2004 Buick Regal Problems & Reliability

When it comes to mid-2000s sedans, the 2004 Buick Regal often stands out as a vehicle that many remember for its blend of comfort and performance. As a 30-year-old, you might recall seeing these cars on the road during your teenage years, or perhaps you even had the chance to drive one. The Regal was known for its smooth ride and spacious interior, making it a popular choice for families and commuters alike. However, like any vehicle, it wasn’t without its share of issues. In this blog post, we’ll delve into the common problems and reliability concerns associated with the 2004 Buick Regal, providing you with a comprehensive overview of what to expect if you’re considering purchasing one or simply want to reminisce about this classic sedan. While the 2004 Buick Regal was praised for its comfortable driving experience, it did face some challenges in terms of reliability. Owners have reported a range of issues, from electrical glitches to engine performance hiccups. Understanding these problems is crucial for anyone looking to maintain or purchase a used Regal today. We’ll explore the most frequently reported issues, discuss their potential impact on the car’s longevity, and offer insights into how these problems can be addressed. Whether you’re a car enthusiast or someone considering a nostalgic purchase, this post aims to equip you with the knowledge you need to make informed decisions about the 2004 Buick Regal.
Body Components

Parts Assessed:

Windows, power locks, manual locks, doors, trunk, tailgate, mirrors, power and manual seat controls, seat belts, sunroof, convertible top, glass defects.

Reported Problems:

Analysis:

Parts Assessed

Brake pads, brake rotors, brake calipers, anti-lock braking system (ABS), brake lines, brake master cylinder, brake booster, parking brake, brake sensors, regenerative braking system (if applicable).

Reported Problems:

Analysis:

Parts Assessed

Air conditioning compressor, AC condenser, AC evaporator, heater core, blower motor, automatic climate control system, refrigerant leaks, HVAC electrical components, temperature sensors, ventilation system.

Reported Problems:

Analysis:

Parts Assessed

CV joints, driveshaft, axles, differential, limited-slip differential (if applicable), traction control system, electronic stability control (ESC), four-wheel-drive (4WD) components, all-wheel-drive (AWD) components, transfer case, driveline vibration.

Reported Problems:

  • Serpentine Belt Tensioner Pulley May Wear Out

Analysis:

The 2004 Buick Regal has a known issue with the serpentine belt tensioner pulley wearing out over time. This can lead to annoying squeaks or even more serious engine problems if not addressed. Overall, while this is a common problem, regular maintenance can help keep your Regal running smoothly.

Parts Assessed

Infotainment system, GPS navigation, Bluetooth connectivity, touchscreen display, phone pairing, backup camera, rear entertainment system, head-up display, instrument cluster, digital gauges.

Reported Problems:

Analysis:

Parts Assessed

Radiator, radiator hoses, cooling fan, water pump, thermostat, antifreeze leaks, engine coolant reservoir, overheating prevention system, intercooler (if applicable).

Reported Problems:

Analysis:

Parts Assessed

Alternator, battery, ignition switch, ignition coil, spark plugs, ignition wires, engine control module (ECM), electronic ignition system, auto stop/start function, battery cables, engine wiring harness, fuse box, relays, starter motor.

Reported Problems:

Analysis:

Parts Assessed

Engine rebuilds, cylinder head, head gasket, timing chain, timing belt, camshaft, crankshaft, connecting rods, turbocharger or supercharger (if applicable), valve train, piston rings, oil control system, engine knocking, engine misfires.

Reported Problems:

Analysis:

Parts Assessed

Muffler, catalytic converter, exhaust manifold, heat shields, exhaust pipes, oxygen (O₂) sensors, resonator, exhaust leaks, emissions control system.

Reported Problems:

Analysis:

Parts Assessed

Fuel pump, fuel injectors, fuel rail, fuel pressure regulator, throttle body, fuel gauge sensor, evaporative emissions system, EGR (exhaust gas recirculation) valve, charcoal canister, fuel filter, fuel tank, vapor leaks.

Reported Problems:

Analysis:

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Onboard Electronics

Parts Assessed

Cruise control, keyless entry system, push-button start, wiper motor, warning lights, power mirrors, interior lighting, exterior lighting, dashboard indicators, electronic parking brake, tire pressure monitoring system (TPMS), alarm and security system, remote engine start, heated and ventilated seats, heated steering wheel, wireless charging pad.

Reported Problems:

Analysis:

Parts Assessed

Dashboard rattles, squeaks, wind noise, door seals, weather stripping, water leaks, air leaks, excessive road noise, suspension noise, drivetrain noise, exhaust rattles, engine bay noises.

Reported Problems:

Analysis:

Parts Assessed

Paint durability, clear coat protection, rust prevention, corrosion resistance, body panel alignment, door seals, window trim, plastic trim, metal finishes, fading, cracking, peeling.

Reported Problems:

Analysis:

Parts Assessed

Struts, shocks, control arms, sway bars, ball joints, tie rods, wheel bearings, power steering pump, power steering fluid leaks, electronic power steering (EPS), steering rack and pinion, steering linkage, alignment issues, torsion bars, springs, air suspension (if applicable).

Reported Problems:

Analysis:

Parts Assessed

Transmission rebuild, transmission replacement, torque converter, transmission solenoids, gear selector, gear shifting, transmission control module (TCM), transmission fluid leaks, clutch (manual transmission), automatic transmission valve body, CVT (continuously variable transmission) components, dual-clutch transmission (DCT) components.

Reported Problems:

Analysis:

Conclusion

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