GMC Cab & Chassis Sierra 3500 (2004-2007) Ground distribution circuit, except hybrid

4.3L ENGINE 4.8L, 5.3L, 6.0L, 8.1L A/C COMPRESSOR CLUTCH A/C LOW PRESSURE SWITCH AUXILIARY BATTERY RELAY BATTERY (LEFT) BATTERY (RIGHT) BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE DIFFERENTIAL SWITCH COOLANT LEVEL SWITCH DAYTIME RUNNING LAMP (DRL) (LEFT) WINDSHIELD WASHER FLUID PUMP DAYTIME RUNNING LAMP (DRL) (RIGHT) DIESEL EXCEPT 4.3L BASE EXCEPT 4.3L ENGINE F/PMP RELAY FOG LAMP (LEFT) GAS GAS EXC 4.3L HIGH BEAM HEADLAMP (LEFT) HIGH BEAM HEADLAMP (RIGHT) LOW BEAM HEADLAMP (RIGHT) HORN (LEFT) HORN (RIGHT) FOG LAMP (RIGHT) IGN 1 RELAY (GAS) IGNITION COIL 1 IGNITION COIL 3 IGNITION COIL 2 IGNITION COIL 6 IGNITION COIL 4 IGNITION COIL 7 IGNITION COIL 5 IGNITION COIL 8 IGNITION CONTROL MODULE LOW BEAM HEADLAMP (LEFT) PARK/TURN SIGNAL LAMP (LEFT FRONT) PARK/TURN SIGNAL LAMP (RIGHT FRONT) POWER TAKE OFF CONNECTOR (BLUNT CUT) STARTER RELAY (DIESEL) THROTTLE ACTUATOR CONTROL MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UPFITTER OPTION W/ DUAL HORNS W/AUX BATTERY W/PTO WASHER FLUID LEVEL SENSOR WHT WIRE

8.1L 8.1L (W/ ALLISON) TRANSMISSION CONTROL MODULE ACTIVE, MANUAL SHIFT TRANSFER CASE ACTIVE, ELECT SHIFT TRANSFER CASE BLK WIRE BLK/WHT WIRE BUCKET CKP SENSOR SHIELD CMP SENSOR SHIELD CREW CAB CREW CAB CREW CAB DIESEL DRIVER SEAT ADJUSTER SWITCH WINDOW SWITCH) (LEFT REAR) ELECTRONIC BRAKE CONTROL MODULE ENGINE OIL LEVEL SWITCH EXC 8.1L W/O CALIF LEV EXCEPT 8.1L EXCEPT 8.1L 8.1L EXCEPT CREW CAB FUEL HEATER FUEL PRESSURE REGULATOR SHIELD FUEL PRESSURE SENSOR SHIELD FUEL PUMP FUEL PUMP, SENDER ASSEMBLY (PRIMARY) FUEL PUMP, SENDER ASSEMBLY (SECONDARY) GAS GLOW PLUG CONTROL MODULE GRN WIRE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE INTAKE AIR TEMPERATURE (IAT)/MASS AIRFLOW (MAF) SENSOR LEFT REAR DOOR LATCH ASSEMBLY LT GRN WIRE MANUAL SHIFT TRANSFER CASE MEMORY SEAT MODULE NCA WIRE NON BUCKET BUCKET NON- BUCKET PARK/ NEUTRAL POSITION SWITCH POWERTRAIN CONTROL MODULE REAR WINDOW DEFOGGER GRID RED WIRE SEAT ADJUSTER SWITCH (PASSENGER) SEAT BOLSTER/ LUMBAR SWITCH (FRONT PASSENGER) TRANSFER CASE SHIFT CONTROL MOTOR FRONT AXLE ACTUATOR TRANSFER CASE SHIFT CONTROL SWITCH WATER IN-FUEL SENSOR WHT WIRE

AUDIO AMPLIFIER BACK-UP ALARM BACKUP LAMP (LEFT) BACKUP LAMP- RIGHT BLK WIRE BLK/WHT WIRE CAMPER/ CHEVY GMC CHEVY GMC CLEARANCE LAMPS CRUISE CONTROL MODULE DATA LINK CONNECTOR EXCEPT DUAL WHEELS DUAL WHEELS (IN STEERING WHEEL CONTROLS HARNESS) EXCEPT LUXURY FROM I/P RELAY BLOCK (DIAGRAM 3 OF 4) HAZARD LAMPS SWITCH HEADLAMP DIMMER SWITCH HEADLAMP SWITCH I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) TO I/P RELAY BLOCK (DIAGRAM 3 OF 4) IGNITION KEY ALARM SWITCH TOW/HAUL SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL INSTRUMENT PANEL CLUSTER TIRE PRESSURE MONITOR MODULE LEFT FRONT RIGHT REAR LEFT REAR LEFT REAR TURN SIGNAL LAMP LICENSE LAMP (RIGHT) LICENSE LAMP- LEFT LUXURY (IN CONSOLE HARNESS) MULTI- FUNCTION ACCESSORY SWITCH TRACTION CONTROL SWITCH NCA WIRE RADIO TURN SIGNAL/ HAZARD FLASHER MODULE REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REAR SEAT AUDIO CONTROLLER REAR SEAT AUDIO CONTROLLER AUDIO AMPLIFIER REMOTE PLAYBACK DEVICE (CD PLAYER) (EXCEPT LUXURY) DIGITAL RADIO RECEIVER RIGHT FRONT RIGHT REAR TURN SIGNAL LAMP TAIL/STOP LAMP (LEFT) TAIL/STOP LAMP-RIGHT) TAILGATE MARKER LAMP TAN WIRE TRAILER WIRING PROVISION TRANSFER CASE SHIFT CONTROL MODULE TURN SIGNAL/ MULTIFUNCTION SWITCH VEHICLE COMMUNICATION INTERFACE MODULE REAR SEAT ENTERTAINMENT ASSEMBLY W/ DUAL WHEELS WHT WIRE WINDOW/ DOOR LOCK SWITCH (PASSENGER) WIPER SWITCH

A/T SHIFT LOCK SOLENOID AUTO A/C AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER MOTOR CONTROL PROCESSOR BLOWER MOTOR RESISTOR ASSEMBLY CIGAR LIGHTER CLEARANCE LAMPS DATA LINK CONNECTOR DOME LAMP (FRONT) CENTER HIGH MOUNTED STOP LAMP DOME/ READING LAMP (REAR) VANITY MIRROR LAMP (RIGHT) EXC LUXURY HD TRAILERING EQUIPMENT PROVISION ROOF MARKER LAMP (LEFT) HEADLAMP SWITCH HVAC CONTROL MODULE I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) I/P JUNCTION BLOCK (LOWER RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSIDE REARVIEW MIRROR LOCK RELAY UNLOCK RELAY LUXURY MAN A/C OVERHEAD CONSOLE PNK WIRE REAR WHEEL STEERING SWITCH RECIRCULATION ACTUATOR RIGHT COOLING FAN ROOF MARKER LAMP (RIGHT) SUNROOF CONTROL MODULE SUNROOF SWITCH SWITCH UNDERHOOD COOLING FAN FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) COOL/FAN RELAY 3 VANITY MIRROR LAMP (LEFT) W/ 5 LAMP ROOF MARKER W/O 5 LAMP ROOF MARKER WINDSHIELD WIPER MOTOR MODULE INSTRUMENT PANEL CLUSTER