Explore Chevrolet Silverado fuse box diagrams in this detailed guide that covers the electrical layout of the original full-size pickup lineup. In this article, we consider the first-generation Chevrolet Silverado, produced from 1998 to 2007 , and provide fuse box diagrams for Chevrolet (Chevy) Silverado 1500, 1500HD, 2500HD and 3500HD for 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007 , along with information about the location of the fuse panels and the assignment of each fuse and relay (fuse layout).
The fuse box is located on the driver’s side of the instrument panel, behind the cover.
The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.
It is located in the engine compartment on the driver’s side of the vehicle next to the under-hood fuse box.
Fuse Data
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Assignment of the fuses in the Instrument Panel (1999-2002)
Fuse Data
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Name Usage HVAC 1 Climate Control System IGN 3 Ignition, Power Seats BRAKE Anti -Lock Brake System HTR A/C Climate Control System IGN 0 PRND321 Display, Odometer, PCM CRUISE Cruise Control, Instrument Panel Cluster 4WD Four-Wheel Drive System, Auxiliary Battery TURN Exterior Lamps, Turn Signals, Hazard Lamps RR WIPER Not Used WS WPR Windshield Wipers SEO IGN Special Equipment Option, Ignition, Manual Selectable Ride ILLUM Interior Lamps IGN 1 Ignition, Instrument Panel SEO ACCY Special Equipment Option Accessory, Cellular Telephone L BODY Retained Accessory Power Relay CRANK Starting System AIR BAG Air Bag MIR/LOCK Power Mirrors, Power Door Locks SEAT Power Seat Circuit Breaker DRLOCK Power Door Locks RAP #1 Retained Accessory Power Relay LOCK Power Door Locks INT PRK Interior Lamps UNLOCK Power Door Locks DRV UNLOCK Power Door Lock Relay L DOOR Power Door Lock Relay PWR WDO Power Window Circuit Breaker RDO 1 Audio System RAP #2 Not Used LOCK Power Door Lock Relay UNLOCK Power Door Lock Relay
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Fuse Data
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Center instrument panel relay box (1999-2002)
Fuse Data
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Short-Code Description SEO Special Equipment Option HTDST Heated Seats SPARE 4 Not Used VANITY Headliner Wiring TRAILER Trailer Brake Wiring PWRST Power Seats SPARE 5 Not Used CLUTCH Manual Transmission Clutch Switch UPF Upfitter PARK LAMP Parking Lamps (Relay) FRT PRK EXPT Not Used (Fuse) SL RIDE Manual Selectable Ride Switch SPARE 2 Not Used RR PRK LP Not Used (Relay) RR FOG LP Not Used (Relay) SPARE 3 Not Used INADV PWR Interior Lights Feed CTSY LP Courtesy Lamps CEL PHONE Cellular Telephone Wiring
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Fuse Data
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*1: INJ B – Gasoline Engine and Diesel Engine
Assignment of the fuses and relay in the Engine Compartment (1999-2002)
Fuse Data
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Short-Code Description GLOW PLUG Diesel Glow Plugs and Intake Air Heater CUST FEED Gasoline Accessory Power STUD #1 Accessory Power/Trailer Wiring Feed ABS Anti-Lock Brakes IGN A Ignition Switch AIR A.I.R. System RAP #1 Retained Accessory – Power, Power Mirrors, Power Door Locks, Power Seat(s) IGN B Ignition Switch RAP #2 Not Used STUD #2 Accessory Power/Trailer Wiring Brake Feed SPARE Spare Fuse TRL R TRN Right Turn Signal Trailer Wiring TRL L TRN Left Turn Signal Trailer Wiring IGN 1 Ignition, Fuel Controls (Relay) INJB Ignition, Fuel Controls STARTER Starter (Relay) PARK LP Parking Lamps FRT HVAC Climate Control System STOP LP Exterior Lamps, Stoplamps ECM I PCM ECMRPV Fuel Controls, ECM CHMSL Center High Mounted Stoplamp VEH STOP Stoplamps, Cruise Control TRL B/U Backup Lamps Trailer Wiring INJ A Fuel Controls, Ignition RR HVAC Not Used VEH B/U Vehicle Backup Lamps ENG 1 Engine Controls, Canister Purge, Fuel System ETC Electronic Throttle Control IGN E A/C Compressor Relay, Rear Window Defogger, Daytime Running Lamps, A.I.R. System B/U LP Backup Lamps, Automatic Transmission Shift Lock Control System ATC Automatic Transfer Case RR DEFOG Rear Window Defogger, Heated Mirrors (Relay) RR PRK Right Rear Parking Lamps ECM B PCM F/PMP Fuel Pump (Relay) 02 A Oxygen Sensors FUEL HT Fuel Heater, Glow Plug and Intake Heater Controls 02 B Oxygen Sensors LR PRK Left Rear Parking Lamps RR DEFOG Rear Window Defogger, Heated Mirrors HDLP Headlamps (Relay) TRL PRK Parking Lamps Trailer Wiring RT HDLP Right Headlamps DRL Daytime Running Lamps (Relay) HTD MIR Heated Mirrors LT HDLP Left Headlamps A/C Air Conditioning AUX PWR Cigarette Lighter, Auxiliary Power Outlets SEO 2 Special Equipment Option Power, Power Seats, Aux Roof Mnt Lamp SEO 1 Special Equipment Option Power, Aux Roof Mnt Lamp, Cell Phone, OnStar® DRL Daytime Running Lamps A/C A/C (Relay) FOG LP Fog Lamps FOG LP Fog Lamps (Relay) RADIO Audio System, Instrument Cluster, Climate Control System CIGAR Cigarette Lighter, Auxiliary Power Outlets RT TURN Right Turn Signals BTSI Automatic Transmission Shift Lock Control System LT TURN Left Turn Signals FR PRK Front Parking Lamps, Sidemarker Lamps W/W PMP Windshield Washer Pump HORN Horn (Relay) IGN C Ignition Switch, Fuel Pump, PRND321 Display, Crank RDO AMP Not Used HAZ LP Exterior Lamps, Hazard Lamps EXP LPS Not Used HORN Horn CTSY LP Interior Lamps RR WPR Not Used TBC Body Control Module, Remote Keyless Entry, Headlamps
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Fuse Data
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Assignment of the fuses in the Instrument Panel (2003-2005)
Fuse Data
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Short-Code Description RR Wiper Rear Wiper SEO ACCY Special Equipment Option Accessory WS WPR Windshield Wipers TBC ACCY Truck Body Controller Accessory IGN 3 Ignition, Heated Seats 4WD Four-Wheel Drive System, Auxiliary Battery HTR A/C Climate Control System LOCK (Relay) Power Door Lock Relay (Lock Function) HVAC 1 Climate Control System L DOOR Driver’s Door Harness Connection CRUISE Cruise Control, Power Take Off (PTO) UNLOCK (Relay) Power Door Lock Relay (Unlock Function) RR FOG LP Not Used BRAKE Anti-Lock Brake System DRIVER UNLOCK Power Door Lock Relay (Driver’s Door Unlock Function) IGN 0 TCM TBC IGN 0 Truck Body Controller VEH CHMSL Vehicle and Trailer High Mounted Stoplamp LT TRLR ST/TRN Left Turn Signal/Stop Trailer LT TRN Left Turn Signals and Sidemarkers VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module RT TRLR ST/TRN Right Turn Signal/Stop Trailer RT TRN Right Turn Signals and Sidemarkers BODY Harness Connector DDM Driver Door Module AUX PWR 2 Not Used LOCKS Power Door Lock System ECC Not Used TBC 2C Truck Body Controller FLASH Flasher Module CB LT DOORS Left Power Windows Circuit Breaker TBC 2B Truck Body Controller TBC 2A Truck Body Controller
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Fuse Data
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Center instrument panel relay box (2003-2007)
Fuse Data
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Short-Code Description SEO Special Equipment Option TRAILER Trailer Brake Wiring UPFIT Upftter (Not Used) SL RIDE Ride Control Harness Connection HDLR 2 Headliner Wiring Connector BODY Body Wiring Connector DEFOG Rear Defogger Relay HDLNR 1 Headliner Wiring Connector 1 SPARE RELAY Not Used CB SEAT Driver and Passenger Seat Module Circuit Breaker CB RT DOOR Right Power Windows Circuit Breaker SPARE Not Used INFO Infotainment Harness Connection
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Fuse Data
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Assignment of the fuses and relay in the Engine Compartment (2003-2005)
Fuse Data
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Short-Code Description GLOW PLUG Diesel Glow Plugs and Intake Air Heater CUST FEED Gasoline Accessory Power STU D #1 Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse. MBEC Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors BLOWER Front Climate Control Fan LBEC Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet?Rear Cargo Area and Instrument Panel STUD 2 Accessory Power/Trailer Wiring Brake Feed ABS Anti-Lock Brakes VSES/ECAS Vehicle Stability IGN A Ignition Power IGN B Ignition Power LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module TRL PARK Parking Lamps Trailer Wiring RR PARK Right Rear Parking and Sidemarker Lamps LR PARK Left Rear Parking and Sidemarker Lamps PARK LP Parking Lamps Relay STARTER Starter Relay INTPARK Interior Lamps STOP LP Stoplamps TBC BATT Truck Body Controller Battery Feed SUNROOF Sunroof SEO B2 Off-Road Lamps 4WS Vent Solenoid Canister/Quadrasteer Module Power RR HVAC Not Used AUX PWR Auxiliary Power Outlet 7 Console IGN 1 Ignition Relay PCM 1 Powertrain Control Module ETC/ECM Electronic Throttle Control, Electronic Brake Controller IGN E Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Staiter Relay RTD Ride Control TRL B/U Backup Lamps Trailer Wiring PCM B Powertrain Control Module, Fuel Pump F/PMP Fuel Pump (Relay) B/U LP Back-up Lamps, Automatic Transmission Shift Lock Control System RR DEFOG Rear Window Defogger HDLP-HI Headlamp High Beam Relay PRIME Not Used 02B Oxygen Sensors SIR Supplemental ln?atable Restraint System FRT PARK Front Parking Lamps, Sidemarker Lamps DRL Daytime Running Lamps (Relay) SEO IGN Rear Defog Relay TBC IGN1 Truck Body Controller Ignition HI HDLP-LT High Beam Headlamp-Left LH HID Not Used DRL Daytime Running Lamps IPC/DIC Instrument Panel Cluster/Driver Information Center HVAC/ECAS Climate Control Controller CIG LTR Cigarette Lighter HI HDLP-RT High Bearn Headlamp-Right HDLP-LOW Headlamp Low Beam Relay A/C COMP Air Conditioning Compressor A/C COMP Air Conditioning Compressor Relay RR WPR Not Used RADIO Audio System SEO B1 Mid Bussed Electrical Center, Rear Heated Seats, HomeLink LO HDLP-LT Headlamp Low Beam-Left BTSI Brake Transmission Shift Interlock System CRANK Starting System LO HDLP-RT Headlamp Low Beam-Right FOG LP Fog Lamp Relay FOG LP Fog Lamps HORN Horn Relay W/S WASH Windshield Washer Pump Relay W/S WASH Windshield Washer Pump INFO OnStar/Rear Seat Entertainment RADIO AMP Radio Ampli?er RH HID Not Used HORN Horn EAP Not Used TREC All-Wheel Drive Module SBA Supplemental Brake Assist RVC Regulated Voltage Control (2005) INJ 2/15A Fuel Injection Rail #2 INJ 1/15A Fuel Injection Rail #1 02A/15A Oxygen Sensors 02B/15A Oxygen Sensors IGN 1 Ignition 1 ECMHPV/15A Engine Control Module FUEL HT/15A Fuel Heater ECMI/15A Engine Control Module
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Fuse Data
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Fuse Data
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Short-Code Description COOL/FAN Cooling Fan COOL/FAN Cooling Fan Relay Fuse COOL/FAN Cooling Fan Fuse
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Fuse Data
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Short-Code Description COOL/FAN 1 Cooling Fan Relay 1 COOL/FAN 3 Cooling Fan Relay 3 COOL/FAN 2 Cooling Fan Relay 2
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Fuse Data
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Assignment of the fuses in the Instrument Panel (2006, 2007)
Fuse Data
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Short-Code Description RR WPR Rear Wiper SEO ACCY Special Equipment Option Accessory WS WPR Windshield Wipers TBC ACCY Truck Body Controller Accessory IGN 3 Ignition, Heated Seats 4WD Four-Wheel Drive System, Auxiliary Battery HTR A/C Climate Control System LOCK (Relay) Power Door Lock Relay (Lock Function) HVAC 1 Climate Control System LT DR Driver’s Door Harness Connection CRUISE Cruise Control, Power Take Off (PTO) UNLCK (Relay) Power Door Lock Relay (Unlock Function) RR FOG LP Not Used BRAKE Anti-Lock Brake System DRIVER UNLCK Power Door Lock Relay (Driver’s Door Unlock Function) IGN 0 TCM TBC IGN 0 Truck Body Controller VEH CHMSL Vehicle and Trailer High Mounted Stoplamp LT TRLR ST/TRN Left Turn Signal/Stop Trailer LT TRN LeftTurn Signals and Sidemarkers VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module RT TRLR ST/TRN Right Turn Signal/Stop Trailer RT TRN RiahtTurn Signals and Sidemarkers BODY Harness Connector DDM Driver Door Module AUX PWR 2, M/GATE Not Used LCKS Power Door Lock System ECC, TPM Tire Pressure Monitoring System TBC 2C Truck Body Controller HAZRD Flasher Module CB LT DRS Left Power Windows Circuit Breaker TBC 2B Truck Body Controller TBC 2A Truck Body Controller
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Fuse Data
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Center instrument panel relay box (2003-2007)
Fuse Data
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Short-Code Description SEO Special Equipment Option TRAILER Trailer Brake Wiring UPFIT Upftter (Not Used) SL RIDE Ride Control Harness Connection HDLR 2 Headliner Wiring Connector BODY Body Wiring Connector DEFOG Rear Defogger Relay HDLNR 1 Headliner Wiring Connector 1 SPARE RELAY Not Used CB SEAT Driver and Passenger Seat Module Circuit Breaker CB RT DOOR Right Power Windows Circuit Breaker SPARE Not Used INFO Infotainment Harness Connection
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Fuse Data
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Assignment of the fuses and relay in the Engine Compartment (2006, 2007)
Fuse Data
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Short-Code Description GLOW PLUG Diesel Glow Plugs and Intake Air Heater CUST FEED Gasoline Accessory Power HYBRID Hybrid STUD #1 Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse. MBEC Mid Bussed Electrical Center Power Feed. Front Seats, Right Doors BLWR Front Climate Control Fan LBEC Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet – Rear Cargo Area and Instrument Panel STUD #2 Accessory Power/Trailer Wiring Brake Feed ABS Anti-lock Brakes VSES/ECAS Vehicle Stability IGN A Ignition Power IGN B Ignition Power LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module TRLPARK Parking Lamps Trailer Wiring RR PARK Right Rear Parking and Sidemarker Lamps LR PARK Left Rear Parking and Sidemarker Lamps PARK LP Parking Lamps Relay STRTR Starter Relay INTPARK Interior Lamps STOP LP Stoplamps TBC BATT Truck Body Controller Battery Feed SEO B2 Off-Road Lamps 4WS Not Used AUX PWR Auxiliary Power Outlet – Console PCM 1 Powertrain Control Module ETC/ECM Electronic Throttle Control, Electronic Brake Controller-Gasoline Engine, Fan Clutch-Diesel Engines IGN E Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay RTD Ride Control TRL B/U Backup Lamps Trailer Wiring F/PMP Fuel Pump (Relay) B/U LP Back-up Lamps, Automatic Transmission Shift Lock Control System RR DEFOG Rear Window Defogger HDLP-HI Headlamp High Beam Relay PRIME Not Used AIRBAG Supplemental ln-atable Restraint System FRT PARK Front Parking Lamps, Sidemarker Lamps DRL Daytime Running Lamps (Relay) SEO IGN Rear Defog Relay TBC IGN1 Truck Body Controller Ignition HI HDLP-LT High Beam Headlamp-Left LH HID Not Used DRL Daytime Running Lamps RVC Regulated Voltage Control IPC/DIC Instrument Panel Cluster/Driver Information Center HVAC/ECAS Climate Control Controller CIG LTR Cigarette Lighter HI HDLP-RT High Beam Headlamp-Right HDLP-LOW Headlamp Low Beam Relay A/C COMP Air Conditioning Compressor Relay A/C COMP Air Conditioning Compressor TCMB Transmission Control Module RR WPR Not Used RADIO Audio System SEO B1 Mid Bussed Electrical Center, Rear Heated Seats, Universal Home Remote System LO HDLP-LT Headlamp Low Beam-Left BTSI Brake Transmission Shift Interlock System CRNK Starting System LO HDLP-RT Headlamp Low Beam-Right FOG LP Fog Lamps Relay FOG LP Fog Lamps HORN Horn Relay W/S WASH Windshield Washer Pump Relay W/S WASH Windshield Washer Pump INFO OnStar/Rear Seat Entertainment RADIO AMP Radio Amplifer RH HID Not Used HORN Horn EAP Not Used TREC Not Used INJ2 Fuel Injection Rail #2 INJ 1 Fuel Injection Rail #1 02A Oxygen Sensors 02B Oxygen Sensors IGN 1 Ignition 1 PCM B Powertrain Control Module B SBA Supplemental Brake Assist ECM Engine Control Module ACTUATOR Actuator FUEL HTR Fuel Heater ECM 1 Engine Control Module 1 ECM Engine Control Module ECM B Engine Control Module B EV FAN Electronic Viscous Fan RR HVAC Rear Climate Control S/ROOF Sunroof
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Fuse Data
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Assignment of the fuses in the auxiliary electric cooling fan fuse panel (2006, 2007)
Fuse Data
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Short-Code Description COOL/FAN Cooling Fan COOL/FAN Cooling Fan Relay Fuse COOL/FAN Cooling Fan Fuse
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Assignment of the relay in the auxiliary electric cooling fan fuse panel (2006, 2007)
Fuse Data
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Short-Code Description COOL/FAN 1 Cooling Fan Relay 1 COOL/FAN 3 Cooling Fan Relay 3 COOL/FAN 2 Cooling Fan Relay 2
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