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

22 20 5 8 19 CLASS 2 DATA LOW REF DOOR AJAR SIG CTSY LAMP POWER CTSY LAMP CTRL 22 3 18 13 4 CLASS 2 DATA LOW REF DOOR AJAR SIG CTSY LAMP POWER CTSY LAMP CTRL BATTERY B+ CTSY LAMP SUPPLY BATTERY B+ INADVERTENT PWR SUPPLY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRN WIRE CLASS 2 SERIAL DATA CONVENIENCE PACKAGE COMFORT, DECOR LEVEL #3 CTSY LAMP ON SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOME LAMP SWITCH DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (DDM) (IN LEFT FRONT DOOR) FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR MODULE (FPDM) (IN RIGHT FRONT DOOR) FUSE FUSE GRY/BLK WIRE HEADLAMP SWITCH HOT AT ALL TIMES I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INTERIOR LAMP DEFEAT SWITCH JUNCTION I/P BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) LEFT FRONT DOOR COURTESY LAMP LEFT REAR DOOR LATCH ASSEMBLY (CREW CAB) LF DOOR AJAR SIG CARGO LAMP LOW CTRL RF DOOR AJAR SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MERCHANDISED PACKAGE LUXURY EDITION ORG/ WIRE PPL PPL INT LAMP DEFEAT SIG RIGHT FRONT DOOR COURTESY LAMP RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB) RR DOOR AJAR SIG LR DOOR AJAR SIG TAN WIRE WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 BATT (+) 1150 (OR 1250) GND 1257 1258 TORSO BOLSTER IN CTRL TORSO BOLSTER OUT CTRL PPL 1523 1521 1520 HORIZ RWD SW SIG REAR VERT DN SW SIG FRT VERT DN SW SIG 2407 5701 1269 LUM MTR FWD CTRL TORSO BLSTR IN SW SIG RECLINE FWD SW SIG 2408 5702 LUM MTR RWD CTRL TORSO BLSTR OUT SW SIG RECLINE RWD SW SIG 2425 1048 SEATS SYSTEM HEATED SEAT TEMP SIG CLASS 2 SERIAL DATA 610 610 PNK PNK WIRE 940 1985 2432 5 VOLT REF 5 VOLT REF HTD SEAT BACK PWR BLK WIRE BLK/WHT 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'S SEAT ADJUSTER SWITCH FRT UP GRY/BLK WIRE GRY/RED WIRE HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) SEAT CIRCUIT BREAKER LT BLU WIRE LT GRN WIRE LUM MTR FWD CTRL LUM MTR RWD CTRL LUM MTR RWD CTRL MEMORY SEAT MODULE (UNDER LEFT FRONT SEAT) NOT USED NOT USED ORG/ WIRE PNK WIRE PNK/ SEATS SYSTEM WIRE PPL PPL TRSO BLSTR POS SENS SIG REC FWD REC RWD RECLINE MTR POS SEN SIG RED/WHT WIRE RR DWN RR UP FRT DWN RWD FWD SEATS SYSTEM SEATS SYSTEM HEATED SEAT TEMP SIG SEATS SYSTEM HTD SEAT BACK PWR TAN WIRE TAN/BLK WIRE WHT WIRE WHT/RED WIRE YEL WIRE YEL/BLK WIRE

12 13 14 PNK WIRE 2 3 4 5 6 7 8 PNK WIRE 20 21 PPL 9 10 11 12 13 PNK WIRE ACTUATOR FUSE BLK WIRE BLK/WHT WIRE BRN WIRE CLOSED BELOW 8 DEG C (46 DEG F) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM RELAY ECM-B FUSE ECU FUSE F/ PUMP RELAY FUEL HEATER (TOP OF FUEL FILTER ELEMENT) FUEL HTR FUSE FUEL INJECTORS FUEL RAIL PRESSURE SENSOR (UNDER INTAKE MANIFOLD SHIELD, ON FUEL RAIL) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 23 24 25 26 27 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL 28 29 30 31 PPL/WHT WIRE RED/BLK WIRE TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CRANKSHAFT POSITION SENSOR (RIGHT SIDE OF ENGINE) CRUISE CONTROL SYSTEM CRUISE FUSE DK BLU WIRE DK GRN/WHT WIRE FOG LP FUSE FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK IND LOGIC LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR NCA WIRE OFF ON ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE POWER TAKE OFF RELAY (NEAR UNDERHOOD FUSE BLOCK) POWER TAKE OFF SWITCH PPL PPL/WHT WIRE SET- TAN WIRE TURBOCHARGER VANE POSITION SENSOR UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE

1827 121 1020 2500 822 ANTI-LOCK BRAKES SYSTEM 23 1786 420 STARTING/ CHARGING SYSTEM 3 4 PNK WIRE 439 1320 25 2524 EXTERIOR LIGHTS SYSTEM STARTING/ CHARGING SYSTEM 5764 470 380 1589 INSTRUMENT CLUSTER SYSTEM 6-SPEED M/T 5-SPEED A/T A/C SYSTEM A/C SYSTEM INSTRUMENT CLUSTER SYSTEM ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL COMPUTER DATA LINES SYSTEM DATA BUS - VSS SIG DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EGR MOTOR HIGH LOW REF A/C REFRIG SIG FUEL LEVEL SENSOR SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) EXC SEO FUEL PUMP LOW REF FUEL RAIL TEMPERATURE (FRT) SENSOR FUSE GENERATOR SIG PARK/NEUTRAL SIG TCC BRAKE SIG GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IND INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL CLUSTER INTERNAL MODE SWITCH IPC/DIC FUSE LOW REF MIL CONTROL A/C COMPRESS LT BLU WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE PNK IGN 1 + CHMSL + CHARGE IND GENERATOR 2 SIG WIRE PNK PNK WIRE PNK WIRE PPL PPL 5 6 7 8 PPL PTO CONTROL ECM RELAY PPL/BLK WIRE PPL/WHT WIRE RED/BLK WIRE RPM OUT SEO TAN WIRE TAN/WHT WIRE TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) UNDERHOOD FUSE BLOCK VEHICLE SPEED SENSOR (LEFT REAR SIDE OF TRANS) VEHICLE SPEED SIG VEHICLE SPEED SIG ENG SPEED SIG IGN 0 + DATA BUS + VSS LOW SIG WAIT TO WAIT TO START WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

A/C SYSTEM ANTI-LOCK BRAKES SYS B+ CLS 2 DATA BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CMP SIG ECT SIG IGN INJ 5 CTRL INJ 8 CTRL PTO ENGAGE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FUSE FUSE FUSE GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START I/P FUSE BLOCK IGN 0 FUSE INJ 7 CTRL INJ 4 CTRL INJECTORS KS SIGNAL CKP SIG REQ TORQ SIG SERIAL DATA SERIAL DATA KS SIGNAL PTO STATUS LEV SW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV SW SIG PTO ENG KILL ORG/ WIRE ORG/BLK WIRE PCMB FUSE PNK IGN B+ REF LOW PTO ENABLE SW REF LOW GND WIRE PNK PNK 2 3 WIRE PNK PNK 27 28 WIRE PNK PNK 4 5 6 7 8 9 10 11 12 13 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (LEFT FRONT OF ENGINE COMPT) PPL PPL BRK SW SIG P/N SIG CPP SW SIG INJ 1 CTRL INJ 6 CTRL PPL PPL PPL PPL 31 32 33 34 35 36 37 PPL/WHT WIRE RED/BLK WIRE REF LOW REF LOW GND RLY CTRL GND STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDER- HOOD FUSE BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 PNK WIRE ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (MIDDLE OF RIGHT CYLINDER HEAD) ENGINE OIL LEVEL SWITCH (RIGHT SIDE OF OIL PAN) FUEL PUMP RELAY FUEL PUMP RELAY (SECONDARY) (DUAL TANKS) (ON UNDERHOOD FUSE BLOCK BRACKET) FUEL PUMP, SENDER ASSEMBLY (PRIMARY) (IN FUEL TANK) GRY WIRE HEATED OXYGEN SENSOR (BANK 1 SENSOR 1) (LEFT EXH PIPE, BEFORE CONVERTER) HEATED OXYGEN SENSOR (BANK 1 SENSOR 2) (LEFT EXH PIPE, AFTER CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 1) (RIGHT EXH PIPE, BEFORE CONVERTER) HEATED OXYGEN SENSOR (BANK 2 SENSOR 2) (RIGHT EXH PIPE, AFTER CONVERTER) HOT AT ALL TIMES HOT IN RUN, START INTERNAL MODE SWITCH KNOCK SENSOR (BANK 1) (LEFT SIDE OF ENGINE) KNOCK SENSOR (BANK 2) (ON RIGHT SIDE OF ENGINE) LT BLU WIRE LT GRN WIRE NCA WIRE ORG/BLK WIRE PCM B FUSE PNK PNK 2 3 WIRE PNK PNK 27 28 WIRE PNK PNK 4 5 6 7 8 9 10 11 12 13 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL PPL 31 32 33 34 35 36 37 PPL/BLK WIRE PPL/WHT WIRE RED/WHT WIRE SBA FUSE TAN WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK WHT WIRE YEL WIRE

1 2 PNK WIRE BLK WIRE BLK/WHT WIRE BLUNT CUT BLUNT CUT BLUNT CUT) BRAKE FUSE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (LEFT SIDE OF TIMING COVER) CRUISE CONTROL SYSTEM CRUISE FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN GRY WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (LEFT REAR OF ENGINE) EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID (RIGHT FRONT SIDE OF FUEL TANK) FOG LP FUSE FUEL TANK PRESSURE SENSOR (ON FUEL TANK) GRY LT GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK IND LOGIC LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) OFF ON SET ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER TAKE OFF RELAY (NEAR UNDERHOOD FUSE BLOCK) POWER TAKE OFF SWITCH PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM UNDER- HOOD FUSE BLOCK UNDERHOOD FUSE BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION/ TRANSFER CASE) WHT WIRE YEL WIRE

ACT CNTRL APP SENS 1 APP SENS 2 BLK WIRE BLK/WHT WIRE BRN WIRE CRUISE CONTROL SYSTEM CRUISE REQ DATA DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ECT/ECM FUSE FUSE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BLOCK IGN LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/WHT WIRE REF LOW S/C INPUT SIGNAL STP LP IN TAC CTRL TAN WIRE TAN/WHT WIRE THROTTLE ACTUATOR CONTROL MODULE (LEFT REAR OF ENGINE COMPT) TP SENS 1 TP SENS 2 UNDERHOOD FUSE BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE YEL WIRE

400 (OR 821) A/C SYSTEM A/C SYSTEM STARTING/CHARGING SYSTEM A/T ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CLU RLY CTRL CLUTCH SW AXLE SW SIG VSS LOW SIG VSS HIGH SIG CRANK FUSE CTRL DELIVERED TORQ DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANP CTRL EVAP VENT CTRL MIL CTRL EXC SEO FUEL LEV SENS FUEL PRESS SIG FUSE GEN GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN START IAT SIG IGN CTRL IGN CTRL IGN CTRL IGN CTRL PPL IGN IGN CTRL IGN CTRL IGN CTRL IGN CTRL IGN FEED GND IGNITION COILS INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL CLUSTER IPC/DIC FUSE LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE M/T MAF SIG MAP SIG MIL REQUEST NCA WIRE ORG/ WIRE ORG/BLK WIRE PMP RLY CTRL RPM OUT PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (LEFT FRONT OF ENGINE COMPT) PPL PPL FUEL LEV SIG PPL PNK PNK WIRE PPL/WHT WIRE PRESS SENS SIG IND CTRL RED WIRE RED/BLK WIRE RED/WHT WIRE REF LO REF LOW REF LOW PRESS SENS SIG CRANK VOLT REF LOW REF LOW RPM OUT SEO SPARK PLUG SPARK PLUG SPARK PLUG STARTING SYSTEM STARTING SYSTEM TRANSMISSIONS SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANS- MISSION CONTROL MODULE UNDER- HOOD FUSE BLOCK VSS OUT VSS OUT WHT WIRE YEL (OR PPL/WHT) WIRE YEL WIRE YEL/BLK WIRE