Chevrolet Silverado 1500 HD (2001-2006) underhood junction block Wiring diagrams

5.3L W/DUAL BATTERIES ABS FUSE VSES/ ECAS FUSE AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY (LEFT) BATTERY (RIGHT) BATTERY (RIGHT) (W/AUX BATTERY) BATTERY FUSE BLK WIRE BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO REAR SEAT RADIO AUDIO (RSA) RECEIVER CONTROLLER EAP FUSE SUNROOF FUSE ELECTRONIC BRAKE CONTROL MODULE EMERGENCY EXCEPT LUXURY EXCEPT LUXURY EXCEPT LUXURY FUSE FUSE HOLDER FUSIBLE LINK GENERATOR I/P RELAY BLOCK (LEFT OF STEERING COLUMN) IGN B FUSE IGN A FUSE LUXURY MEGAFUSE NCA WIRE ORG/ WIRE RADIO AMP FUSE RADIO DIGITAL RADIO RECEIVER RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER AUDIO AMPLIFIER REAR WHEEL EVAPORATIVE STEERING EMISSIONS CONTROL CANISTER VENT MODULE SOLENOID REAR WHEEL) RED WIRE RTD FUSE RR WIPER FUSE STARTER STARTER RELAY STEERING CONTROL MODULE STUD 1 FUSE STUD 2 FUSE TBC BATT FUSE TO IPC/DIC FUSE (DIAGRAM 2 OF 6) TO TO IGNITION IGNITION SWITCH SWITCH (DIAGRAM (DIAGRAM 6 OF 6) 5 OF 6) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UNDERHOOD JUNCTION BLOCK UPFITTER BATTERY JUNCTION BLOCK VEHICLE ROOF LAMP RELAY W/ VSES W/AUX BATTERY W/O VSES WHT WIRE

5.3L W/DUAL BATTERIES ABS FUSE VSES/ ECAS FUSE AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY (LEFT) BATTERY (RIGHT) BATTERY (RIGHT) (W/AUX BATTERY) BATTERY FUSE BLK WIRE BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO REAR SEAT RADIO AUDIO (RSA) RECEIVER CONTROLLER EAP FUSE SUNROOF FUSE ELECTRONIC BRAKE CONTROL MODULE EMERGENCY EXCEPT LUXURY EXCEPT LUXURY EXCEPT LUXURY FUSE FUSE HOLDER FUSIBLE LINK GENERATOR I/P RELAY BLOCK (LEFT OF STEERING COLUMN) IGN B FUSE IGN A FUSE LUXURY MEGAFUSE NCA WIRE ORG/ WIRE RADIO AMP FUSE RADIO DIGITAL RADIO RECEIVER RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER AUDIO AMPLIFIER REAR WHEEL EVAPORATIVE STEERING EMISSIONS CONTROL CANISTER VENT MODULE SOLENOID REAR WHEEL) RED WIRE RTD FUSE RR WIPER FUSE STARTER STARTER RELAY STEERING CONTROL MODULE STUD 1 FUSE STUD 2 FUSE TBC BATT FUSE TO IPC/DIC FUSE (DIAGRAM 2 OF 6) TO TO IGNITION IGNITION SWITCH SWITCH (DIAGRAM (DIAGRAM 6 OF 6) 5 OF 6) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UNDERHOOD JUNCTION BLOCK UPFITTER BATTERY JUNCTION BLOCK VEHICLE ROOF LAMP RELAY W/ VSES W/AUX BATTERY W/O VSES WHT WIRE

AMBIENT LIGHT SENSOR (TOP CENTER OF DASH) ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM DOOR LOCKS SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (NEAR LEFT KICK PANEL) BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH) BRN WIRE CARGO LP SW INPUT INTERIOR LAMP CTRL FLASH TO PASS SW SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR LATCH SW SIG COURTESY LAMP PWR DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DRIVER DOOR KEY SW SIG LF DR OPEN SW SIG FRONT FOG LP SW INT LP DEFEAT SW SIG DRL RLY COIL CLASS 2 DATA GROUND IGN 1 EXTERIOR LIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM FOG LP RLY CTRL EXTERIOR COURTESY LPS RLY CTRL GROUND BATTERY DOOR UNLOCK CTRL DOOR LOCK CTRL GRY WIRE GRY/BLK WIRE HEADLAMP SW INPUT LED DIM SIG VSS HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM ENGINE CONTROLS SYSTEM HOT AT ALL TIMES TBC FUSE HOT IN RUN CRUISE FUSE HOT IN RUN, START IGN 1 FUSE IGN 3 PRK BK SW SIG LT SEAT BELT SW TOW/HAUL SW SIG IGNITION KEY ALARM SWITCH INST PANEL LP PWR AMBIENT LIGHT SEN SIG INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM KEY IN IGN SW SIG LEFT I/P FUSE BLOCK LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT TURN SIG LAMP PWR RT TURN SIG LAMP PWR NCA WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH PNK WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM (RAP) INTERIOR LIGHTS SYSTEM HORNS SYSTEM PPL PPL HIGH BEAM INPUT INTERIOR PARK LP PWR PPL/WHT WIRE RAP RELAY CTRL INADVERTENT PWR RLY CTRL HORN RLY CTRL RED/WHT WIRE SECURITY SYSTEM SEN SIG SERIAL DATA TAN WIRE TOW/HAUL SWITCH UNDERHOOD JUNCTION BLOCK WARNING SYSTEM WHT WIRE YEL WIRE

54 (54 OR 394) AMBIENT LIGHT SENSOR (TOP CENTER OF DASH) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY JUNCTION BLOCK BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE CARGO LP CTSY LP FTP SW DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOOR SW KEY CYL SW LF DR SW FOG LP SW INT LP SW DRL RLY COIL CLASS 2 DATA GROUND IGN 1 FEED FOG LP RLY LAMP RELAY FUSE BLOCK GRY WIRE GRY/BLK WIRE HEADLAMP RLY LED DIM VSS WHEEL POS PASSLOCK SIG HEADLIGHTS SYSTEM COMPUTER DATA LINES SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HOT AT ALL TIMES TBC FUSE HOT IN RUN CRUISE FUSE HOT IN RUN, START IGN 1 FUSE IGN 3 INPUT PRK BK SW SEAT BELT SW TOW/HAUL SW IGNITION KEY ALARM SWITCH INST PANEL LP PHOTOCELL INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM KEY REMINDER LIFTGATE AJAR DOOR LATCH INADV PWR LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LT TURN INPUT RT TURN INPUT NCA WIRE ORG (ORG OR LT GRN/BLK) WIRE ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL HEADLP DIM PK LPS FEED PPL/WHT WIRE REAR PARKING ASSIST CHIME MODULE RED/WHT WIRE RFA LINK SERIAL DATA SENSOR RTN CTSY LP RLY DR UNLK RLY PK LP RLY TAN WIRE TOW/HAUL SWITCH UNDERHOOD JUNCTION BLOCK WARNING SYSTEM WARNINGS SYSTEM WARNINGS SYSTEM INTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM WHT WIRE YEL WIRE

BLK/WHT WIRE BODY JUNCTION BLOCK BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE) CLASS 2 DATA LAMP VOLTAGE BATTERY VSS RAP VOLT DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER GROUND GRY WIRE HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) RADIO FUSE HOT IN RUN AND START HOT IN RUN, START OR W/ RAP ENERGIZED IGN 1 FUSE INSTRUMENT PANEL CLUSTER INTERIOR LIGHTS SYSTEM 8 340 LEFT I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) ORG/ WIRE PNK IGN 1 VOLT WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) PPL DATA LINK CONNECTOR (BELOW STEERING COLUMN) RDO 1 FUSE UNDERHOOD JUNCTION BLOCK VSS VSS OUT WHT WIRE YEL WIRE

BASE BATTERY SERIAL DATA GROUND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY JUNCTION BLOCK BODY WIRING HARNESS JUNCTION BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BRN WIRE CGO DR JMB SW IN CRUISE FUSE DK BLU WIRE DK GRN WIRE DOOR JAMB SW IN EXTERIOR LIGHTS FUSE BLOCK GRY WIRE HDLMP RLY CNTRL PARK LIGHTS IN KEY IN IGN HEADLAMP, PANEL DIMMER SWITCH HOT AT ALL TIMES UNDERHOOD JUNCTION BLOCK TBC FUSE HOT IN RUN HOT IN RUN OR START HOT WITH PARK LIGHTS ON IGN 1 FUSE INSTRUMENT CLUSTER INT PRK FUSE KEY-IN IGNITION SWITCH LEFT CARGO DOOR AJAR SWITCH LEFT DOOR CONTACTOR LEFT LIFTGATE AJAR SWITCH LEFT MINI WEDGE SWITCH LEFT POWER WINDOW/ DOOR LOCK SWITCH LIFTGLASS AJAR SWITCH LOGIC LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK IGNITION 1 IGNITION 3 SEAT BELT INPUT WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (LEFT FRONT OF ENGINE COMPARTMENT) REAR WINDOW WIPER MODULE RIGHT CARGO DOOR AJAR SWITCH RIGHT DOOR CONTACTOR RIGHT LIFTGATE AJAR SWITCH RIGHT TURN INPUT LEFT TURN INPUT GROUND SEAT BELT IND SEAT BELT SWITCH (ON DRIVER'S SEAT BELT BUCKLE) TAN WIRE TURN SIGNAL/ MULITFUNCTION SWITCH UNDERHOOD JUNCTION BLOCK UTILITY W/CARGO DOORS UTILITY W/O CARGO DOORS WHT WIRE

3-2 SS LOW REF A/C SYSTEM B+ CLS 2 DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN/WHT WIRE CENTRAL SEQUENTIAL FUEL INJECTION CFAN RLY LO INJ 5 CTRL CKP SIG COOLING FANS SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE OIL PRESSURE (EOP) SENSOR FUEL INJECTORS 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 4 CTRL LOW REF LOW REF REF LOW LOW REF SENS GND LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PCMB FUSE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (LEFT FRONT OF ENGINE COMPT) PPL PPL PPL PPL/WHT WIRE PRND A BRK SW PRND P CLUTCH SW INJ 1 CTRL INJ 3 CTRL PPL PRND B CMP ECT SIG IGN INJ 2 CTRL INJ 6 CTRL RANGE B RANGE C IGN B+ REF LOW RED WIRE REF LOW GND RLY CTRL GND SENS GND GND SENSOR SIG STARTING SYSTEM TAN WIRE TAN/WHT WIRE UNDERHOOD JUNCTION BLOCK WHT WIRE YEL WIRE YEL/BLK WIRE