The Chevrolet Tahoe and Suburban, built on the GMT800 platform from 2000 to 2006, are iconic full-size SUVs that have earned a reputation for durability, comfort, and versatility. Designed to handle everything from daily commuting to off-road adventures and heavy-duty towing, these vehicles are equipped with robust electrical systems to support their wide array of features. Central to this system are the fuse boxes and relays, which play crucial roles in maintaining the vehicle’s electrical integrity.
The fuse box in the Chevrolet Tahoe and Suburban (2000-2006) is essential for protecting the vehicle’s electrical circuits. These circuits control vital systems, including engine management, lighting, climate control, power accessories, and the vehicle’s infotainment system. Typically, these vehicles are equipped with two primary fuse boxes: one located in the engine compartment and the other in the cabin, usually on the driver’s side, under the dashboard. The engine compartment fuse box primarily handles high-power components, such as those related to the engine and transmission, while the interior fuse box manages lower-power, comfort-oriented features.
Each fuse within these boxes is designed to blow or break the circuit in the event of an electrical overload or short circuit. This protective mechanism prevents damage to the vehicle’s electrical systems, mitigating the risk of electrical fires and costly repairs. For example, if a system like the headlights or power windows suddenly stops functioning, the first step in troubleshooting is typically to check the associated fuse for that circuit.
Relays in the Tahoe and Suburban are electrically operated switches that control the power supply to high-current systems such as the starter motor, fuel pump, and cooling fans. These relays are critical because they allow high-current systems to be operated by lower-power circuits, ensuring that the vehicle’s wiring and switches are not overloaded. A failed relay can result in significant operational issues, such as the engine not starting if the starter relay is faulty, or engine overheating if the cooling fan relay fails.
Maintaining the fuse boxes and relays in good condition is essential for the overall reliability of these vehicles. Regular inspection can help prevent electrical issues, ensuring that the Tahoe and Suburban remain dependable for both daily use and long journeys. Addressing a blown fuse or a faulty relay promptly can prevent more significant problems down the road and contribute to the longevity of the vehicle.
Understanding the roles of the fuse boxes and relays helps owners keep their Chevrolet Tahoe and Suburban in top working condition, ensuring that all electrical systems function properly and safely. This maintenance is key to preserving the vehicle’s performance and reliability over time.
MUST READ: DYI – How to Check Car Fuses?
(2000-2006) Chevrolet Tahoe & Suburban (GMT800) fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Tahoe & Suburban (GMT800) 2000-2006 fuse assignment
- Cigar lighter (power outlet) fuses in the Chevrolet Suburban (Tahoe) are located in the Engine Compartment Fuse Box and since 2003 also in the Instrument Panel Fuse Box.
- 2000-2002 – see fuses “AUX PWR” and “CIGAR” in the Engine Compartment Fuse Box.
- 2003-2006 – see fuses “AUX HVAC” (Auxiliary Power Outlet – Console), “CIG LTR” (Cigarette Lighter) in the Engine Compartment Fuse Box, and fuse “AUX PWR 2” / “AUX PWR 2, M/GATE” (Rear Cargo Area Power Outlet) in the Instrument Panel Fuse Box.
Year of production: from 2000, 2001, 2002, 2003, 2004, 2005, 2006
Instrument Panel
The fuse box is located on the driver’s side of the instrument panel, behind the cover.
Center instrument panel relay box
The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.
Engine Compartment
Auxiliary Electric Cooling Fan Fuse Block (if equipped)
It is located in the engine compartment on the driver’s side of the vehicle next to the underhood fuse box.
Fuse box diagrams
2000, 2001, 2002
Instrument Panel
Assignment of the fuses in the Instrument Panel (2000-2002)
| Name | Circuit protected |
|---|---|
| L BODY | Retained Accessory Power Relay |
| LOCK | Power Door Locks |
| DRV UNLOCK | Power Door Lock Relay |
| LOCK | Power Door Lock Relay |
| HVAC 1 | Climate Control System |
| CRUISE | Cruise Control, Instrument Cluster |
| IGN 3 | Ignition, Power Seats |
| 4WD | Four-Wheel Drive System, Auxiliary Battery |
| CRANK | Starting System |
| INT PRK | Parking Lamps, Sidemarker Lamps, Interior Lamps |
| L DOOR | Power Door Lock Relay |
| BRAKE | Anti-Lock Brake System |
| RR WIPER | Rear Window Wiper |
| ILLUM | Interior Lamps |
| SEAT | Power Seat Circuit Breaker |
| TURN | Exterior Lamps, Turn Signals, Hazard Lamps |
| UNLOCK | Power Door Locks |
| HTR A/C | Climate Control System |
| WS WPR | Windshield Wipers |
| IGN 1 | Ignition, Instrument Panel |
| AIR BAG | Air Bag |
| MIR/LOCK | Power Mirrors, Power Door Locks |
| DR LOCK | Power Door Locks |
| PWR WDO | Power Window Circuit Breaker |
| UNLOCK | Power Door Lock Relay |
| IGN 0 | PRND321 Display, Odometer, VCM/PCM |
| SEO IGN | Special Equipment Option, Ignition |
| SEO ACCY | Special Equipment Option Accessory, Cellular Telephone |
| RAP#1 | Retained Accessory Power Relay |
| RDO 1 | Audio System |
| RAP #2 | Rear Power Windows, Sunroof, Radio |
Center instrument panel relay box
Center instrument panel relay box (2000-2002)
| Relay Name | Circuit protected |
|---|---|
| SEO | Special Equipment Option |
| HTD ST | Heated Seats |
| HDLNR | Headliner (2001-2002) |
| VANITY | Headliner Wiring |
| TRAILER | Trailer Brake Wiring |
| PWR ST | Power Seats |
| Y9 | Not Used |
| UPF | Upfitter |
| PARK LAMP | Parking Lamps |
| FRT PRK EXPT | Not Used |
| SPARE 2 | Not Used |
| PUDDLE LP | Not Used / Puddle Lamps (2002) |
| SL RIDE | Not Used |
| SPARE 3 | Not Used |
| INADAV PWR | Interior Lights Feed |
| CTSY LP | Courtesy Lamps |
| CEL PHONE | Cellular Telephone Wiring |
Engine Compartment
Assignment of the fuses and relay in the Engine Compartment (2000-2002)
| Name | Circuit protected |
|---|---|
| STUD #1 | Accessory Power/Trailer Wiring Feed/Load Leveling |
| 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 | Retained Accessory Power/Rear Power Windows, Sunroof, Radio |
| STUD #2 | Accessory Power/Trailer Wiring Brake Feed |
| TRL R TRN | Right Turn Signal Trailer Wiring |
| TRL L TRN | Left Turn Signal Trailer Wiring |
| IGN 1 | Ignition, Fuel Controls |
| INJ B | Ignition, Fuel Controls (Relay) |
| STARTER | Starter (Relay) |
| PARK LP | Parking Lamps |
| FRT HVAC | Climate Control System |
| STOP LP | Exterior Lamps, Stoplamps |
| ECM 1 | PCM |
| CHMSL | Center High Mounted Stoplamp |
| VEH STOP | Stoplamps, Cruise Control |
| TRL B/U | Backup Lamps Trailer Wiring |
| INJ A | Fuel Controls, Ignition |
| RR HVAC | Rear HVAC |
| 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) |
| RTD | Autoride (Real Time Damping) |
| RR PRK | Right Rear Parking Lamps |
| ECM B | PCM |
| F/PMP | Fuel Pump (Relay) |
| O2 A | Oxygen Sensors |
| O2 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 |
| PRIME | Not Used |
| 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 | Radio Amplifier |
| HAZ LP | Exterior Lamps, Hazard Lamps |
| EXP LPS | Not Used |
| HORN | Horn |
| CTSY LP | Interior Lamps |
| RR WPR | Rear Wipers |
| TBC | Body Control Module, Remote Keyless Entry, Headlamps |
2003, 2004, 2005
Instrument Panel
Assignment of the fuses in the Instrument Panel (2003-2005)
| Name | 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 |
| CRUISE | CRUISE Control |
| 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) |
| IGN 0 | PCM, 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 | 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 relay box
Center instrument panel relay box (2003-2006)
| 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 |
| SPARE RELAY | Not Used |
| CB SEAT | Driver and Passenger Seat Module Circuit Breaker |
| CB RT DOOR | Right Power Window Circuit Breaker |
| SPARE | Not Used |
| INFO | Infotainment Harness Connection |
Engine Compartment
Assignment of the fuses and relay in the Engine Compartment (2003-2005)
| Name | Usage |
|---|---|
| GLOW PLUG | Not Used |
| 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 |
| 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 | Iqnition Power |
| IGN B | Iqnition 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 |
| SUNROOF | Sunroof |
| 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 High Beam Relay |
| PRIME | Not Used |
| AIRBAG | 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 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 |
| 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 |
| 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 |
| ECMRPV/15A | Engine Control Module |
| FUEL HT/15A | Fuel Heater |
| ECM I/15A | Engine Control Module |
Auxiliary Electric Cooling Fan Fuse Block
| Fuses | Usage |
|---|---|
| COOL/FAN | Cooling Fan |
| COOL/FAN | Cooling Fan Relay Fuse |
| COOL/FAN | Cooling Fan Fuse |
| Relays | |
| COOL/FAN 1 | Cooling Fan Relay 1 |
| COOL/FAN 2 | Cooling Fan Relay 3 |
| COOL/FAN 3 | Cooling Fan Relay 2 |
2006
Instrument Panel
Assignment of the fuses in the Instrument Panel (2006)
| Name | Usage |
|---|---|
| RR WPR | 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 |
| LCK | Power Door Lock Relay (Lock Function) |
| HVAC 1 | Inside Rearview Mirror, Climate Control System |
| L DR | Driver’s Door Harness Connection |
| CRUISE | CRUISE Control |
| UNLOCK | Power Door Lock Relay (Unlock Function) |
| RR FOG LP | Rear Fog Lamp (Export Only) |
| BRAKE | Anti-Lock Brake System |
| DRIVER UNLCK | Power Door Lock Relay (Drive’s Door Unlock Function) |
| IGN 0 | PCM, 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 | Harmess Connector |
| DDM | Driver Door Module |
| AUX PWR 2, M/GATE | Rear Cargo Area Power Outlet |
| LCKS | Power Door Lock System |
| TBC 2C | Truck Body Controller |
| HAZARD | Flasher Module |
| CB LT DOORS | Left Power Window Circuit Breaker |
| TBC 2B | Truck Body Controller |
| TBC 2A | Truck Body Controller |
Center instrument panel relay box
Center instrument panel relay box (2003-2006)
| 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 |
| SPARE RELAY | Not Used |
| CB SEAT | Driver and Passenger Seat Module Circuit Breaker |
| CB RT DOOR | Right Power Window Circuit Breaker |
| SPARE | Not Used |
| INFO | Infotainment Harness Connection |
Engine Compartment
Assignment of the fuses and relay in the Engine Compartment (2006)
| Name | Usage |
|---|---|
| GLOW PLUG | Not Used |
| 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 |
| BLWER | 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 | Iqnition Power |
| IGN B | Iqnition 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 |
| 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 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 | Electronic Suspension Control, Automatic Level Control (ALC) Exhaust |
| 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 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 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 |
| A/C COMP | Air conditioning Compressor Relay |
| TCMB | Transmission Control Module |
| 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 |
| CRNK | Starting System |
| LO HDLP-RT | Passenger’s Side Headlamp Low Beam |
| FOG LP | Fog lamp Relay |
| FOG LP | Fog Lamps |
| 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 |
| 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, Fuel Pump |
| 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 |
| RR HVAC | Rear Climate Control |
| S/ROOF | Sunroof |
Auxiliary Electric Cooling Fan Fuse Block
| Fuses | Usage |
|---|---|
| COOL/FAN | Cooling Fan |
| COOL/FAN | Cooling Fan Relay Fuse |
| COOL/FAN | Cooling Fan Fuse |
| Relays | |
| COOL/FAN 1 | Cooling Fan Relay 1 |
| COOL/FAN 2 | Cooling Fan Relay 3 |
| COOL/FAN 3 | Cooling Fan Relay 2 |
Conclusion
For owners and enthusiasts of classic Chevrolet Tahoe & Suburban (GMT800) 2000-2006, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Chevrolet’s craftsmanship and innovation in the automotive industry during that era.
