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Buick Regal (1997 - 1999) - fuse box diagram

avatar Jonathan Yarden Jan 30, 2021 · 5 min. read

In this article you will find a description of fuses and relays Buick, 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: 1997, 1998, 1999

Instrument Panel Fuse Block

Some fuses are located in a fuse block on the passenger’s side of the instrument panel.

Buick Regal mk4 - fuse box - instrument panel

Circuit Breakers Usage
A Tire Inflation Monitor Reset Button
B Power Windows, Power Sunroof
C Rear Window Defogger
D Power Seat


Fuses Usage
1 Ignition Key Solenoid
4 Ignition Signal — Hot in Run and Start — PCM, BCM U/H Relay
5 Remote Radio Premium Sound
6 Power Mirrors
8 Panel Dimming
10 Ignition Signal — Hot in Run, Unlock and Start — Cluster, Powertrain Control Module, Body Control Module
13 DRL Module
14 Interior Lamps
15 Door Locks
17 Taillamps, License Lamps
18 Radio
19 Heated Mirrors
20 Cruise Control
22 Instrument Panel Cluster
23 Cigarette Lighter, Auxiliary Power Connection (Power Drop), Data Link
24 Stoplamps
26 Parking Lamps
27 Auxiliary Power Connection (Power Drop): Hot in ACC and Run
28 Crank Signal, Body Control Module, Cluster, Powertrain Control Module
29 Ignition Signal — HVAC Control Head
30 Shifter Lock Solenoid
31 Air Bag
32 Body Control Module
33 Hazard Flashers
34 Driver’s Heated Seat
36 Ignition Signal: Hot in ACC and Run, Body Control Module
38 Low Blower
39 Anti-Lock Brakes
40 Turn Signals, Cornering Lamps
41  Radio, HVAC Head, Remote Keyless Entry, Cluster, CEL TEL
42 High Blower
43 Passenger’s Heated Seat
44 Audio Steering Wheel Controls
45 Wipers

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.

Buick Regal mk4 - fuse box - engine compartment

Fuses Usage
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, 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


Relays Usage
11 Starter Solenoid
12 Cooling Fan 1
13 Ignition Main
14 Not Used
15 A/C Clutch
16 Horn
17 Fog Lamps
18 Fuel Pump, Speed Control (L67 only)
19 Fuel Pump
20 Not Used
21 Generator
22 ECM
23 A/C Compressor Clutch
24 Cooling Fan
25 Electronic Ignition
26 Transaxle


Fuses Usage
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 Air Conditioner Compressor Clutch Diode

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

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