Ground distribution circuit for GMC Sierra 1500 HD (2001-2006)

A/C COMPRESSOR CLUTCH A/C HIGH PRESSURE RECIRCULATING SWITCH A/C LOW PRESSURE SWITCH AUTOMATIC TRANSMISSION CONTROL (ALLISON) AUXILIARY BATTERY RELAY BLK WIRE BLK/WHT WIRE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRAKE WINDSHIELD FLUID WIPER LEVEL UNDERHOOD MOTOR SWITCH LAMP MODULE COOLANT LEVEL SWITCH DATA LINK CONNECTOR (DLC) DIESEL DIESEL (RIGHT FRONT OF ENGINE) DUAL TANK ENGINE OIL LEVEL SWITCH FRONT WINDSHIELD WASHER FLUID PUMP FUEL HEATER FUEL INJECTION CONTROL MODULE (FICM) GAS GAS GAS GAS HEATED OXYGEN SENSOR COOLANT (BANK 2 LEVEL SENSOR 2) SWITCH GLOW PLUG/ INTAKE HEATER RELAY ASSEMBLY HEADLAMP RELAY HEATED HEATED HEATED OXYGEN OXYGEN OXYGEN SENSOR SENSOR SENSOR IGN 1 FUEL PUMP RELAY RELAY IGNITION COIL IGNITION COILS (LEFT BANK) IGNITION COILS (RIGHT BANK) INSTRUMENT PANEL CLUSTER (IPC) LEFT BATTERY LEFT DAYTIME RUNNING LAMP (DRL) LEFT FRONT FOG LAMP LEFT HORN LEFT PARK/ TURN SIGNAL LAMP LT GRN WIRE MASS AIR FLOW CRUISE (MAF) CONTROL SENSOR MODULE MODULE NCA WIRE OTHER 4.3L GAS PARK/ THROTTLE NEUTRAL ACTUATOR POSITION CONTROL SWITCH MODULE PNK WIRE POWER TAKEOFF (PTO) POWERTRAIN CONTROL MODULE (PCM) RIGHT BATTERY RIGHT DAYTIME RUNNING LAMP (DRL) RIGHT FRONT FOG LAMP RIGHT HORN RIGHT PARK/ TURN SIGNAL LAMP SECONDARY FUEL FUEL PUMP, PUMP, SENDER SENDER ASSEMBLY ASSEMBLY STARTER RELAY TRANSFER CASE SHIFT CONTROL MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ATC W/O ATC WASHER FLUID LEVEL SENSOR WATER IN-FUEL SENSOR WHT WIRE YEL WIRE

5.3L FLEX FUEL A/C COMPRESSOR CLUTCH A/C LOW PRESSURE SWITCH ACTIVE, ELECT SHIFT TRANSFER CASE ACTIVE, MANUAL SHIFT TRANSFER CASE AUXILIARY BATTERY RELAY BATTERY (LEFT) BATTERY (RIGHT) BLK WIRE BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE DIFFERENTIAL SWITCH COOLANT LEVEL SWITCH DAYTIME RUNNING LAMP (DRL) (LEFT) DAYTIME RUNNING LAMP (DRL) (RIGHT) DIESEL ELECTRONIC BRAKE CONTROL MODULE EXCEPT 4.3L BASE F/PMP RELAY FOG LAMP (LEFT) FUEL COMPOSITION SENSOR FUEL PUMP FUEL PUMP, SENDER ASSEMBLY (SECONDARY) GAS GAS (LEFT REAR OF ENGINE BLOCK) GAS EXC 4.3L GAS W/AUX BATTERY HIGH BEAM HEADLAMP (LEFT) HORN (LEFT) HORN (RIGHT) FOG LAMP (RIGHT) IGN 1 RELAY (GAS) INFLATABLE RESTRAINT PASSENGER PRESENSE MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LOW BEAM HEADLAMP (LEFT) LOW BEAM HIGH BEAM HEADLAMP HEADLAMP (RIGHT) (RIGHT) MANUAL SHIFT TRANSFER CASE NCA WIRE PARK/TURN SIGNAL LAMP (LEFT FRONT) PARK/TURN SIGNAL LAMP (RIGHT FRONT) POWER TAKEOFF CONNECTOR (BLUNT CUT) REAR WHEEL STEERING CONTROL MODULE ROOF BEACON RELAY ROOF MOUNTED BEACON (BLUNT CUT) THROTTLE ACTUATOR CONTROL MODULE TRANSFER CASE SHIFT CONTROL SWITCH TRANSFER CASE SHIFT FRONT CONTROL AXLE MOTOR ACTUATOR UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) W/ DUAL HORNS W/AUX BATTERY W/PTO WASHER FLUID LEVEL SENSOR WINDSHIELD WASHER FLUID PUMP

A/T INFLATABLE SHIFT RESTRAINT LOCK IP MODULE SOLENOID SWITCH AIR TEMPERATURE ACTUATOR ASHTRAY LAMP BASE BASE EXCEPT CREW CAB BIN LAMP) BLK WIRE BLOWER MOTOR SWITCH BODY INSTRUMENT CONTROL PANEL MODULE CLUSTER (IPC) (BCM) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) CENTER HIGH MOUNTED DIMMER STOP/ SWITCH LAMP CIGAR LIGHTER CLEARANCE LAMPS COURTESY LAMP RELAY CREW CAB DATA LINK CONNECTOR (DLC) DOOR TURN/ LOCKS HAZARD RELAY FLASHER DRIVER DRIVER DOOR MINI WEDGE KEY (DOOR JAMB SWITCH SWITCH) DRIVER MINI DRIVER WEDGE DOOR (DOOR JAMB LOCK SWITCH) SWITCH RADIO DRIVER WINDOW/ DOOR LOCK SWITCH EMERGENCY VEHICLE ROOF LAMP RELAY FOG/ CARGO LAMP SWITCH FRONT PASSENGER DOOR LOCK SWITCH FRONT PASSENGER MINI-WEDGE DOOR JAMB SWITCH HEAVY DUTY IGNITION KEY ALARM SWITCH LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT ROOF MARKER LAMP LUXURY MODE ACTUATOR NCA WIRE PARK POSITION SWITCH POWER DOOR LOCK SWITCH POWER TAKE OFF SWITCH POWER WINDOW SWITCH RECIRCULATION DOOR MOTOR REMOTE CONTROL DOOR LOCK RECIEVER RIGHT ROOF MARKER LAMP TO BODY RELAY BLOCK (PAGE 4 OF 4) TOW/ HAUL SWITCH TRACTION CONTROL SWITCH TRAILER WIRING TRANSFER CASE SHIFT CONTROL SWITCH UPLEVEL, BASE EXCEPT CREW CAB CREW CAB

AVALANCHE/ ESCALADE EXT BLK WIRE BLK/WHT WIRE CENTER HIGH MOUNT STOP LAMP DOOR COURTESY LAMP (LEFT REAR) DOOR COURTESY LAMP (RIGHT REAR) ELECTRONIC SUSPENSION CONTROL MODULE ESCALADE EXT EXC 8.1L W/O CALIF LEV EXC ESCALADE EXT HEATED HEATED SEAT SEAT MODULE ELEMENT (LEFT REAR) (LEFT REAR) HEATED SEAT ELEMENT (RIGHT REAR) HEATED SEAT MODULE (RIGHT REAR) IGNITION COIL 1 IGNITION COIL 5 IGNITION IGNITION COIL 2 COIL 6 IGNITION IGNITION COIL 3 COIL 7 IGNITION IGNITION COIL 4 COIL 8 INTAKE AIR TEMPERATURE (IAT)/MASS ENGINE AIRFLOW (MAF) OIL LEVEL SENSOR SWITCH MEMORY SEAT MODULE (PASSENGER) MINI WEDGE (DOOR JAMB SWITCH) (LEFT REAR) MINI WEDGE (DOOR JAMB SWITCH) (RIGHT REAR) NCA WIRE PARK/ NEUTRAL POSITION SWITCH POWERTRAIN CONTROL MODULE REAR OBJECT SENSOR CONTROL MODULE REAR PARKING ASSIST DIAGNOSTIC CONNECTOR REAR WINDOW DEFOGGER GRID ROOF MEMORY WINDOW BEACON SEAT SWITCH) RELAY MODULE (LEFT REAR) ROOF MOUNTED BEACON (BLUNT CUT) WHT WIRE WINDOW CONTACTOR WINDOW SWITCH (RIGHT REAR)

AIR TEMPERATURE ACTUATOR AUTO A/C BASE PICKUP CENTENNIAL BLK WIRE BLOWER MOTOR RESISTOR ASSEMBLY CREW CAB DOOR LOCK SWITCH DRIVER BACK HEATED SEAT ELEMENT DRIVER CUSHION HEATED SEAT ELEMENT DRIVER FRONT SEAT PASSENGER ADJUSTER SEAT ADJUSTER SWITCH SWITCH DRIVER MEMORY BOLSTER/ SEAT LUMBAR MODULE SWITCH DRIVER SEAT ADJUSTER SWITCH EXCEPT BASE CREWCAB EXCEPT BASE PICKUP EXCEPT CREW CAB EXCEPT CREWCAB FRONT PASSENGER CUSHION HEATED SEAT ELEMENT FRONT PASSENGER HEATED SEAT SWITCH FRONT PASSENGER LUMBAR/ BOLSTER SWITCH FRONT PASSENGER MINI-WEDGE DOOR JAMB SWITCH FRONT PASSENGER SEAT ADJUSTER SWITCH FRONT PASSENGER WINDOW/ DOOR LOCK SWITCH FRONT REAR SEAT PASSENGER AUDIO (RSA) DOOR LOCK CONTROLLER SWITCH FULL FEATURE SEAT HVAC CONTROL MODULE I/P COMPART- MENT LAMP INFLATABLE RESTRAINT (BASE SEAT) SENSING, SEAT BELT DIAGNOSTIC SWITCH MODULE LEFT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) LEFT REAR MINI WEDGE ROOF (DOOR JAMB BEACON SWITCH) RELAY MODE ACTUATOR MOTOR NCA WIRE PASSENGER OUTSIDE REARVIEW MIRROR POWER SEAT POWER WINDOW SWITCH RADIO RAP 2 RELAY REAR LAMPS JUNCTION BLOCK (FRONT OF REAR BUMPER ON CROSSMEMBER) RECIRCULATION ACTUATOR RIGHT LICENSE LAMP RIGHT REAR RIGHT TAIL/ BACK-UP STOPLAMP LAMP RIGHT REAR ROOF WINDOW DEFOGGER RIGHT REAR TURN SIGNAL LAMP ROOF BEACON GROUND ROOF BEACON RELAY ROOF MARKER LAMPS SEAT BELT SWITCH SEAT HARNESS) UPLEVEL CREWCAB WHT WIRE WINDOW LOCK OUT

A/T INSTRUMENT SHIFT PANEL HEADLAMP LOCK CLUSTER SWITCH SOLENOID AIR TEMPERATURE SENSOR ASSEMBLY (INSIDE FRONT) AIR TEMPERATURE SENSOR ASSEMBLY (INSIDE REAR) ANALOG CLOCK AUTO A/C AUTO A/C EXC AVALANCHE/ ESCALADE EXT AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER MOTOR BLOWER MOTOR RECIRCULATION RESISTOR ACTUATOR ASSEMBLY BOSE EXC LUXURY CIGAR LIGHTER CLEARANCE LAMPS CLEARANCE SWITCH COURTESY LAMP ("B" PILLAR) COURTESY LAMP (RIGHT) DOME LAMP (FRONT) DOME READING CENTER LAMP HIGH (REAR) MOUNTED STOP LAMP DRIVER DOOR MODULE EXC CAD EXT CAD FRONT PASSENGER DOOR MODULE HEATED SEAT SWITCH (LEFT REAR) HEATED SEAT SWITCH (RIGHT REAR) HVAC CONTROL ASSEMBLY (FRONT AUXILIARY) HVAC CONTROL MODULE I/P COMPARTMENT LAMP I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) INSIDE REARVIEW MIRROR LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LUXURY MAN A/C OVERHEAD CONSOLE READING LAMP (REAR) REAR WHEEL STEERING SWITCH RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) ROOF BEACON SWITCH ROOF MARKER I/P LAMP COURTESY (LEFT) LAMP (LEFT) DATA LINK CONNECTOR ROOF MARKER LAMP (RIGHT) SUNROOF RELAY TRANSFER CASE SHIFT CONTROL SWITCH UNDERHOOD LAMP SUNROOF MOTOR UNLOCK LOCK RELAY RELAY VISOR LAMP (LEFT) VISOR LAMP (RIGHT) WINDSHIELD WIPER MOTOR MODULE

AUTOMATIC DAY/NIGHT REARVIEW MIRROR W/ COMPASS AUXILIARY AUXILIARY AUXILIARY POWER POWER POWER OUTLET OUTLET OUTLET AUXILIARY POWER OUTLET BLK WIRE BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) CENTENNIAL CENTER HIGH MOUNTED STOP LAMP CIGAR LIGHTER COURTESY LAMP RELAY COURTESY/ READING LAMP DATA LINK CONNECTOR (DLC) DIMMER SWITCH EMERGENCY VEHICLE ROOF LAMP RELAY EXCEPT BASE CREW CAB FOG/ CARGO LAMP SWITCH HEAVY DUTY IGNITION KEY ALARM SWITCH INSIDE AIR TEMPERATURE SENSOR ASSEMBLY LEFT VANITY MIRROR NCA WIRE PARK POSITION SWITCH READING LAMPS ASHTRAY LAMP REMOTE CONTROL DOOR LOCK RECIEVER RIGHT VANITY MIRROR ROOF BATTERY BEACON MONITOR SWITCH SELECTABLE RIDE SWITCH SIERRA W/ PRO THERMO CUPHOLDER ASSEMBLY TOW/ HAUL SWITCH TRACTION CONTROL SWITCH TRAILER WIRING TRANSFER CASE SHIFT CONTROL SWITCH UPLEVEL CREW CAB VEHICLE INTERFACE UNIT (VIU)

BLK WIRE BLK/WHT WIRE COLUMN SHIFT DATA LINK CONNECTOR DIGITAL RADIO RECEIVER EXC LUXURY HEADLAMP SWITCH HVAC CONTROL MODULE I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) IGNITION KEY ALARM SWITCH INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LUXURY MULTIFUNCTION TRACTION ACCESSORY CONTROL SWITCH SWITCH NCA WIRE RADIO REAR PARKING ASSIST DISABLE SWITCH REAR SEAT AUDIO AUDIO AMPLIFIER CONTROLLER REAR SEAT ENTERTAINMENT ASSEMBLY REMOTE PLAYBACK DEVICE (CD PLAYER) STEERING WHEEL DIC CONTROLS STEERING WHEEL SPEED/ POSITION SENSOR TAN WIRE THEFT DETERRENT CONTROL MODULE TOW/HAUL SWITCH TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION SHIFT SELECT SWITCH TURN SIGNAL/ HAZARD FLASHER MODULE TURN SIGNAL/ MULTIFUNCTION SWITCH VEHICLE COMMUNICATION INTERFACE MODULE VEHICLE REAR SEAT COMMUNICATION ENTERTAINMENT INTERFACE ASSEMBLY MODULE WHT WIRE WINDSHIELD HAZARD WIPER/WASHER LAMPS SWITCH SWITCH

AUTO A/C AUTOMATIC LEVEL CONTROL COMPRESSOR AUXILIARY REAR OBJECT POWER SENSOR OUTLET CONTROL (REAR) MODULE BACKUP LAMP- RIGHT BLK WIRE BLOWER MOTOR (REAR AUXILIARY) CARGO DOOR DOOR AJAR KEY SWITCH SWITCH (CARGO) CENTER HIGH MOUNT CONTROL STOP LAMP CLEARANCE CLEARANCE LAMP LAMP (LEFT (RIGHT FRONT) REAR) CLEARANCE LAMP (LEFT REAR) DOME LAMP ("D" PILLAR) DOOR CONTACT PLATE (LEFT CARGO BODY) DOOR CONTACT PLATE (LEFT CARGO DOOR) DOOR CONTACT PLATE (RIGHT CARGO BODY) DOOR CONTACT PLATE (RIGHT CARGO DOOR) ELECTRONIC SUSPENSION CONTROL MODULE ESCALADE EXC AVALANCE/ ESCALADE EXT ESCALADE FOUR WHEEL STEERING HVAC BLOWER CONTROL MOTOR ASSEMBLY (REAR (REAR AUXILIARY) AUXILIARY) HVAC CONTROL ASSEMBLY (REAR AUXILIARY) HVAC CONTROL ASSEMBLY BLOWER (REAR MOTOR AUXILIARY) (AUXILIARY) ID LAMP LAMP (RIGHT FRONT) LICENSE LAMP (RIGHT) LICENSE LAMP- LEFT LIFTGATE AJAR SWITCH LIFTGATE AJAR SWITCH (LEFT) LIFTGATE AJAR SWITCH (RIGHT) LIFTGATE KEY SWITCH MODE AIR ACTUATOR TEMPERATURE (REAR) ACTUATOR REAR A/C W/AUX HEATER REAR A/C W/O AUX HEATER REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REAR PARKING ASSIST DIAGNOSTIC CONNECTOR REAR WINDOW DEFOGGER GRID REAR WINDOW DEFOGGER GRID (LEFT CARGO) REAR WINDOW DEFOGGER GRID (RIGHT CARGO) SPLICE PACK STOP/TURN SIGNAL LAMP (RIGHT) STOP/TURN TAIL/STOP SIGNAL LAMP LAMP) (LEFT) (LEFT) SUBURBAN TAIL/STOP LAMP (RIGHT) BACKUP LAMP (LEFT) TRAILER CONNECTOR W/ CARGO DOORS W/CARGO DOORS W/LIFTGATE WIPER MODULE (REAR)