GMC Sierra 3500 (2002-2006) Wiring diagram engine performance 8.1l vin gs

B+ CLS 2 DATA CLS 2 DATA SENS RTN REF LOW BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/RED WIRE CMP ECT SIG IGN COOLANT LEV DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE FUSE GND SENS GND PPL GRY WIRE HOT AT ALL TIMES HOT IN RUN, START HOT IN RUN, START LEFT I/P FUSE BLOCK IGN 0 FUSE INJA FUSE FUSE INJB FUSE INJECTORS KS SIGNAL CKP REQ TORQUE SERIAL DATA SERIAL DATA KS SIGNAL PTO STATUS LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OIL LEV PTO ENG KILL ORG/ WIRE ORG/BLK WIRE PNK IGN B+ REF LOW PTO ENABLE SENS GND WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL BRK SW P/N SW CLUTCH SW PPL PPL PPL PTO ENGAGE PPL/WHT WIRE RED/BLK WIRE SENS GND EGR INPUT TAN WIRE TRANSMISSION CONTROL SYSTEM UNDER- HOOD JUNCTION BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

18 19 PPL PNK PNK WIRE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/RED WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE ECM-B FUSE ENGINE COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) ENGINE COOLANT TEMPERATURE SENSOR (MIDDLE OF RIGHT CYLINDER HEAD) ENGINE OIL LEVEL SWITCH (RIGHT SIDE OF OIL PAN) FUEL PUMP RELAY 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 KNOCK KNOCK SENSOR 1 SENSOR 2 (LEFT SIDE (RIGHT SIDE OF ENGINE) OF ENGINE) LT BLU WIRE LT GRN WIRE LT GRN/WHT WIRE NCA WIRE ORG/BLK WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PPL PPL/WHT WIRE PRIMARY FUEL PUMP/ LEVEL SENSOR (IN FUEL TANK) RED/WHT WIRE SECONDARY FUEL PUMP RELAY SECONDARY FUEL PUMP/ LEVEL SENSOR (IN FUEL TANK) TAN WIRE UNDER- HOOD JUNCTION BLOCK WHT WIRE WHT/ BLK WIRE YEL WIRE

18 19 PPL PNK PNK WIRE A/T BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY JUNCTION BLOCK BRAKE FUSE BRN WIRE BRN/RED WIRE CAMSHAFT POSITION SENSOR (LEFT SIDE OF TIMING COVER) CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) CRUISE CONTROL SYSTEM CRUISE FUSE DEL TORQUE DK BLU WIRE DK BLU/WHT WIRE DK GRN GRY WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE VALVE (TOP RIGHT REAR OF ENGINE) EXHAUST GAS RECIRCULATION VALVE (TOP REAR OF ENGINE) FOG LAMPS FUSE FUEL TANK PRESSURE SENSOR (IN FUEL TANK) GRY LT GRN WIRE GRY WIRE HOT IN HOT IN RUN, START IND LOGIC LEFT I/P FUSE BLOCK LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE M/T MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) MIL REQ OFF ON SET ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE POWER TAKE OFF RELAY (UNDER- HOOD JUNCTION BLOCK) POWER TAKE OFF SWITCH PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE REQ TORQUE RUN WIRE STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TAN/BLK WIRE UNDER- HOOD JUNC- TION BLOCK UNM TOR VSS VSS ADAPTER (LEFT SIDE OF TRANS) VSS SIG WHT WIRE YEL WIRE

ACCELERATOR PEDAL POSITION SENSOR ACT CNTRL APP SENS APP SENS 1 APP SENS 2 APP SENS 3 APP SENSE 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 ETC FUSE GROUND GRY WIRE GRY/BLK WIRE HOT IN RUN OR START IAT SENSOR IGN LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MASS AIRFLOW SENSOR (IN AIR INTAKE DUCT) ORG/BLK WIRE PNK PNK WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE R/A INPUT RED WIRE RED/WHT WIRE S/C INPUT SENS 1 GRD SENS 1 RT SENS 2 GRD SENS 2 RT SENS 3 GRD SENS 3 RT SENS GRD SIGNAL STP LP IN TAN WIRE TAN/BLK WIRE THROTTLE ACTUATOR CONTROL (TAC) MODULE (RIGHT REAR OF ENGINE COMPT) THROTTLE ACTUATOR CONTROL MOTOR (NEAR FRONT OF ENGINE COMPT) THROTTLE POSITION SENSOR (DUAL TRACK) (NEAR FRONT OF ENG COMPT) TP SENS 1 TP SENS 2 UNDER- HOOD JUNCTION BLOCK VEH STOP FUSE WHT WIRE WHT/BLK WIRE 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 GND TCC CTRL SEC FUEL PMP A/C CLU A/C REQ A/C SYSTEM A/C SYSTEM 1310 419 ANTI-LOCK BRAKE SYSTEM (SPEED SIGNAL) AUTOMATIC TRANSFER CASE CONTROL MODULE (ABOVE HEADLIGHT SWITCH) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM CRUISE ENG CTRL DELIVERED TORQ DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EGR CTRL EVAP VENT MIL CTRL FRONT AXLE SWITCH (RIGHT SIDE OF CENTER ON AXLE HOUSING) FRT AXLE SW VSS LOW FUEL PMP RPM OUT RECIRC SW FUEL SIG CTRL FUSE GEN F TRANS MIL FUEL LEV CYC SW IN GEN L GRY BLK/ WIRE GRY WIRE GRY/BLK WIRE HOT IN RUN, START IAT SIG IGN CTRL IGN CTRL IGN CTRL IGN CTRL PPL IGN IGN CTRL IGN CTRL IGN CTRL IGN CTRL IGN FEED GND EGR GND IGNITION COILS INSTRUMENT CLUSTER SYSTEMS (SPEED SIGNAL) INSTRUMENT PANEL CLUSTER MALFUNCTION INDICATOR LAMP LEFT I/P FUSE BLOCK LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE MAF SIG MAP SIG RECIRC DOOR EVAP CANP NCA NCA WIRE NCA WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE REF LO REF LOW REF LOW RPM OUT SEC FUEL LVL SENS GND SPARK PLUG SPARK SPARK PLUG PLUG STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TRANSFER CASE SWITCH (LEFT FRONT OF TRANSAXLE CASE) UNDER- HOOD JUNCTION BLOCK VSS OUT VSS OUT W/ ATC WHT WIRE YEL WIRE YEL/BLK WIRE