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

4.3L AUXILIARY BATTERY BANK 1 SENSOR 1 BANK 2 BANK 1 SENSOR 2 SENSOR 2 BANK 2 SENSOR 1 CENTRAL SEQUENTIAL FUEL INJECTION (CENTRAL SFI) EAP FUSE 38 ECM/THROT CONT FUSE 5 ELECTRONIC ADJUSTABLE PEDALS PCB RELAY ENG FUSE 4 EXCEPT 4.3L EXCEPT 4.3L 4.3L FAN HI RELAY FAN-1 FUSE 57 FAN LO RELAY FAN-2 FUSE 60 FROM FRT WPR FUSE 36 (DIAGRAM 5 OF 6) FAN CNTRL RELAY FUEL FUEL FUEL INJECTOR INJECTOR INJECTOR FUEL INJECTOR FUSE 52 HEATED HEATED OXYGEN OXYGEN SENSOR SENSOR HEATED OXYGEN SENSOR IGNITION COIL MODULE IGNITION IGNITION COIL/ CONTROL MODULE MODULE (ICM) IGNITION IGNITION IGNITION COIL/ COIL/ COIL/ MODULE MODULE MODULE IGNITION IGNITION IGNITION FUEL COIL/ COIL/ COIL/ INJECTOR MODULE MODULE MODULE INJ-A FUSE 24 INJ-B FUSE 13 (EXCEPT 4.3L) 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 (OR PNK/BLK) WIRE PNK WIRE PNK/BLK WIRE PNK/BLK) PNK (OR WIRE PNK/WHT WIRE POWER TAKE OFF (PTO) MODULE (IF EQUIPPED) PWR/ TRN RELAY RED/WHT WIRE SECURITY INDICATOR LAMP SNSR FUSE 18 SNSR FUSE 8 TO AUXILIARY BATTERY RUN RELAY (DIAGRAM 1 OF 6) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VALVE LIFTER OIL MANIFOLD (VLOM) ASSEMBLY (5.3L, 6.0L, 6.2L) VEHICLE INCLINATION SENSOR VEHICLE SHOCK SENSOR W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE, LUXURY YEL WIRE

2 OF 5) AIR BAG BATT FUSE 42 ALC/COMP FUSE 54 AMP FUSE 38 AUDIO AMPLIFIER (PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM) AUTOMATIC A/C AUX PWR 2 FUSE 2 AUX PWR FUSE 16 BLK WIRE BODY CONTROL MODULE (BCM) CENTER CONSOLE ACCESSORY POWER OUTLET CENTER CONSOLE COMPARTMENT ACCESSORY POWER OUTLET CENTER SEAT ACCESSORY POWER OUTLET CHIME POWER TAKE OFF MODULE (PTO) RELAY CREW CAB W/ INDIVIDUAL FRONT SEAT CREW CAB/ EXTENDED CAB W/ PERFORMANCE EXHANCED AUDIO, FRONT COMPARTMENT CONSOLE DIGITAL RADIO RECEIVER (IF EQUIPPED) ESC/ALC EXH FUSE 1 FROM HEAVY ABS-2 FUSE 8 (DIAGRAM 2 OF 5) FROM LEFT I/P J/B (DIAGRAM 2 OF 5) FROM LT DR CIRCUIT BREAKER (DIAGRAM GARAGE DOOR OPENER (GDO) HVAC CONTROL MODULE I/P 2 ACCESSORY POWER OUTLET INFO FUSE 22 LBEC 2 FUSE 67 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LGM FUSE 66 LOCK PCB UNLOCK PCB RELAY RELAY LOCK/UNLOCK PCB RELAY MANUAL A/C NCA WIRE ORG/ WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PDM FUSE 9 (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE) PERFORMANCE ENHANCED AUDIO POWER LOCKS W/O INDIVIDUAL FRONT SEAT, POWER MIRROR POWER TAKE OFF (BLUNT CUT) PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM PTO FUSE 44 RADIO RDO FUSE 39 REAR SEAT AUDIO (RSA) CONTROL (IF EQUIPPED) RED WIRE RED/ WHT WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RSE FUSE 19 STOP IS LPS FUSE 17 LT STOP TRN FUSE 6 LAMPS FUSE TO BODY CONTROL MODULE (DIAGRAM 4 OF 5) TO DLIS FUSE 32 (DIAGRAM 4 OF 5) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) VIDEO DISPLAY W/ CUSTOM FRONT COMPARTMENT FLOOR CONSOLE W/ FULL FEATURE CENTER CONSOLE W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ LUXURY W/ ONSTAR W/ REAR SEAT ENTERTAIN- MENT PACKAGE W/O LUXURY W/O LUXURY, RADIO W/O RADIO W/O W/ LUXURY LUXURY WHT RED/ WIRE WHT WIRE WINDSHIELD WASHER SOLVENT HEATER (IF EQUIPPED)

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

6 SPEED A/T ALLISON LCT 1000 A/C CMPRSR RELAY AIR BAG IGN FUSE 37 BCK/UP LAMP PCB RELAY BLK WIRE BLUNT CUT POWER TAKE-OFF (PTO) PROVISION TRAILER BRAKE CONTROL MODULE BRN WIRE CHMSL REAR COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE, W/ LUXURY CONTROL PCB RELAY AUX HVAC- IGN FUSE 45 DRL PCB RELAY EAP FUSE 35 ECM IGN FUSE 53 ELECTRONIC, ACTIVE 2 SPEED ENGINE CONTROL MODULE (ECM) FAN FUSE 68 FAN RLY RELAY FOG LAMP RELAY FROM BODY CONTROL MODULE (DIAGRAM 4 OF 5) FROM DLIS FUSE 32 (DIAGRAM 4 OF 5) FRONT DRIVE AXLE AXLE (W/ ACTIVE 2 SPEED PUSH- BUTTON CONTROL TRANSFER CASE) FRT WASH PCB RELAY FRT WPR FUSE FUSE 33 GLOW PLUG CONTROL MODULE (GPCM) HDLP LO/HID RELAY HEATED STEERING WHEEL CONTROL MODULE HEATED STEERING WHEEL CONTROL MODULE INLINE FUSE HI BEAM PCB RELAY HORN PWR/TRN PCB RELAY RELAY HVAC-IGN FUSE 52 INFLATABLE RESTRAINT I/P MODULE ON/OFF INDICATOR (IF EQUIPPED) 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) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) PNK (NOT USED) WIRE MISC IGN FUSE 40 MODE ACTUATOR NCA WIRE PARK ELECTRONIC ENABLE ADJUSTABLE PCB PEDALS RELAY PCB RELAY PNK WIRE PNK/WHT WIRE POWER TAKE OFF (PTO) MODULE (IF EQUIPPED) PRK LAMP RELAY REAR VIEW SEAT CLIMATE CAMERA CONTROL MODLE REAR WIPER FUEL WASH SPEED PCB PMP DEFOG PCB PCB RELAY RELAY RELAY RELAY RELAY REARVIEW BLUNT CUT CAMERA POWER TAKE-OFF IMAGE DISPLAY (PTO) MODULE PROVISION REARVIEW CAMERA IMAGE DISPLAY MODULE RECIRCULATION ACTUATOR RED WIRE RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SECURITY VEHICLE INDICATOR INCLINATION LAMP SENSOR SEO SEO/ALC FUSE 51 STOP LAMP SWITCH STRTR RELAY TRANS IGN 1 FUSE 13 TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY VEHICLE SHOCK SENSOR W/ SPO ALARM W/O 2 SPEED TRANSFER CASE W/O FRONT W/ FRONT SEAT COOLING SEAT COOLING HEATER HEATER W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER YEL WIRE

BLK WIRE DK BLU WIRE DK GRN WIRE DRIVER SEAT 2 CIRCUIT BREAKER DRIVER SEAT ADJUSTER MOTOR ASSEMBLY (ON DRIVER'S SEAT TRACK) DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE NCA WIRE RED/WHT WIRE RWD TAN WIRE YEL WIRE

1 4 5 6 GND GND B+ B+ 2426 2080 2482 2435 PNK LOW REF LOW REF LOW REF LOW REF WIRE 4 1 3 2 2425 2079 2436 2434 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

AUX HVAC-IGN FUSE 48 FUSE 45 BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE DIM SIG DK GRN/WHT WIRE EXCEPT 6.6L 6.6L HEATED STEERING FUSE HOLDER (ON STEERING COLUMN) HEATED STEERING WHEEL HEATED STEERING WHEEL CONTROL MODULE (IN STEERING WHEEL) HEATED STEERING WHEEL IND HEATED STEERING WHEEL SWITCH HOT W/ RUN/CRNK RELAY ENERGIZED IGN LED CNTRL SW SIG VOLT REF SNS SIG WHL CNTRL GND INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) INFLATABLE RESTRAINTS STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) LEFT STEERING WHEEL CONTROL SWITCH LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE PNK WIRE RED WIRE RED/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

BLK WIRE DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE NCA WIRE PASS SEAT 1 CIRCUIT BREAKER PASSENGER SEAT ADJUSTER MOTOR ASSEMBLY (ON PASSENGER'S SEAT TRACK) PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT FRONT VERTICAL MOTOR PASSENGER SEAT HORIZONTAL MOTOR PASSENGER SEAT REAR VERTICAL MOTOR RED/WHT WIRE RWD TAN WIRE YEL WIRE

BLK WIRE DK BLU WIRE DK GRN WIRE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PASS SEAT 1 CIRCUIT BREAKER PASSENGER SEAT ADJUSTER MOTOR ASSEMBLY (ON PASSENGER'S SEAT TRACK) PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT FRONT VERTICAL MOTOR PASSENGER SEAT HORIZONTAL MOTOR PASSENGER SEAT LUMBAR HORIZONTAL MOTOR (IN PASSENGER'S SEAT BACK) PASSENGER SEAT LUMBAR SWITCH PASSENGER SEAT LUMBAR VERTICAL MOTOR PASSENGER SEAT REAR VERTICAL MOTOR PASSENGER SEAT RECLINE MOTOR (LOWER RIGHT SIDE OF PASSENGER'S SEAT BACK) PNK WIRE RED/WHT WIRE RWD TAN WIRE WHT 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