Page Contents:
In this article, you will find information about the fuses of the Buick Regal (models 2000, 2002, 2003, and 2004), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Buick Regal
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses, circuit breakers and in the fuse block wiring itself. This greatly reduces the chance of fires caused by electrical problems.
Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Make sure a bad fuse is replaced with a new one of the identical size and rating.
Caution!
- Data on the replacement fuse must match the data on the defective fuse.
- Before replacing a fuse, turn every vehicle electrical switch off.
Location of Fuse Boxes
Instrument Panel Fuse Block:
Some fuses are located in a fuse block on the passenger’s side of the instrument panel. Pull off the cover labeled FUSES to expose the fuse block.
Underhood Fuse Block:
Some fuses and relays are located in the underhood fuse block on the passenger’s side of the vehicle in the engine compartment.
Fuse Box Diagrams
2000
Instrument Panel Fuse Block
| Name | Description |
|---|---|
| TIRE RESET | Tire Inflation Monitor Reset Button |
| PWR WINDOWS, PWR SUNROOF | Power Windows, Power Sunroof |
| REAR DEFOG | Rear Window Defogger |
| POWER SEATS | Power Seats |
| Blank | Not Used |
| PARK LOCK | Ignition Key Solenoid |
| Blank | Not Used |
| Blank | Not Used |
| PCM, BCM, U/H RELAY | Ignition Signal: Hot in Run and Start, Powertrain Control Module, Body Control Module, Underhood Relay |
| RADIO PREM. SOUND | Remote Radio Premium Sound |
| POWER MIRRORS | Power Mirrors |
| Blank | Not Used |
| PANEL DIMMING | Panel Dimming |
| Blank | Not Used |
| IGN 0, CLUSTER, PCM, BCM | Ignition Signal: Hot in Run, Unlock and Start, Cluster, Powertrain Control Module, Body Control Module |
| Blank | Not Used |
| Blank | Not Used |
| DRL | Daytime Running Lamps Module |
| INADV POWER BUS | Interior Lamps, Retained Accessory Power |
| DOOR LOCKS | Door Locks |
| Blank | Not Used |
| TAIL LAMPS, LIC LAMPS | Taillamps, License Lamps |
| RADIO | Radio |
| HEATED MIRROR | Heated Mirrors |
| CRUISE | Cruise Control |
| Blank | Not Used |
| CLUSTER | Instrument Panel Cluster |
| CIGAR LTR, DATA LINK | Cigarette Lighter, Auxiliary Power Connection (Power Drop), Data Link |
| STOP LAMPS | Stoplamps |
| Blank | Not Used |
| FRT PARK LPS | Parking Lamps |
| POWER DROP | Auxiliary Power Connection (Power Drop): Hot in ACC and Run |
| CRANK SIGNAL, BCM, CLUSTER | Crank Signal, Body Control Module, Cluster, Powertrain Control Module |
| HVAC | Ignition Signal, HVAC Control Head |
| BTSI PARK LOCK | Shifter Lock Solenoid |
| AIR BAG | Air Bag |
| BCM PWR | Body Control Module |
| HAZARD | Hazard Flashers |
| LH HEATED SEAT | Driver’s Heated Seat |
| Blank | Not Used |
| BCM ACC | Ignition Signal: Hot in ACC and Run, Body Control Module |
| Blank | Not Used |
| LOW BLOWER | Low Blower |
| ABS | Anti-Lock Brakes |
| TURN SIGNALS, CORN LPS | Turn Signals, Cornering Lamps |
| RADIO, HVAC, RFA, CLUSTER | Radio, HVAC Head, Remote Keyless Entry, Cluster |
| HIGH BLOWER | High Blower |
| RH HEATED SEAT | Passenger’s Heated Seat |
| STRG WHL CONT | Audio Steering Wheel Controls |
| WIPER | Wipers |
Underhood Fuse Block
| № | Description |
|---|---|
| 1 | ABS |
| 2 | Starter Solenoid |
| 3 | Power Seats, Rear Defog, Heated Seats |
| 4 | High Blower, Hazard Flasher, Stoplamps, Power Mirror, Door Locks |
| 5 | Ignition Switch, BTSI, Stoplamps, ABS, Turn Signals, Cluster, Air Bag, DRL Module |
| 6 | Cooling Fan |
| 7 | Interior Lamps, Retained Accessory Power, Keyless Entry, CEL TEL, Data Link, HVAC Head, Cluster, Radio, AUX Power (Power Drop), Cigarette Lighter |
| 8 | Ignition Switch, Wipers, Radio, Steering Wheel Controls, Body Control Module, AUX Power (Power Drop), Power Windows, Sunroof, HVAC Controls, DRL, Rear Defog Relay |
| 9 | Cooling Fan 2 |
| 10 | Cooling Fan 3 |
| 11 | Starter Solenoid |
| 12 | Cooling Fan 1 |
| 13 | Ignition Main |
| 14 | Air Pump (Optional) |
| 15 | A/C Clutch |
| 16 | Horn |
| 17 | Fog Lamps |
| 18 | Fuel Pump, Speed Control (L67 only) |
| 19 | Fuel Pump |
| 20 | Air Pump (Optional) |
| 21 | Generator |
| 22 | ECM |
| 23 | A/C Compressor Clutch |
| 24 | Cooling Fan |
| 25 | Electronic Ignition |
| 26 | Transaxle |
| 27 | Horn |
| 28 | Fuel Injector |
| 29 | Oxygen Sensor |
| 30 | Engine Emissions |
| 31 | Fog Lamps |
| 32 | Headlamp (Right) |
| 33 | Rear Compartment Release |
| 34 | Parking Lamps |
| 35 | Fuel Pump |
| 36 | Headlamp (Left) |
| 37 | Spare |
| 38 | Spare |
| 39 | Spare |
| 40 | Spare |
| 41 | Spare |
| 42 | Spare |
| 43 | Fuse Puller |
| SYMBOL | A/C Compressor Clutch Diode |
2002
Instrument Panel Fuse Block
| Name | Usage |
|---|---|
| TIRE RESET | Tire Inflation Monitor Reset Button |
| PWR WINDOWS, PWR SUNROOF | Power Windows, Power Sunroof |
| REAR DEFOG | Rear Window Defogger |
| POWER SEATS | Power Seats |
| Blank | Not Used |
| PARK LOCK | Ignition Key Solenoid |
| Blank | Not Used |
| Blank | Not Used |
| PCM, BCM, U/H RELAY | Ignition Signal: Hot in Run and Start, Powertrain Control Module, Body Control Module, Underhood Relay |
| RADIO PREM. SOUND | Remote Radio Premium Sound |
| POWER MIRRORS | Power Mirrors |
| Blank | Not Used |
| PANEL DIMMING | Panel Dimming |
| Blank | Not Used |
| IGN 0, CLUSTER, PCM, BCM | Ignition Signal: Hot in Run, Unlock and Start, Cluster, Powertrain Control Module, Body Control Module |
| Blank | Not Used |
| Blank | Not Used |
| Blank | Not Used |
| INADV POWER BUS | Interior Lamps |
| DOOR LOCKS | Door Locks |
| TRAP ALERT | Trap Alert |
| TAIL LAMPS, LIC LAMPS | Taillamps, License Lamps |
| RADIO | Radio |
| HEATED MIRROR | Heated Mirrors |
| CRUISE | Cruise Control |
| Blank | Not Used |
| CLUSTER | Instrument Panel Cluster |
| CIGAR LTR | Cigarette Lighter, Auxiliary Power Connection (Power Drop) |
| STOP LAMPS | Stoplamps |
| ONSTAR | OnStar |
| FRT PARK LPS | Parking Lamps |
| POWER DROP | Auxiliary Power Connection (Power Drop): Hot in ACC and Run |
| CRANK SIGNAL, BCM, CLUSTER | Crank Signal, Body Control Module, Cluster, Powertrain Control Module |
| HVAC | Ignition Signal, Heating Ventilation Air Conditioning Control Head |
| BTSI PARK LOCK | Shifter Lock Solenoid |
| AIR BAG | Air Bag |
| BCM PWR | Body Control Module |
| HAZARD | Hazard Flashers |
| LH HEATED SEAT | Driver’s Heated Seat |
| Blank | Not Used |
| BCM ACC | Ignition Signal: Hot in ACC and Run, Body Control Module |
| Blank | Not Used |
| LOW BLOWER | Low Blower |
| ABS | Anti-Lock Brakes |
| TURN SIGNALS, CORN LPS | Turn Signals, Cornering Lamps |
| RADIO, HVAC, RFA, CLUSTER | Radio, Heating Ventilation Air Conditioning Head, Remote Keyless Entry, Cluster |
| HIGH BLOWER | High Blower |
| RH HEATED SEAT | Passenger’s Heated Seat |
| STRG WHL CONT | Audio Steering Wheel Controls |
| WIPER | Wipers |
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Anti-Lock Brake System |
| 2 | Starter Solenoid |
| 3 | Power Seats, Rear Defog, Heated Seats |
| 4 | High Blower, Hazard Flasher, Stoplamps, Power Mirror, Door Locks |
| 5 | Ignition Switch, BTSI, Stoplamps, ABS, Turn Signals, Cluster, Air Bag, DRL Module |
| 6 | Cooling Fan |
| 7 | Retained Accessory Power, Keyless Entry, Data Link, Heating Ventilation Air Conditioning Head, Cluster, Radio, Auxiliary Power (Power Drop), Cigarette Lighter |
| 8 | Ignition Switch, Wipers, Radio, Steering Wheel Controls, Body Control Module, Auxiliary Power (Power Drop), Power Windows, Sunroof, Heating Ventilation Air Conditioning Controls, Daytime Running Lamps, Rear Defog Relay |
| 9 | Cooling Fan 2 |
| 10 | Cooling Fan 3 |
| 11 | Starter Solenoid |
| 12 | Cooling Fan 1 |
| 13 | Ignition Main |
| 14 | Air Pump (Optional) |
| 15 | A/C Clutch |
| 16 | Horn |
| 17 | Fog Lamps |
| 18 | Fuel Pump, Speed Control (L67 only) |
| 19 | Fuel Pump |
| 20 | Air Pump (Optional) |
| 21 | Generator |
| 22 | ECM |
| 23 | A/C Compressor Clutch |
| 24 | Cooling Fan |
| 25 | Electronic Ignition |
| 26 | Transaxle |
| 27 | Horn |
| 28 | Fuel Injector |
| 29 | Oxygen Sensor |
| 30 | Engine Emissions |
| 31 | Fog Lamps |
| 32 | Headlamp (Right) |
| 33 | Rear Compartment Release |
| 34 | Parking Lamps |
| 35 | Fuel Pump |
| 36 | Headlamp (Left) |
| 37 | Spare |
| 38 | Spare |
| 39 | Spare |
| 40 | Spare |
| 41 | Spare |
| 42 | Spare |
| 43 | Fuse Puller |
| SYMBOL | A/C Compressor Clutch Diode |
2003
Instrument Panel Fuse Block
| № | Usage |
|---|---|
| TIRE RESET | Tire Inflation Monitor Reset Button |
| PWR WINDOWS | Power Windows |
| PWR SUNROOF | Power Sunroof |
| REAR DEFOG | Rear Window Defogger |
| POWER SEATS | Power Seats |
| Blank | Not Used |
| PARK LOCK | Ignition Key Solenoid |
| Blank | Not Used |
| Blank | Not Used |
| PCM, BCM, U/H RELAY | Ignition Signal: Hot in Run and Start, Powertrain Control Module, Body Control Module, Underhood Relay |
| RADIO PREM. SOUND | Remote Radio Premium Sound |
| POWER MIRRORS | Power Mirrors |
| Blank | Not Used |
| PANEL DIMMING | Panel Dimming |
| Blank | Not Used |
| IGN 0, CLUSTER, PCM, BCM | Ignition Signal: Hot in Run, Unlock and Start, Cluster, Powertrain Control Module, Body Control Module |
| Blank | Not Used |
| Blank | Not Used |
| Blank | Not Used |
| INADV POWER BUS | Interior Lamps |
| DOOR LOCKS | Door Locks |
| TRAP ALERT | Trap Alert |
| TAIL LAMPS, LIC LAMPS | Taillamps, License Lamps |
| RADIO | Radio |
| HEATED MIRROR | Not Used |
| CRUISE | Cruise Control |
| Blank | Not Used |
| CLUSTER | Instrument Panel Cluster |
| CIGAR LTR | Cigarette Lighter, Auxiliary Power Connection (Power Drop) |
| STOP LAMPS | Stoplamps |
| ONSTAR | OnStar |
| FRT PARK LPS | Front Parking Lamps |
| POWER DROP | Auxiliary Power Connection (Power Drop): Hot in ACC and Run |
| CRANK SIGNAL, BCM, CLUSTER | Crank Signal, Body Control Module, Cluster, Powertrain Control Module |
| HVAC | Ignition Signal, Heating Ventilation Air Conditioning Control Head |
| BTSI PARK LOCK | Shifter Lock Solenoid |
| AIR BAG | Air Bag |
| BCM PWR | Body Control Module |
| HAZARD | Hazard Flashers |
| LH HEATED SEAT | Driver’s Heated Seat |
| Blank | Not Used |
| BCM ACC | Ignition Signal: Hot in ACC and Run, Body Control Module |
| Blank | Not Used |
| LOW BLOWER | Low Blower |
| ABS | Anti-Lock Brakes |
| TURN SIGNALS, CORN LPS | Turn Signals, Cornering Lamps |
| RADIO, HVAC, RFA, CLUSTER | Radio, Heating Ventilation Air Conditioning Head, Remote Keyless Entry, Cluster |
| HIGH BLOWER | High Blower |
| RH HEATED SEAT | Passenger’s Heated Seat |
| STRG WHL CONT | Audio Steering Wheel Controls |
| WIPER | Windshield Wipers |
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Anti-Lock Brake System |
| 2 | Starter Solenoid |
| 3 | Power Seats, Rear Window Defogger Heated Seats |
| 4 | High Blower, Hazard Flasher, Stoplamps, Power Mirror, Door Locks |
| 5 | Ignition Switch, BTSI, Stoplamps, Anti-Lock Brake System, Turn Signals, Cluster, Air Bag, Daytime Running Lamps Module |
| 6 | Cooling Fan |
| 7 | Retained Accessory Power, Keyless Entry, Data Link, Heating Ventilation Air Conditioning Head, Cluster, Radio, Auxiliary Power (Power Drop), Cigarette Lighter |
| 8 | Ignition Switch, Wipers, Radio, Steering Wheel Controls, Body Control Module, Auxiliary Power (Power Drop), Power Windows, Sunroof, Heating Ventilation Air Conditioning Controls, Daytime Running Lamps, Rear Window Defogger Relay |
| 9 | Cooling Fan 2 |
| 10 | Cooling Fan 3 |
| 11 | Starter Solenoid |
| 12 | Cooling Fan 1 |
| 13 | Ignition Main |
| 14 | Air Pump (Optional) |
| 15 | Not Used |
| 16 | Horn |
| 17 | Fog Lamps |
| 18 | Not Used |
| 19 | Fuel Pump |
| 20 | Not Used |
| 21 | Generator |
| 22 | Engine Control Module |
| 23 | A/C Compressor Clutch |
| 24 | Cooling Fan |
| 25 | Electronic Ignition |
| 26 | Transaxle |
| 27 | Horn |
| 28 | Fuel Injector |
| 29 | Oxygen Sensor |
| 30 | Engine Emissions |
| 31 | Fog Lamps |
| 32 | Headlamp (Right) |
| 33 | Rear Compartment Release |
| 34 | Parking Lamps |
| 35 | Fuel Pump |
| 36 | Headlamp (Left) |
| 37 | Not Used |
| 38 | Not Used |
| 39 | Not Used |
| 40 | Not Used |
| 41 | Not Used |
| 42 | Not Used |
| 43 | Not Used |
| SYMBOL | A/C Compressor Clutch Diode |
2004
Instrument Panel Fuse Block
| № | Usage |
|---|---|
| TIRE RESET | Tire Inflation Monitor Reset Button |
| PWR/WNDW PWR S/ROOF | Power Windows, Power Sunroof |
| R/DEFOG | Rear Window Defogger |
| PWR SEAT | Power Seat |
| Blank | Not Used |
| PRK/LCK | Ignition Key Solenoid |
| Blank | Not Used |
| Blank | Not Used |
| PCM, BCM, U/H | Ignition Signal: Hot in Run and Start, Powertrain Control Module, Body Control Module, Underhood Relay |
| RADIO PREM. SOUND | Remote Radio Premium Sound |
| PWR MIR | Power Mirrors |
| Blank | Not Used |
| INT/ILLUM | Panel Dimming |
| Blank | Not Used |
| IGN 0: CLSTR, PCM & BCM | Ignition Signal: Hot in Run, Unlock and Start, Cluster, Powertrain Control Module, Body Control Module |
| Blank | Not Used |
| Blank | Not Used |
| Blank | Not Used |
| ACCY PWR BUS | Interior Lamps |
| DR/ LCK | Door Locks |
| Blank | Not Used |
| R/LAMPS | Taillamps, License Plate Lamps |
| Blank | Not Used |
| CRUISE | Cruise Control |
| Blank | Not Used |
| CLSTR | Instrument Panel Cluster |
| LTR | Cigarette Lighter |
| STOP LAMPS | Stoplamps |
| ONSTAR | OnStar |
| PRK/LGHT | Parking Lamps |
| Blank | Not Used |
| CRNK SIG, BCM, CLSTR | Crank Signal, Body Control Module, Cluster, Powertrain Control Module |
| HVAC | Ignition Signal, Heating, Ventilation and Air Conditioning Control Head |
| BTSI | Shifter Lock Solenoid |
| AIR BAG | Air Bag |
| BCM PWR | Body Control Module |
| HAZRD | Hazard Warning Flashers |
| LH HTD SEAT | Driver’s Heated Seat |
| Blank | Not Used |
| BCM ACCY | Ignition Signal: Hot in ACCESSORY and RUN, Body Control Module |
| Blank | Not Used |
| LOW BLWER | Low Blower |
| ABS | Anti-Lock Brakes |
| TRN SIG | Turn Signals, Cornering Lamps |
| RADIO, HVAC, RFA, CLSTR ALDL | Radio; Heating Ventilation, and Air Conditioning Head; Remote Keyless Entry, Cluster |
| HI BLWR | High Blower |
| RH HTD SEAT | Passenger’s Heated Seat |
| STR/WHL CNTRL | Audio Steering Wheel Controls |
| WPR | Windshield Wipers |
Underhood Fuse Block
| № | Usage |
|---|---|
| 1 | Anti-Lock Brake System |
| 2 | Starter Solenoid |
| 3 | Power Seats, Rear Window Defogger, Heated Seats |
| 4 | High Blower, Hazard Flasher, Stoplamps, Power Mirror, Door Locks |
| 5 | Ignition Switch, BTS Shifter Lock Solenoid, Stoplamps, Anti-Lock Brake System, Turn Signals, Cluster, Air Bag, Daytime Running Lamps Module |
| 6 | Cooling Fan |
| 7 | Retained Accessory Power (RAP), Remote Keyless Entry, Data Link, Heating, Ventilation and Air Conditioning Head, Cluster, Radio, Cigarette Lighter |
| 8 | Ignition Switch, Windshield Wipers, Radio, Steering Wheel Controls, Body Control Module, Power Windows, Sunroof; Heating, Ventilation and Air Conditioning Controls; Daytime Running Lamps, Rear Window Defogger Relay |
| 9 | Cooling Fan 2 |
| 10 | Cooling Fan 3 |
| 11 | Starter Solenoid |
| 12 | Cooling Fan 1 |
| 13 | Ignition Main |
| 14 | Air Pump (Optional) |
| 15 | Not Used |
| 16 | Horn |
| 17 | Fog Lamps |
| 18 | Not Used |
| 19 | Fuel Pump |
| 20 | Not Used |
| 21 | Generator |
| 22 | Engine Control Module |
| 23 | Air Conditioner Compressor Clutch |
| 24 | Cooling Fan |
| 25 | Electronic Ignition |
| 26 | Transaxle |
| 27 | Horn |
| 28 | Fuel Injector |
| 29 | Oxygen Sensor |
| 30 | Engine Emissions |
| 31 | Fog Lamps |
| 32 | Right Headlamp |
| 33 | Rear Compartment Release |
| 34 | Parking Lamps |
| 35 | Fuel Pump |
| 36 | Left Headlamp |
| 37 | Not Used |
| 38 | Not Used |
| 39 | Not Used |
| 40 | Not Used |
| 41 | Not Used |
| 42 | Not Used |
| 43 | Not Used |
| SYMBOL | Air Conditioner Compressor Clutch Diode |