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

1 2 6 8 16 GND TCC PWM PC SOL HI PC SOL LO 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID A/T FLUID PRESSURE MANUAL MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR (IN TRANSMISSION) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE SENSOR (FRONT OF LEFT CYLINDER HEAD) EXCEPT SEO FLUID TEMP SENSOR FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START HOT IN RUN, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE P/N PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PCM B FUSE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (BELOW STEERING COLUMN) PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV RUN WIRE SEO SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TCC PWM SOLENOID TOW/HAUL SWITCH TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) PCM 1 FUSE VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

40 12 17 MIL CONTROL SIGNAL HIGH - FRONT PTO STATUS 73 36 GROUND GROUND 9 18 15 2 1 GROUND IGNITION CLASS 2 SERIAL DATA CAN DATA LO CAN DATA HI ALLISON TRANSMISSION TCC PWM SOLENOID SOLENOID BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM CAN DATA LO DATA LINK CONNECTOR DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM (IN ENGINE HARNESS) EXCEPT SEO FUSE GRN DK WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) PCM B FUSE HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 0 FUSE INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN LINE PRES 12 VOLT REF TCC SOL MALFUNCTION INDICATOR LAMP MIL SIGNAL OF TRANSMISSION) ON/OFF SOLENOIDS ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE P/N PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PARK/NEUTRAL SIG PNK 1049 2362 2361 WIRE PNK 451 2522 420 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL/WHT WIRE PRESSURE SWITCH MANIFOLD VEHICLE SPEED SENSOR RED WIRE RED/BLK WIRE REV RUN WIRE SEO SIG HI-FRONT COMPUTER DATA LINES SYSTEM 2361 2470 CAN DATA HI CLASS 2 DATA SPLICE PACK STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TFT SENSOR TRIM SOLENOIDS TFT SIGNAL TOW/HAUL SWITCH (IF EQUIPPED) TRANS MIL REQUEST TRANSFER CASE) TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) TURBINE SPEED SENSOR (IN TRANSMISSION) INPUT SPEED SENSOR (IN TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VSS ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE

2467 1694 TRQ RESPONSE ALLISON TRANSMISSION TCC PWM SOLENOID SOLENOID BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRAKE FUSE BRN WIRE BRN/WHT WIRE CLASS 2 DATA DATA LINK CONNECTOR DELIVD TORQUE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM (POWER TAKE OFF SWITCH) (IN ENGINE HARNESS) EXCEPT SEO FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 0 FUSE INSTRUMENT PANEL CLUSTER (IPC) IPC/DIC FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN LINE PRES 12 VOLT REF TCC SOL MALFUNCTION INDICATOR LAMP MIL SIGNAL OF TRANSMISSION) ON/OFF SOLENOIDS ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE P/N PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK 451 2522 420 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL/WHT WIRE PRESSURE SWITCH MANIFOLD RED WIRE RED/BLK WIRE REQST TORQUE REV TFT SENSOR TRIM SOLENOIDS RUN WIRE SEO SIG HI-FRONT SPLICE PACK STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TFT SIGNAL TOW/HAUL SWITCH TRANSFER CASE) TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) TURBINE SPEED SENSOR (IN TRANSMISSION) INPUT SPEED SENSOR (IN TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BATTERY) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) PCM B FUSE VEHICLE SPEED SENSOR VSS ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE

ABS FUSE ANTI-LOCK IND BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SW IN BRAKE FLUID LEVEL SWITCH (ON LEFT SIDE OF BRAKE FLUID RESERVOIR) BRAKE IN BRAKE IND BRN WIRE BRN/WHT WIRE CLUTCH START SWITCH (M/T) (TOP OF CLUTCH CLUTCH ASSY) DEL TORQUE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) EXCEPT SEO GRY WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) BRAKE FUSE HOT IN RUN OR START IGN E FUSE IGNITION LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) DELIVERED TORQUE INSTRUMENT CLUSTER LEFT FRONT WHEEL SPEED SENSOR LOGIC LT BLU WIRE LT GRN/BLK WIRE NCA WIRE OF TRANSFER CASE) OF TRANSMISSION) ORG/BLK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (DLC) (BELOW STEERING COLUMN) PPL PPL PPL/WHT WIRE RED WIRE REQ TORQUE RIGHT FRONT WHEEL SPEED SENSOR SEO SEO IGN FUSE STOPLAMP SWITCH (ON TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC BRAKE SW TRACTION CONTROL IND (IF EQUIPPED) TRACTION CONTROL SWITCH TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSIONS SYSTEM TRANSMISSIONS SYSTEM (TRANSFER CASE CIRCUIT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW VSS OUT 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 AIR TMP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 B(+) A/C ON AIR TEMP RF SUNLD AMB AIR TMP GMLAN L AMBIENT AIR TEMPERATURE SENSOR (ON LEFT SIDE OF RADIATOR SUPPORT) AMBIENT LIGHT/SUNLOAD SENSOR ASSEMBLY (TOP CENTER OF DASH) AUTO BATT POS VOLT BLK WIRE BLK/WHT WIRE BREAKOUT) BRN WIRE COLNT LVL GROUND LOW REF COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE ENGINE COOLANT LEVEL SWITCH (6.6L) (ON BOTTOM OF SURGE TANK) EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FAN DN FAN UP FRESH AIR FRNT DFG FRT DEF A/C IND FSH AIR GROUND GROUND DISTRIBUTION SYSTEM GROUND IGN 3 REAR DEFOG GRY WIRE GRY/BLK WIRE HVAC CONTROL MODULE INSTRUMENT PANEL CLUSTER (IPC) DRIVER INFORMATION CENTER (DIC) DISPLAY LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT SUNLOAD SENSOR LEFT TEMP CONTROL LF SUNLD L AIR TMP R AIR TMP LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE DN MODE UP MTR SPD CTRL OFF ORG/ WIRE POWER DISTRIBUTION SYSTEM DEFOGGER SYSTEM PPL PPL/WHT WIRE R AIR TMP AIR TMP R AIR TMP TEMP SENS MODE CTRL L AIR TMP RECIR CTRL R AIR TMP REAR DFG RECIR RECIRC RED WIRE RED/WHT WIRE RER DEF RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RIGHT SUNLOAD SENSOR RIGHT TEMP CONTROL SERIAL DATA TAN WIRE UPPER LEFT AIR TEMPERATURE SENSOR (UNDER UPPER LEFT SIDE OF DASH) UPPER RIGHT AIR TEMPERATURE SENSOR (UNDER UPPER RIGHT SIDE OF DASH) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

19 14 69 71 RLY SPD SIG 22 21 4 58 40 24 30 46 LOW REF ECT SENS SIG 6.0L 6.6L 4.8L, 5.3L,, 6.2L 4.3L A/C CMPRSR FUSE 17 (EXCEPT 6.6L) FUSE 16 (6.6L) A/C CMPRSR RELAY BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLING FAN (6.6L) (FRONT CENTER OF ENGINE COMPT) EXCEPT 6.6L 6.6L FROM PWR/TRN RELAY (DIAGRAM 3 OF 3) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC BATT FUSE 39 HVAC BLWR FUSE 70 HVAC IGN FUSE 55 (EXCEPT 6.6L) FUSE 52 (6.6L) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE ORG/BLK WIRE PNK WIRE PPL PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RLY CTRL RUN/ CRNK RELAY SENS SIG PWRTRN RLY CTRL FAN RLY CTRL FAN RLY CTRL SPD SIG LOW REF SYSTEM 459 5514 TAN WIRE TAN/BLK WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE COMPRSR RELAY (DIAGRAM 2 OF 3) COOLING FAN DIODE 1 COOLING FAN DIODE 2 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EXCEPT 6.0L FAN CNTRL RELAY FAN FUSE 68 FAN HI RELAY FAN LO RELAY FAN RELAY FAN-1 FUSE 60 FAN-2 FUSE 62 GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES LEFT AIR TEMPERATURE ACTUATOR (BOTTOM LEFT OF HVAC MODULE) LOGIC LEFT COOLING FAN (EXCEPT 6.0L) (LEFT FRONT OF ENGINE COMPT) LOGIC LOGIC B+ GND LOWER LEFT AIR TEMPERATURE SENSOR (LEFT SIDE OF HVAC MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (LOWER LEFT OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE ACTUATOR (LEFT END OF HVAC MODULE) ORG/BLK WIRE PPL PWR/ TRN RELAY RECIRCULATION ACTUATOR (TOP RIGHT SIDE OF HVAC MODULE) RIGHT AIR TEMPERATURE ACTUATOR (TOP MIDDLE OF HVAC MODULE) LOGIC RIGHT COOLING FAN (RIGHT FRONT OF ENGINE COMPT) TAN WIRE TO A/C UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE

193 735 1050 DEFOGGER SYSTEM A/C CMPRSR FUSE 17 (EXCEPT 6.6L) FUSE 16 (6.6L) A/C CMPRSR RELAY A/C IND A/C ON AMBIENT AIR TEMPERATURE SENSOR BATT POS VOLT BLK WIRE BLK/WHT WIRE COLNT LVL COMPUTER DATA LINES SYSTEM DFRST VAL FRH AIR BLWR SPD FRESH AIR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT LEVEL SWITCH (6.6L) (ON BOTTOM OF SURGE TANK) EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FROM PWR/TRN RELAY (DIAGRAM 3 OF 3) GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC BATT FUSE 39 (EXCEPT 6.6L) FUSE 36 (6.6L) HVAC BLWR FUSE 70 (EXCEPT 6.6L) FUSE 65 (6.6L) HVAC IGN FUSE 55 (EXCEPT 6.6L) FUSE 52 (6.6L) INTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM 6817 300 1851 3340 5060 LED CNTL IGN 3 GROUND B(+) GMLAN L LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LO REF RECIRC LOW REF LT GRN WIRE LT GRN/BLK WIRE MODE LOGIC SWITCH HVAC CONTROL MODULE MTR SPD CTRL ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE R AIR TMP SENS SIG MODE CTRL BLOWER MOTOR CONTROL SWITCH REAR DEFOG TEMP SENS GROUND REAR DFG RECIR RECIR CTRL R AIR TMP LOW REF LOW REF RED WIRE RED/BLK WIRE RED/WHT WIRE RER DEF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RUN/ CRNK RELAY TAN WIRE TEMPERATURE CONTROL SWITCH UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE COOLING FAN DIODE 1 COOLING FAN DIODE 2 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EXCEPT 6.0L FAN CNTRL RELAY FAN LO RELAY FAN-1 FUSE 60 FAN-2 FUSE 62 GRY WIRE GRY/BLK WIRE HI FAN RELAY HOT AT ALL TIMES LEFT COOLING FAN (LEFT FRONT OF ENGINE COMPT) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE PNK WIRE PPL/WHT WIRE PWR/ TRN RELAY RED WIRE RED/BLK WIRE RIGHT COOLING FAN (RIGHT FRONT OF ENGINE COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RLY CTRL TAN WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

4 58 22 21 30 46 LOW REF ECT SENS SIG 6.0L 6.6L 4.8L, 5.3L,, 6.2L 4.3L AIR TEMPERATURE ACTUATOR (TOP MIDDLE OF HVAC MODULE) BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) ENGINE COOLING FAN (6.6L) (FRONT CENTER OF ENGINE COMPT) EXCEPT 6.0L EXCEPT 6.6L 6.6L FAN FUSE 68 FAN RELAY GRY WIRE HEAD HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOGIC B+ GND LT BLU/BLK WIRE LT GRN WIRE MODE ACTUATOR (LEFT END OF HVAC MODULE) LOGIC NEAR FAN SHROUD) ORG/BLK WIRE RECIRCULATION ACTUATOR (FRONT A/C) (TOP RIGHT SIDE OF HVAC MODULE) SENS SIG FAN RLY CTRL PWRTRN RLY CTRL FAN RLY CTRL RLY SPD SIG LOW REF SPD SIG SERIAL DATA TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE