GMC Sierra 2500 HD (2002-2012) blk Wiring diagrams

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 41 46 54 57 58 59 63 72 74 75 LO REF A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (UNDER LEFT END OF DASH) BRAKE FUSE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE EXCEPT LIGHT DUTY FLUID TEMP SENSOR FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, BULB TEST, START HOT IN RUN, START INSTRUMENT CLUSTER INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LIGHT DUTY LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL ABS SYSTEM PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PPL PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV, LO RUN WIRE SENS GND B+ CLS 2 DATA CLS 2 DATA SENS GND PRND B ECT SIG IGN SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TCC PWM SOLENOID TRANSFER CASE) (ON TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VSS ADAPTER W/ TRACTION ASSIST W/O TRACTION ASSIST WHT WIRE YEL WIRE YEL/BLK WIRE

80 51 45 28 14 68 43 34 58 58 (GASOLINE) (DIESEL) A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN A/C MUFFLER HOSE ASSEMBLY) AMBIENT AIR TEMPERATURE SENSOR (IN RIGHT FRONT BUMPER FILLER ASSEMBLY AUTO BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR BLOWER MOTOR CONTROL PROCESSOR (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FAN DN FAN UP FRT DEF GROUND TEMP SEN ASS CTRL BLOWER SPEED CTRL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P RELAY BLOCK (LEFT SIDE OF DASH) INSIDE AIR TEMPERATURE SENSOR ASSEMBLY (IN HEADLINER ABOVE DRIVER) INST LAMP DIM CTRL GROUND LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TEMP CONTROL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL LOGIC LOW REF LOWER LEFT AIR TEMPERATURE SENSOR (IN LOWER LEFT FLOOR DUCT ASSEMBLY) LOWER RIGHT AIR TEMPERATURE SENSOR (BOTTOM CENTER OF HVAC BOX, IN FLOOR DUCT) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RECIR RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UPPER LEFT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL, IN UPPER DUCT) UPPER RIGHT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL, IN UPPER DUCT) WHT WIRE WHT/BLK WIRE YEL WIRE

11 12 PPL AMBIENT LIGHT SENS LO REF AMBIENT LIGHT SENS SIG RIGHT SUNLOAD SENSOR SIG LEFFT SUNLOAD SENSOR SIG AMBIENT LIGHT SENSOR BLK WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRN WIRE CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE GRY WIRE LEFT AIR TEMPERATURE ACTUATOR (TOP CENTER OF HVAC CONTROL ASSEMBLY) LEFT SOLAR SENSOR LOGIC LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE MODE ACTUATOR (LEFT SIDE OF HVAC MODULE) PPL RECIRCULATION ACTUATOR (TOP CENTER OF HVAC MODULE) RIGHT AIR TEMPERATURE ACTUATOR (TOP CENTER OF HVAC CONTROL ASSEMBLY) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT SOLAR SENSOR SUNLOAD SENSOR (TOP CENTER OF DASH) TAN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

5.3L W/DUAL BATTERIES AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL COMPUTER DATA LINES DK BLU WIRE DK GRN WIRE FUSIBLE LINK FUSIBLE LINK (8.1L ONLY) GENERATOR B+ GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA LEFT BATTERY LOGIG PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 SPLICE PACK STARTER SOLENOID SUPPLEMENTAL BRAKE ASSIST (SBA) PUMP MOTOR (MOUNTED TO POWER BRAKE BOOSTER) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) W/ SEO W/AUX BATTERY W/O SEO

A/T SHIFT LOCK CONTROL SOLENOID (ON STEERING COLUMN) BLK WIRE BTSI FUSE DK GRN/WHT WIRE HOT IN RUN OR START B/U LPS FUSE LT GRN WIRE LT GRN/BLK WIRE MEMORY SYSTEMS NCA WIRE PARK/ NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK WIRE SPLICE PACK 203 STOPLAMP SWITCH UNDERHOOD FUSE BLOCK

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

AIR BAG FUSE AIR BAG INDICATOR BLK WIRE BLK/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) GROUND GRY WIRE HIGH CONTROL CLASS 2 SERIAL DATA HOT IN RUN, START IGN 1 FUSE IGNITION INFLATABLE RESTRAINT I/P MODULE INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (UNDER DRIVER'S SEAT) INFLATABLE RESTRAINT STEERING WHEEL MODULE INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT PANEL CLUSTER (IPC) JUNCTION BLOCK-BODY (UNDER LEFT SIDE OF DASH, NEAR LEFT KICK PANEL) NCA WIRE OFF OFF ON PNK WIRE PPL 1132 PPL/WHT WIRE SHORTING BAR SOLID STATE SPLICE PACK 205 TAN/BLK WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

2-HI IND 4-HI IND 4-LO IND ATC FUSE AUTO AUXILIARY BATTERY RELAY B+ MOTOR (CCW) MOTOR (CW) GND BLK WIRE BLK/WHT WIRE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRAKE CONTROL BRN WIRE BRN/WHT WIRE CONTROL MODULE CTRL DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENCODER LOGIC ENCODER MOTOR ENCODER RTN FRONT AXLE ACTUATOR FRONT PROP- SHAFT SPEED SENSOR FT SHAFT SIG FT SHAFT RTN FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, START ILLUMINATION LAMP (2) INSTRUMENT PANEL CLUSTER LAMP LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOCK SOL OUT LOGIC LT BLU WIRE LT GRN/BLK WIRE MODULE GND 4-LO IND 4-HI IND NEUTRAL IND FT AXLE CTRL RR SHAFT SIG RR SHAFT RTN NCA WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE REAR PROP- SHAFT SPEED SENSOR RED WIRE RED/WHT WIRE REF RUN WIRE SHIFT MOTOR SOLID STATE SPLICE PACK TAN WIRE TAN/BLK WIRE TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLAMP SWITCH) TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) YEL WIRE YEL/BLK WIRE

BASE BATTERY SERIAL DATA GROUND BLK WIRE BLK/WHT WIRE BLU WIRE BODY RELAY BLOCK BODY RELAY BLOCK (LEFT SIDE OF DASH, NEAR KICK PANEL) BRN WIRE CRUISE FUSE DK BLU WIRE DK GRN WIRE DOOR JAMB SW IN DRIVER MINI WEDGE SWITCH DRIVER POWER WINDOW/ DOOR LOCK SWITCH EXTERIOR LIGHTS FUSE BLOCK GRY WIRE HDLMP RLY CNTRL PARK LIGHTS IN KEY IN IGN HEADLAMP SWITCH HOT AT ALL TIMES UNDERHOOD FUSE BLOCK TBC FUSE HOT IN RUN HOT IN RUN OR START HOT WITH PARK LIGHTS ON IGN 1 FUSE IGNITION KEY ALARM SWITCH INSTRUMENT CLUSTER INSTRUMENT PANEL CLUSTER (IPC) INT PRK FUSE LEFT I/P FUSE BLOCK LOGIC LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PARK BRAKE SWITCH PNK IGNITION 1 IGNITION 3 SEAT BELT INPUT PARK BRAKE SW WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (LEFT FRONT OF ENGINE COMPARTMENT) RIGHT TURN INPUT LEFT TURN INPUT GROUND SEAT BELT IND SEAT BELT SWITCH (ON DRIVER'S SEAT BELT BUCKLE) TAN WIRE TURN SIGNAL/ MULITFUNCTION SWITCH UNDERHOOD FUSE BLOCK WHT WIRE

15 7 WASHER RLY CTRL MTR PARK SW SIG 24 9 8 5 PNK WASHER SW SIG WIPER SW LO SIG LOW REF WIPER SW HI SIG WIRE BAT POS VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) FRONT WASHER DIODE FRT WASH FUSE 7 (EXCEPT 6.6L) FRT WASH PCB RELAY FRT WPR FUSE 36 (EXCEPT 6.6L) WPR FUSE 33 (6.6L) FUSE 5 (6.6L) GROUND DISTRIBUTION SYSTEM GRY WIRE HI LO HI LO OFF INT HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW WASHER FLUID IND SERIAL CTRL DATA LOGIC LT BLU WIRE LT GRN WIRE MIST MIST OFF INT WIPER SWITCH ORG/ WIRE PNK WIRE PPL RED/WHT WIRE RT STOP TRN FUSE 8 SERIAL DATA TAN WIRE TAN/BLK WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WASHER SWITCH WINDSHIELD WASHER FLUID LEVEL SWITCH (BOTTOM OF WASHER FLUID RESERVOIR) WINDSHIELD WASHER FLUID PUMP (BOTTOM OF WASHER FLUID RESERVOIR) WINDSHIELD WIPER MOTOR (UNDER LEFT SIDE OF WINDSHIELD COWL) WINSHIELD WIPER SW HI SIG WIPER CONTROL PCB RELAY WIPER HIGH SPEED DIODE WIPER LOW SPEED DIODE WIPER SPEED PCB RELAY WNDSHLD WIPER SW SIG 2 YEL WIRE