GMC Cab & Chassis Sierra 3500 (2004-2007) gasoline diesel Wiring diagrams

40 33 (DIESEL) (GAS) ABS FUSE ANTI-LOCK IND BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON LEFT SIDE OF BRAKE FLUID RESERVOIR) BRAKE IND BRN WIRE BRN/WHT WIRE CLUTCH START SWITCH (M/T) (TOP OF CLUTCH CLUTCH ASSY) CPP SW SIG DEL TORQUE SIG DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) EXCEPT SEO GASOLINE DIESEL GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) BRAKE FUSE IGN E FUSE IGNITION INSTRUMENT CLUSTER LEFT FRONT SENSOR (-) RIGHT FRONT SENSOR (+) BRAKE INPUT 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 OR ENGINE CONTROL MODULE (PCM OR ECM) (ON LEFT FRONT OF ENG COMPT) PPL PPL DATA LINK CONNECTOR (DLC) (BELOW STEERING COLUMN) PPL PPL PPL/WHT WIRE RED WIRE 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 TRANSMISSION CONTROL MODULE (TCM) (LEFT FRONT OF ENG COMPT) TRANSMISSIONS SYSTEM TRANSMISSIONS SYSTEM (TRANSFER CASE CIRCUIT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (VSS) VSS HIGH VSS LOW VSS OUTPUT YEL WIRE YEL/BLK WIRE

22 3 11 SERIAL DATA LEFT SEAT BELT LOW REFERENCE 22 3 18 SERIAL DATA LOW REFERENCE LEFT DOOR AJAR SW 22 5 20 SERIAL DATA DOOR AJAR SWITCH LOW REFERENCE BASE BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LATCH ASSEMBLY DRIVER DOOR MODULE (DDM) (IN DRIVER'S DOOR) DRIVER SEAT BELT SWITCH FRONT PASSENGER DOOR LATCH ASSEMBLY FRONT PASSENGER DOOR MODULE (FPDM) (IN RIGHT FRONT DOOR) GASOLINE DIESEL GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) IGN INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (UNDER LEFT FRONT SEAT) INSTRUMENT PANEL CLUSTER (IPC) LEFT TURN LOGIC LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK 1045 1044 WIRE PPL PPL 1132 1036 1037 1047 1046 RADIO RIGHT TURN SEAT BELT SERIAL DATA SUPPLEMENTAL RESTRAINTS SYSTEM TAN WIRE W/CONVENIENCE PACKAGE COMFORT, DECOR LEVEL 3 W/MEMORY SEATS WHT WIRE YEL WIRE

AMBIENT LIGHT SENSOR (ON TOP CENTER OF DASH) (EXC AUTO A/C) AMBIENT LIGHT SUNLOAD SENSOR ASSEMBLY (TOP OF INSTRUMENT PANEL) (AUTO A/C) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DAYTIME RUNNING LAMP (LEFT) DAYTIME RUNNING LAMP (RIGHT) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL DEFEAT DRL FUSE DRL RELAY FLASH TO PASS FOG LAMP (LF) FOG LAMP (RF) FOG LAMP SWITCH FOG LP FUSE FOG LP RELAY GASOLINE DIESEL GRY/BLK WIRE HDLP LOW RELAY HDLP-HI RELAY HEAD PARK AUTO HEAD- LAMP - HIGH BEAM (LEFT) HEAD- LAMP - HIGH BEAM (RIGHT) HEAD- LAMP - LOW BEAM (LEFT) HEAD- LAMP - LOW BEAM (RIGHT) HEADLAMP SWITCH HI BM RLY CTRL LO BM RLY CTRL DRL RLY CTRL FOG LP RLY CTRL HI HDLP LT FUSE HI HDLP RT FUSE HI/LO BEAM SELECT HLPS ON SIG FLASH TO PASS PK BRAKE SIG LOW REF HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LO HDLP LT FUSE LO HDLP RT FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MULTIFUNCTION ACCESSORY SWITCH ORG/ WIRE PARK BRAKE SWITCH (PART OF PARK BRAKE ASSEMBLY) PARK LP SW SIG AMBIENT LT SENS DRL SW SIG FOG LP SW SIG HDLP DIM SW SIG PNK WIRE PNK/WHT WIRE PPL SOUND SYSTEM TAN WIRE TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE YEL/BLK WIRE

71 39 7 59 9 58 (DIESEL) (GASOLINE) ALLISON A/T BLK WIRE BLK/WHT WIRE CHARGING CIRCUIT CLUTCH PEDAL POSITION SWITCH (M/T) (TOP OF CLUTCH PEDAL ASSEMBLY) COMPARTMENT) COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRANK FUSE DIESEL DIESEL 8.1L STARTER MOTOR DIESEL GASOLINE A/T EXCEPT ALLISON PNK PNK WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM (DIESEL) EXCEPT A/T EXCEPT DIESEL EXCEPT GASOLINE FUSE BLOCK MOBILE RADIO (UPFITTER OPTION) FUSIBLE LINK 3 (8 GA- FUSIBLE LINK 4 (14 GA- GRAY) GASOLINE GASOLINE DIESEL GASOLINE EXCEPT 8.1L GLOW PLUG CONTROL MODULE GRN WIRE IGN A FUSE IGN B FUSE IGN E FUSE IGNITION SWITCH INSTRUMENT PANEL CLUSTER JUNCTION BLOCK - BATTERY CABLE (NEAR LEFT SIDE OF ENG COMPT) LEFT BATTERY LOCK OFF M/T MEGA FUSE MEGA FUSE PARK/ NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANS) PNK 739 639 WIRE PNK PPL PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM (WRECKER/AUXILIARY BATTERY OPTION) PPL PPL 43 49 806 2470 CRANK VOLT SER DATA RED WIRE RUN WIRE STARTER RELAY STARTER SOLENOID RIGHT BATTERY TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENG COMPT) UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE ENG COMPT) W/ ALLISON A/T W/ ALLISON A/T A/T EXCEPT ALLISON YEL WIRE YEL/BLK WIRE