2004 Silverado Fuse Diagram: Exploring the Fuse Boxes
Find the correct fuse for the circuit you’re working on using this 2004 Silverado Fuse Diagram
The 2004 Silverado has an underhood fuse box located on the driver’s side fender and two instrument panel fuse boxes. The instrument panel fuse block is located on the driver’s side edge of the instrument panel (Remove the cover to access it) and the second fuse box is located in the center of the instrument panel.
To learn more about automotive fuses, see this article
To learn how to check a fuse visually or without removing it, see this article
2004 Silverado Fuse Diagram for Underhood fuse box
How to find your fuse and the devices served by that fuse
There are 69 fuse and relay slots in the Underhood Fuse Box. The table shows only 10 to speed up load time. Here’s how to find the fuse and circuit you want.
1) Change the number of entries showing (in the Show Entries Box) to 100 and scroll the list.
2) Enter the name of the component you’re searching for in the Search box.
3) Use the Next/Previous buttons at the bottom of the table
| Fuse number | Amperage | |
|---|---|---|
| STUD #1 | 40 | Trailer Wiring, Automatic Level Control (ALC) Compressor Relay |
| MBEC | 50 | Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors SEAT CB. RT DOOR CB |
| BLOWER | 40 | Blower Motor |
| LBEC | 50 | Left Bussed Electrical Center, Door Modules LOCKS Fuse. DDM Fuse, PDM Fuse, ECC Fuse, AUX PWR 2 Fuse |
| STUD #2 | 30 | Trailer Wiring |
| ABS | 60 | Electronic Brake Control Module (EBCM) |
| VSES/ECAS | 60 | Electronic Brake Control Module (EBCM) Vehicle Stability |
| IGN A | 40 | Ignition Switch RUN. START. RUN/START/ACCY |
| IGN B | 40 | Ignition Switch RUN/ACC, RUN/START |
| LBEC 1 | 50 | Left Bussed Electrical Center, Door Modules LOCKS Fuse. DDM Fus FLASH Fuse, TBC 2A Fuse. TBC 2B Fuse. TBC 2C Fuse. LT DOORS Fuse |
| TRL PARK | 15 | Trailer Wiring Parking Lamps |
| RR PARK | 10 | Exterior Lamps-Right Rear, Clearance Lamps-Right |
| LR PARK | 10 | Exterior Lamps-Left Rear. Clearance Lamps-Left |
| PARK LP Relay | TRLR PARK Fuse, LR PARK Fuse, RR PARK Fuse, FRT PARK, INT PARK Fuse, DRL Relay (Export) | |
| STARTER Relay | Starter | |
| INTPARK | 10 | Interior Lamps |
| STOP LP | 25 | Stop Lamp Switch |
| TBC BATT | 10 | Body Control Module (BCM). PASS-Key Module |
| SUNROOF | 25 | Sunroof Relay |
| SE) B2 | 30 | Roof Beacon Relay |
| 4WS | 15 | Rear Wheel Steering Control Module, Evaporative Emission (EVAP) Canister Vent Solenoid |
| RR HVAC | 30 | I-IVAC Control Assembly-Rear Auxiliary |
| AUX PWR | 20 | Accessory Power Outlets. Auxiliary Power Outlets |
| IGN 1 Relay | 50 | ETC/ECM Fuse, PCM 1 Fuse, INJ 1 Fuse, INJ 2 Fuse PCM 1 15A Powertrain Control Module (PCM). Mass Air Flow (MFS) Sensor. Evaporative Emission (EVAP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay |
| ETC/ECM | 15 | Throttle Actuator Control (TAC) |
| INJ 1 | 15 | Fuel Injectors-Odd-Numbered. Ignition Coils-Odd-Numbered |
| INJ 2 | 15 | Fuel Injectors-Even-Numbered. Ignition Coils-Even-Numbered |
| IGN E | 10 | AC COMP Relay, Park/Neutral Position (PNP) Switch, Turn Signal/Multifunction Switch, Headlamp Leveling Components RTD 30A Automatic Level Control (ALC) Compressor, Electronic Suspension Control (ESC) Module |
| TRL B/U | Body Control Module (BCM). Trailer Wiring. Back-Up Alarm | |
| PCM B | 20 | Powertrain Control Module (PCM) |
| F/PMP | 15 | Fuel Pump Relay, Heated Oxygen Sensors-before the catalytic converter |
| B/U LP | 20 | Park/Neutral Position (PNP) Switch, Back-up Lamps, Automatic Transmission Shift Lock Control System |
| RR DEFOG | 30 | Rear Window Defogger |
| HDLP-Hl | Headlamp High Beam Relay | |
| 02B | 15 | Heated Oxygen Sensors-after the catalytic converter |
| SIR | 15 | Inflatable Restraint Sensing and Diagnostic Module (SDM), Memory Seat Module-Passenger. Inside Reaview Mirror |
| FRT PARK | 10 | Park/Tum Signal Lamps-Front, Marker Lamps-Front |
| DRL Relay | Daytime Running Lamps (Relay) | |
| SEO ION | 10 | DEFOG Relay. Instrument Panel Cluster (IPC). Rear Object Sensor Control Module |
| TBC IGN 1 | 10 | Truck Body Controller Ignition |
| HI HDLP-LT | 10 | Headlamp-High Beam-Left |
| LH HID | 20 | Headlamp Ballast-Left |
| DRL | 10 | DRL Relay (Domestic), Daytime Running Lamps (Export) |
| IPC/DIC | 10 | Instrument Panel Cluster (IPC) |
| HVAC/ECAS | 10 | Cigar Lighter, Data Link Connector (DLC) |
| HI HDLP-RT | 10 | Headlamp-High Beam-Right |
| HDLP-LOW Relay | Headlamp Low Beam Relay | |
| AC COMP Relay | AC Compressor Clutch Assembly | |
| AC COMP | 10 | AC COMP Relay |
| RR WPR | 25 | Window wiper Module-Rear |
| RADIO | 15 | Entertainment System Components |
| SEO B1 | 15 | Instrument Panel Cluster (IPC), Rear Fog Lamp Relay. Overhead Console, Roof Beacon Switch |
| LO HOLP-LT | 10 | Headlamp-Low Beam-Left, Headlamp Ballast-Left |
| BTSI | 10 | Stop Lamp Switch, Brake Transmission Shift Interlock System |
| CRANK | 10 | Starting system, Powertrain Control Module (PCM) |
| LO HDLP-RT | 10 | Headlamp-Low Beam-Right. Headlamp Ballast-Right |
| FOG LP | FOG Lamp Relay | |
| FOG LP | 15 | Fog Lamps |
| HORN | HORN Relay | |
| W/S WASH | Windshield Washer Pump Relay | |
| W/S WASH | 15 | Windshield Washer Pump |
| INFO | 15 | Vehicle Communication Interface Module (VCIM). Rear Seat Entertainment (RSE) Assembly. Remote Playback Device-CD Player |
| RADIO AMP | 30 | Audio Amplifier |
| RH HID | 20 | Headlamp Ballast-Right |
| HORN | 15 | Horn |
| EAP | 15 | Electronic Adjustable Pedals (EAP) Relay |
| TREC | 30 | Transfer Case Encoder Motor, Transfer Case Shift Control Module |
| SBA | 15 | Supplemental Brake Assist Pump Motor |
2004 Silverado Fuse Diagram for the instrument panel fuse box
The underhood fuse block in the engine compartment
on the driver’s side of the vehicle near the battery.
Lift the cover for access to the fuse/relay block.
To remove fuses hold the end of the fuse between your
thumb and index finger and pull straight out.
| Fuse name | amperage | Circuits protected |
|---|---|---|
| RR Wiper | 15 | Rear Wiper/Washer Switch |
| SEO ACCY | 10 | Upfitter Provisions |
| WS WPR | 25 | Windshield Wiper Motor Module |
| TBC ACCY | 10 | Body Control Module (BCM) |
| IGN 3 | 10 | HVAC Components, Electronic Suspension Control (ESC) Components, Heated Seat Modules-Rear, Rear Wheel Steering |
| 4WD | 15 | Front Axle Actuator, Transfer Case Shift Control Switch |
| HTR A/C | 30 | HVAC Control Module |
| LOCK | 20 | Door Lock/Unlock Relays |
| HVAC 1 | 10 | HVAC Control Module, HVAC Actuators |
| CRUISE | 10 | Cruise Control Switch, Steering Wheel Speed/Position Sensor |
| UNLOCK | UNLOCK Relay Door Lock Actuator Liftgate, Door Latch Assembly LR/RR RR FOG LP Relay Rear Fog Lamps (Export) | |
| BRAKE | 10 | Stop Lamp Switch, Electronic Brake Control Module (EBCM), Traction Control Switch |
| DRIVER UNLOCK | Power Door Lock Relay (Driver’s Door Unlock Function) | |
| IGN 0 | 10 | Passlock Sensor, Automatic Transmission, Powertrain Control |
| TBC IGN 0 | 10 | Body Control Module (BCM) |
| VEH STOP | 15 | Tail/Stop and Turn Signal Lamps-Rear, Throttle Actuator Control |
| LT TRLR ST/TRN | 10 | Left Turn Signal/Stop Trailer |
| LT TRN | 10 | Turn Signal Lamps-Left, Marker Lamps-Left, Driver Door Module (DDM), Instrument Panel Cluster (IPC) |
| RT TRLR ST/TRN | 10 | Right Turn Signal/Stop Trailer |
| RT TRN | 10 | Turn Signal Lamps-Right, Marker Lamps-Right, Front Passenger Door Module (FPDM), Instrument Panel Cluster (IPC) |
| VEH CHMSL | 10 | Center High Mounted Stop Lamp (CHMSL) |
| BODY | 12 - WAY BROWN Fuse Block Left I/P C3 (Body Harness) | |
| DDM | 15 | Driver Door Module (DDM) |
| AUX PWR 2 | 20 | Accessory Power Outlet-D-Pillar |
| LOCKS | 20 | Door Lock/Unlock Relays |
| ECC | 10 | HVAC Control Assembly-Rear Auxiliary |
| TBC 2C | 15 | Truck Body Controller |
| FLASH | 25 | Turn Signal/Hazard Flasher Module |
| CB LT DOORS | 25 | Left Power Windows Circuit Breaker, Window Switch LR, Driver Door Module (DDM) |
| TBC 2B | 15 | Body Control Module (BCM) |
| TBC 2C | 15 | Body Control Module (BCM) |
2004 Silverado Center Instrument Panel Fuse Box
The center instrument panel utility block is located
underneath the instrument panel, to the left of the
steering column.
| Fuse name | Circuits protected |
|---|---|
| SEO | Special Equipment Option |
| TRAILER | Trailer Brake Wiring |
| UPFIT | Upfitter (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 |
