GMC Sierra III (2013-2015) computer data lines system Wiring diagrams

13 14 15 STOP LAMP SW SIG SENSOR LOW REF VOLT REFERENCE 6.0L (VIN G) AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR SIGNAL AUX HVAC- IGN FUSE 45 BATT GND BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DASH) DK BLU WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY INSTRUMENT CLUSTER PANEL (IPC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.0L (VIN G) FUSE 19 GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED IGN LOGIC LOW REFERENCE LT GRN WIRE LT GRN/BLK WIRE ORG/BLK WIRE PC SOLENOID 1 CONTROL PC SOLENOID 2 CONTROL PC SOLENOID 3 CONTROL PC SOLENOID 4 CONTROL PC SOLENOID 5 CONTROL PNK IGN WIRE PNK WIRE 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 RED/WHT WIRE REPLICATED TOS SIGNAL SHIFT SOLENOID (SS) 1 CONTROL SHIFT SOLENOID (SS) 2 CONTROL SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 TAN WIRE TAN/BLK WIRE TCM- BATT FUSE 14 TO AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) (DIAGRAM 2 OF 2) TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL (PC) SOLENOID VALVE TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL TOS SIG TOW/ HAUL IND TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON TRANSFER CASE TAILSHAFT HOUSING) VSS HIGH SIG VSS LOW SIG

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 PNK WIRE 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 GMLAN SERIAL SERIAL GMLAN SERIAL SERIAL DATA DATA DATA DATA BUS - BUS + BUS + 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 1 2 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

10 11 12 13 14 15 16 ACCY WAKEUP SRL DATA 1553 1552 1342 550 MTR CTRL B MTR CTRL A BATT + GND 1560 1563 NEUTRAL IND CTRL 2 HI IND CTRL 1695 2501 2500 239 AXLE SW SIG GMLAN BUS - GMLAN BUS + IGN 1 VOLT 2-HI IND 2501 2500 7474 GMLAN BUS - GMLAN BUS + INCRMT ENCODER SIG 4-HI IND 4-LO IND ACCY WAKEUP SRL DATA ASSEMBLY AUX HVAC-IGN FUSE 48 FUSE 45 AXLE ACTR CTRL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE COMPUTER DATA LINES SYSTEM DIRTN SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EXCEPT 6.0L FRONT AXLE ACTUATOR FUSE 19 FUSE 13 GAS GAS DIESEL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED HOT W/ RUN/CRNK RELAY ENERGIZED UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IGN INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LOW REF LT BLU WIRE LT GRN/BLK WIRE LT GRN/DK BLU WIRE MISC IGN FUSE 43 FUSE 40 NEUTRAL IND ORG/ WIRE PNK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PULSE SIG RED/BLK WIRE RIGHT I/P JUNCTION BLOCK SER DATA SHIFT MOTOR TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSFER CASE ENCODER MOTOR (ON TRANSFER CASE) TRANSFER CASE SHIFT CONTROL MODULE (LOWER LEFT SIDE OF DASH) TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) TREC FUSE 67 FUSE 62 WHT WIRE WHT/GRN WIRE WIPER/WASHER SYSTEM YEL WIRE

6.0L 6.0L VIN G 6.6L 6.0L VIN B AUX HVAC-IGN FUSE 48 FUSE 45 AXLE SW SIG BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.0L FRONT DRIVE AXLE ACTUATOR (ON FRONT AXLE ASSEMBLY) GAS DIESEL GMLAN BUS- GROUND DISTRIBUTION SYSTEM GRY/BLK WIRE HOT W/ RUN/CRNK RELAY ENERGIZED IGN GND INSTRUMENT PANEL CLUSTER (IPC) LOGIC PNK WIRE SER DATA TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS IGN 1 FUSE 19 FUSE 13 TRANSFER CASE SHIFT CONTROL SWITCH (ON TOP LEFT OF TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

13 14 15 STOP LAMP SW SIG SENSOR LOW REF VOLT REFERENCE 6.0L (VIN G) AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR AUTOMATIC TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR SIGNAL AUX HVAC- IGN FUSE 45 BATT GND BLK/WHT WIRE BRAKE PEDAL POSITION (BPP) SENSOR COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DASH) DK BLU WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY INSTRUMENT CLUSTER PANEL (IPC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EXCEPT 6.0L (VIN G) FUSE 19 GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED IGN LOGIC LOW REFERENCE LT GRN WIRE LT GRN/BLK WIRE ORG/BLK WIRE PC SOLENOID 1 CONTROL PC SOLENOID 2 CONTROL PC SOLENOID 3 CONTROL PC SOLENOID 4 CONTROL PC SOLENOID 5 CONTROL PNK IGN WIRE PNK WIRE 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 RED/WHT WIRE REPLICATED TOS SIGNAL SHIFT SOLENOID (SS) 1 CONTROL SHIFT SOLENOID (SS) 2 CONTROL SHIFT SOLENOID (SS) VALVE 1 SHIFT SOLENOID (SS) VALVE 2 TAN WIRE TAN/BLK WIRE TCM- BATT FUSE 14 TO AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) (DIAGRAM 2 OF 2) TORQUE CONVERTER CLUTCH (TCC) PRESSURE CONTROL (PC) SOLENOID VALVE TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL TOS SIG TOW/ HAUL IND TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) (ON TRANSFER CASE TAILSHAFT HOUSING) VSS HIGH SIG VSS LOW SIG

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 PNK WIRE 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 GMLAN SERIAL SERIAL GMLAN SERIAL SERIAL DATA DATA DATA DATA BUS - BUS + BUS + 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 1 2 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

AUXILIARY GENERATOR (W/ DUAL GENERATOR, AMBULANCE UPFITTER) BATTERY CURRENT SENSOR BLK WIRE BRN WIRE CHARGE IND SIG CHARGE INDICATOR COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE COMPT NEAR FAN SHROUD) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF GENERATOR B+ GENERATOR SIG GM LAN SERIAL DATA GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 LOGIC LOW SPEED MEGA FUSE POWER DISTRIBUTION SYSTEM RED WIRE RED/WHT WIRE RIGHT BATTERY SERIAL DATA (-) (1) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (RIGHT SIDE OF FIREWALL) VOLT W/ DUAL GENERATOR, AMBULANCE UPFITTER WHT WIRE

6.0L AUTOMATIC TRANSMISSION (6 SPEED A/T) AUTOMATIC TRANSMISSION FLUID PRESSURE (TFP) MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) BATTERY CURRENT SENSOR BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GRY WIRE IGN 3 VOLT IGNITION SWITCH LOCK LOW REF MEGA FUSE ORG/ WIRE ORG/BLK WIRE PARK/NEUTRAL SIGNAL PNK/BLK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY, AUXILIARY BATTERY PPL RED WIRE RED/BLK WIRE RIGHT BATTERY RUN WIRE SERIAL DATA 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) TRANSMISSION PARK/NEUTRAL UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) STRTR RELAY WHT WIRE YEL WIRE YEL/BLK WIRE

6.0L (VIN J) PNK PPL/ WIRE 7-8, 13-14) AIR BAG IGN FUSE 40 FUSE 37 BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CREW CAB DISABLE SWITCH DISABLE SW RTN GMLAN SERIAL DATA PNK WIRE DK GRN WIRE EXCEPT 6.0L (VIN J) GRY WIRE HOT W/ RUN/CRNK RELAY ENERGIZED INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (W/ MANUAL SUPPRESSION SWITCH) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER DRIVER'S SEAT) INFLATABLE RESTRAINT STEERING WHEEL MODULE (IN STEERING WHEEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL (BEHIND STEERING WHEEL) LEFT FRONT INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN DRIVER'S DOOR) LEFT I/P JUNCTION BLOCK LT BLU WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PNK 1 2 WIRE PNK IGN 1 VOLTAGE WIRE PNK PNK WIRE PNK WIRE PPL PPL PNK WIRE PPL SHORTING BAR W/ 10 SERIES PPL/WHT WIRE RED WIRE RED/WHT WIRE RIGHT FRONT INFLATABLE RESTRAINT SIDE IMPACT SENSOR SHORTING BAR SHORTING SHORTING BAR BAR STAGE 1 STAGE 2 TAN WIRE TAN/BLK WIRE TAN/ORG WIRE W/ 10 SERIES W/ 10 SERIES W/O 10 SERIES 1 1 W/ CHILD PRESENCE DETECTOR W/O 10 SHORTING SERIES BAR W/O CHILD PRESENCE DETECTOR WHT WIRE WHT/BLK WIRE YEL WIRE

"B" PILLAR) 1 2 3 4 5 6 VOLTAGE DATA 6 6 RT HIGH CTRL RT LOW CTRL AIR BAG IND BACK LIGHT IND BAR SHORTING BELT IND BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM CREW CAB CREW CAB W/ CHILD PRESENCE DETECTOR CTRL CTRL ON IND DATA SERIAL DETECTOR) (UNDER FRONT PASSENGER SEAT) DK BLU WIRE DK GRN WIRE DK GRN/BLK WIRE DK GRN/WHT WIRE DRIVER SEAT BELT PRETENSIONER (ON LEFT EXCEPT 6.0L (VIN J) EXCEPT CREW CAB GRN WIRE IGN INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE (W/ CHILD PRESENCE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION PNK BLOCK (LOWER LEFT SIDE OF DASH) WIRE LEFT REAR INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN LEFT REAR DOOR) LOGIC LOW REF SEAT BELT SENS SIG LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MODULE (SDM) (UNDER DRIVER'S SEAT) NCA WIRE OFF IND ORG/ WIRE PASS SEAT PASSENGER AIR BAG OFF PASSENGER AIR BAG ON PASSENGER SEAT BELT IND PASSENGER SEAT BELT SWITCH (W/ 10 SERIES) PNK 1 2 WIRE PNK WIRE PNK/BLK WIRE PPL RED WIRE RED/WHT WIRE RIGHT REAR INFLATABLE RESTRAINT SIDE IMPACT SENSOR (SIS) (IN RIGHT REAR DOOR) SEAT BELT IND SERIAL DATA SHORTING BAR TAN WIRE TAN/WHT WIRE W/ MULTI- DIRECTIONAL PASSENGER POWER SEAT ADJUSTER W/ NON BUCKET FRONT INDIVIDUAL SEAT W/ NON- PNK BUCKET FRONT INDIVIDUAL SEAT WIRE W/O NON BUCKET FRONT INDIVIDUAL SEAT WHT WIRE WHT/BLK WIRE YEL/BLK WIRE