The Chevrolet Impala (2000-2005) is a full-size sedan known for its practicality and reliable performance. Its electrical system plays a crucial role in supporting various functions, with the fuse box and relays ensuring proper management of electrical components.
The fuse box in the Chevrolet Impala is located in two primary locations: the engine compartment and the interior, typically on the passenger side under the dashboard. The engine compartment fuse box controls high-power circuits, such as those for the engine, headlights, and cooling fans. The interior fuse box manages lower-power systems like the radio, power windows, and interior lighting. Each fuse protects its respective circuit from overloads or short circuits by breaking the connection if an issue arises.
Relays in the Impala act as switches for high-current systems like the starter motor, fuel pump, and cooling fan. These relays allow the car to operate high-power systems efficiently through low-current signals. Regular inspection of fuses and relays is important to ensure all electrical systems, from the engine to the comfort features, work smoothly. Proper maintenance helps prevent electrical issues and keeps the Impala operating reliably.
MUST READ: DYI – How to Check Car Fuses?
(2000-2005) Chevrolet Impala 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 Impala (2000-2005) fuse assignment
- Cigar lighter (power outlet) fuses in the Chevrolet Impala are located in the Driver’s Side Instrument panel fuse box (see fuse “CIG/AUX”) and in the Passenger’s Side Instrument panel fuse box (see fuses “AUX PWR” (Auxiliary Power Outlet) and “C/LTR” (Cigarette Lighter)).
Year of production: from 2000, 2001, 2002, 2003, 2004, 2005
Instrument Panel Fuse Box №1 (Driver’s Side)
Fuse Box Location
It is located on the driver’s side of the instrument panel, behind the cover.
Fuse box diagram
Assignment of the fuses and relay in the Instrument Panel Fuse Box №1
| Name | Description |
|---|---|
| PCM/BCM/CLSTR | Powertrain Control Module, Body Control Module, Cluster (Ignition 0) |
| WSW | Windshield Wipers, Windshield Washer |
| PCM (CRANK) | Powertrain Control Module (Crank) |
| CIG/AUX | Accommodated Device (Accessory) |
| BCM | Body Control Module (Accessory) |
| SRS | Supplemental Restraint System |
| ABS/PCM | Anti-Lock Brake System, Powertrain Control Module, Brake Switch, Crank Relay, Canister Vent Solenoid (Run, Crank) |
| STOP | Brake Lamps, Body Control Module (Run, Crank) |
| TURN SIGNAL | Turn Signal Flashers |
| CRUISE | Cruise Control Steering Column Controls |
| A/C CRUISE | HVAC Temp Door Motors & Module, Cruise Control Module |
| A/C FAN | HVAC Blower |
| STR COL | Steering Wheel Lighting |
| DR LK | Body Control Module, Door Lock Controls |
| PWR MIR | Power Mirrors |
| CLSTR/BCM | Cluster, Body Control Module, Data Link Connector (Battery) |
| LH HTD ST/BCM | Driver’s Heated Seat, Body Control Module, Battery Controlled Loads |
| Relays | |
| RETAINED ACCESSORY PWR RELAY | Retained Accessory Power Relay |
| HEADLAMP RELAY | Headlamp Relay |
| RETAINED ACCESSORY PWR BRKR | Power Window, Sunroof Breaker |
Instrument Panel Fuse Box №2 (Passenger’s Side)
Fuse box location
It is located on the passenger’s side of the instrument panel, behind the cover.
Fuse box diagram
Assignment of the fuses and relay in the Instrument Panel Fuse Box №2
| Name | Description |
|---|---|
| RH HTD ST | Passenger Heated Seat |
| PWR DROP | Accommodated Device |
| B/U LP | Back-Up Lamps |
| DIC/RKE | Driver Information Center, Remote Keyless Entry, HVAC |
| TRK/ROOF BRP | Trunk Lamps, Headliner Lamps |
| HVAC BLO | HVAC Blower Relay |
| I/P BRP | Instrument Panel Footwell Lamps, Glovebox Lamps |
| HTD MIR | Heated Mirrors |
| BRK SW | Brake Switch |
| HAZ SW | Hazard Switch |
| FRT PRK LP | Front Parking Lamps |
| AUX PWR | Auxiliary Power Outlet (Battery) |
| C/LTR | Cigarette Lighter |
| RADIO | Radio, Radio Amplifier |
| REAR PARK LP | Rear Parking Lamps, Instrumentation Lighting |
| Circuit Breakers | |
| POWER SEATS BRKR | Power Seat Circuit Breaker |
| REAR DEFOG BRKR | Rear Defog Breaker |
| Relays | |
| PARK LP RELAY | Parking Lamp Relay |
| BACKUP LP RELAY | Back-up Lamps Relay |
| BATT RUN DOWN PROTECTION RELAY | Battery Run Down Protection Relay |
| REAR DEFOG RELAY | Rear Defog Relay, Heated Mirror Relay |
Engine Compartment Fuse Boxes
Fuse box location
There are two fuse blocks that are located in the engine compartment, on the passenger’s side.
Fuse box diagram (№1)
Assignment of the fuses and relay in the Engine Compartment Fuse Box №1
| Name | Description |
|---|---|
| HORN RLY | Horn Relay |
| FOG RLY | Fog Lamp Relay |
| F/PMP RLY | Fuel Pump Relay |
| DRL/EXIT LTS | Low (Left Front) & High (Left Front) Headlamps |
| EXT LTS | Low (Right Front) & High (Right Front) Headlamps |
| PCM | PCM Battery |
| A/C RLY (CMPR) | HVAC Compressor Relay & Generator |
| Maxi Fuses | |
| LEFT I/P | Left Bussed Electrical Center (Battery) |
| RT I/P #1 | Right Bussed Electrical Center (Battery) |
| RT I/P #2 | Right Bussed Electrical Center (Battery) |
| Relays | |
| FUEL PUMP | Fuel Pump |
| DRL RELAY | Daytime Running Lamps |
| A.I.R. RELAY | Air Induction Reaction Relay |
| CRANK RLY | Starter (Crank) Relay |
| HORNS | Horn |
| FOG LTS | Fog Lamps |
Fuse box diagram (№2)
Assignment of the fuses and relay in the Engine Compartment Box №2
| Name | Description |
|---|---|
| FAN CONT #2 & #3 | Cooling Fan Control Relays #2 & #3 |
| FAN CONT #1 | Cooling Fan Control Relays #1 |
| AIR PMP RLY | Air Induction Reaction Pump Relay (Battery) |
| FUEL INJ | Fuel Injectors |
| TRANS SOL | Transmission Solenoids |
| A/C RLY (COIL) | HVAC Control Relay |
| ENG DEVICES | Canister Purge Solenoid, Mass Air Flow Sensor (MAF), AIR Pump Relay & Valve Control |
| DFI MDL | Direct Fire Ignition Module |
| OXY SEN | Oxygen Sensors (Pre and Post Converter) |
| Maxi Fuses | |
| IGN SW | Ignition Switch |
| BLANK | Blank |
| U/HOOD #2 | Ignition Relay, AIR Pump |
| COOLING FANS | Cooling Fans (Battery) |
| Relays | |
| FAN CONT #3 | Secondary Cooling Fan (Passenger’s Side) |
| FAN CONT #2 | Cooling Fan Control Relay |
| FAN CONT #1 | Primary Cooling Fan (Driver’s Side) |
| IGN RELAY | Ignition Relay |
| A/C CMPR | HVAC Compressor |
Conclusion
For owners and enthusiasts of classic Chevrolet Impala (2000-2005), 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.
