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Chevrolet Suburban (2004) Fuse Box Diagram

avatar Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Chevrolet, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production: 2004

Instrument panel fuse block

The fuse block access door is on the driver’s side edge of the instrument panel.

Chevrolet Suburban - fuse box - instrument panel

Fuses Usage
RR Wiper Rear Window Wiper Switch
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 Power Door Lock Relay (Lock Function)
HVAC 1 Inside Rearview Mirror, Climate Control System
L DOOR Driver’s Door Harness Connection
UNLOCK Power Door Lock Relay (Unlock Function)
RR FOG LP Rear Fog Lamp (Export Only)
BRAKE Anti-Lock Brake System
DRIVER UNLOCK Power Door Lock Relay (Drive’s Door Unlock Function)
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 Harmess Connector
DDM Driver Door Module
AUX PWR 2 Rear Cargo Area Power Outlet
LOCKS Power Door Lock System
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORS Left Power Window Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller

Center Instrument Panel Utility Block

The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.

Chevrolet Suburban - fuse box - center instrument panel

Device Usage
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
HDLNR 1 Headliner Wiring Connector 1
CB SEAT Driver and Passenger Seat Module Circuit Breaker
CB RT DOOR Right Power Window Circuit Breaker
SPARE Not Used
INFO Infotainment Harness Connection

Underhood Electrical Center

The underhood electrical center is located on the driver’s side of the engine compartment near the battery.

Chevrolet Suburban - fuse box - engine compartment

*1 –  Gasoline Engine and Fuel Injection Rail #2

*2 –  Gasoline Engine and Fuel Injection Rail #1

*3 –  Gasoline Engine; Oxygen Sensor

*4 –  Gasoline Engine; Oxygen Sensor

*5 –  PCM Ignition

Fuses Usage
CUST FEED Gasoline Accessow Power
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
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 lqnition Power
IGN B lqnition Power
LBEC 1 Left Bussed Electrical Center, Left Door, 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
SEO B2 Off-Road Lamps
4WS Vent Solenoid Canister/QUADRASTEER Module Power
RR HVAC Rear Climate Control
AUX HVAC Auxiliary Power Outlet – 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, Starter 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 Hiqh Beam Relay
PRIME Not Used
SIR Supplemental Inflatable 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 CIuster/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
A/C COMP Air conditioning Compressor Relay
RR WPR Rear Wiper/Washer
RADIO Audio System
SEO B1 Mid Bussed Electrical Center, HomeLink, Rear Heated Seats
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 Lamp
HORN Horn Fuse
HORN Horn Relay
W/S WASH Windshield and Rear Window Washer Pump Relay
W/S WASH Windshield and Rear Window Washer Pump
INFO OnStar/Rear Seat Entertainment
RADIO AMP Radio Amplifier
RH HID Not Used
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist


 WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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