY W/ REAR VIEW CAMERA W/O REAR VIEW CAMERA W/O W/ REAR VIEW REAR VIEW CAMERA CAMERA YEL WIRE

A/C COMPRESSOR ACCESSORY DC POWER CONTROL MODULE ACCM FUSE 3 ACPO FUSE 1 AUTOMATIC TRANSMISSION AUXILIARY FLUID PUMP CONTROL MODULE BECM FAN FUSE 2 BECM FUSE 10 CAB HTR PUMP RELAY COOL PUMP RELAY DK BLU WIRE DRIVE MOTOR GENERATOR BATTERY CONTROL MODULE DRIVE MOTOR GENERATOR POWER INVERTER MODULE ELECTRONIC POWER STEERING MOTOR CONTROL MODULE EPS FUSE 7 FAN 1 FUSE FAN CNTRL RELAY FAN HI RELAY FAN MID 2 RELAY FAN MID FAN LO RELAY 1 RELAY FAN-2 FUSE FROM ENG FUSE 4 (DIAGRAM 6 OF 7) FROM RIGHT BATTERY (DIAGRAM 1 OF 7) FROM UNDERHOOD FUSE BLOCK (DIAGRAM 6 OF 7) FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR FUEL INJECTOR GENERATOR BATTERY VENT FAN RELAY DRIVE MOTOR GENERATOR BATTERY IGNITION COIL 2 IGNITION IGNITION IGNITION COIL 4 COIL 6 COIL 8 INJ-B FUSE 13 (EXCEPT 4.3L) MEGA FUSE NCA WIRE PIM 1 FUSE 8 PIM 2 FUSE 9 PNK WIRE PNK/WHT WIRE PPL RED WIRE RED/WHT WIRE SERIAL DATA GATEWAY (SDG) MODULE TRANS PUMP FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

1 14 11 4 6 PPL PNK ELEM CTRL SPLY VOLT ELEM CTRL ELEM CTRL SPLY VOLT WIRE 1 4 5 6 GND GND B+ B+ 2 3 5 6 PNK LOW REF LOW REF LOW REF LOW REF WIRE 4 1 3 2 TEMP SIG TEMP SIG TEMP SIG TEMP SIG BLK WIRE COMPUTER DATA LINES SYSTEM 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 2 GRY WIRE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDER FRONT OF DRIVER'S SEAT) NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PNK ELEM CTRL WIRE PNK WIRE PPL RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CUSHION, BACK HEAT 1 2 3 4 5 6 7 8 B+ GROUND BACK HEAT BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CUSHION TEMP SEAT BACK TEMP BACK HEAT 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) EXCEPT 6.6L 6.6L FUSE 37 FUSE 34 GRN WIRE GROUND DISTRIBUTION SYSTEM GRY WIRE HEATED SEAT CONTROL MODULE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW HEAT IND HIGH HEAT IND LOW HEAT IND HIGH HEAT IND LOW SPEED GMLAN LT BLU WIRE LT GRN WIRE MEDIUM HEAT IND BACK, CUSHION HEAT IND NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PNK DK PPL WIRE PNK LOW REF LOW REF LOW REF LOW REF WIRE PNK WIRE PPL RED/WHT WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

13 14 15 16 17 PPL BACK BACK IND BLK WIRE BLU WIRE BRN WIRE CUSHION, BACK CUSHION, BACK IND DK BLU WIRE DK GRN WIRE DRIVER HEATED SEAT SWITCH GRY WIRE LT BLU WIRE MID NCA WIRE PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PASSENGER HEATED SEAT SWITCH PNK LT DK WIRE PNK LT WIRE PNK WIRE PPL PPL/WHT WIRE TAN WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BRN/WHT WIRE DEFOGGER SYSTEM DK BLU/WHT WIRE DOWN DRIVER OUTSIDE REARVIEW MIRROR HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LEFT LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL/WHT WIRE PWR MIR FUSE 14 RED/WHT WIRE RIGHT TAN WIRE TAN/WHT WIRE WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ B+ LOW REF LO SPD DATA BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE PEDAL ASSEMBLY) CHIME MODULE (CENTER OF DASH, BEHIND RADIO) CONNECTOR BREAKOUT) (W/ LUXURY EDITION) DK BLU WIRE DK GRN WIRE DLIS FUSE 35 FUSE 32 DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH GASOLINE DIESEL HOT AT ALL TIMES IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER DRIVER'S SEAT) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 FUSE 43 KEY-IN IGNITION SWITCH LEFT I/P JUNCTION BLOCK (LOWER LEFT LEFT SEAT BELT SW LO SPD GMLAN SERIAL DATA LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LOW TIRE PRESSURE IND LT (W/ FRONT BENCH SEAT) LT BLU WIRE NCA WIRE OFF PARK BRAKE SWITCH (ON PARK PNK SUPPLEMENTAL RESTRAINTS SYSTEM WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL RADIO RDO FUSE 42 FUSE 39 RED/WHT WIRE RUN WIRE SEAT BRAKE BELT IND IND SERIAL DATA SIDE OF DASH) SOUND SYSTEMS TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ RADIO PROVISIONS W/O LUXURY EDITION W/O RADIO PROVISIONS WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 B+ 1 8 13 B+ LOW REF LO SPD DATA BLK WIRE BLK/WHT WIRE BLU WIRE CHIME MODULE (CENTER OF DASH, BEHIND RADIO) DK BLU WIRE DK GRN WIRE DLIS FUSE 35 FUSE 32 DRIVER INFORMATION CENTER (DIC) DISPLAY DRIVER SEAT BELT BUCKLE DRIVER SEAT BELT SWITCH GASOLINE DIESEL HOT AT ALL TIMES IGNITION SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER DRIVER'S SEAT) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 FUSE 43 KEY-IN IGNITION SWITCH LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT SEAT BELT SW LO SPD GMLAN SERIAL DATA LOGIC LOW ENGINE OIL PRESSURE IND LOW REF LOW TIRE PRESSURE IND LT BLU WIRE NCA WIRE OFF PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL RADIO RDO FUSE 42 FUSE 39 RED/WHT WIRE RUN WIRE SEAT BRAKE BELT IND IND SERIAL DATA SOUND SYSTEMS SPLICE PACK SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ RADIO PROVISIONS W/O LUXURY EDITION W/O RADIO PROVISIONS WHT WIRE