The service and repair manual for the 2004 Buick Regal — 3.8L V6 and 3.8L V6 engines, 2 trims. Matched to this exact model year, so the specifications and sequences are the ones Buick published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2004 |
|---|---|
| Engines | 3.8L V6 — 232 cu in, OHV, supercharged 3.8L V6 — 232 cu in, OHV |
| Trims | GS Sedan 4-Door · LS Sedan 4-Door |
| Federal record | 4 recalls · 94 complaints · 203 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2004 Regal manual
03 / ContentsSections in the manual
- Quick Lookups 382
- General Information 2,133
- Accessories & Equipment 3,110
- Heating, Ventilation & A/C (HVAC) 381
- Body & Frame 1,643
- Maintenance 32
- Brakes 600
- Restraints 200
- Drivelines & Axles 20
- Steering 214
- Electrical 1,436
- Suspension 185
- Engine Mechanical 589
- Transmission 888
- Engine Performance 1,627
04 / Known issuesRecalls on federal record for the 2004 Regal
- Engine And Engine Cooling — engine · 15V701000Engine oil that drips onto the hot surface of the exhaust manifold may result in a fire.
- Steering · 08E063000If the weld fails, loss of steering could result, possibly resulting in a vehicle crash.
- Steering · 09E005000A broken steering knuckle could result in loss of steering control and a possible crash without warn.
- Engine And Engine Cooling — engine · 15V201000The leaking engine oil can drip onto the hot surface of the exhaust manifold, increasing the risk of.
Owners have filed 94 complaints and Buick has issued 203 technical service bulletins for the 2004 Regal. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2004 Regal manual
Is this manual specific to the 2004 Regal?
Yes. It is the OEM manual matched to the 2004 model year, covering the 3.8L V6 and 3.8L V6 across the GS Sedan 4-Door, LS Sedan 4-Door trims. Specifications and procedure sequences are the ones Buick published for this year.
What 2004 Regal problems does it help with?
4 recalls are on federal record for the 2004 Regal, covering engine and engine cooling, steering. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Buick dealers.
Does it include 2004 Regal wiring diagrams?
Yes — the complete wiring diagrams for the 2004 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther Regal years and 2004 Buick models
2003 Regal · 2002 Regal · 2001 Regal · 2000 Regal · 1999 Regal · 1998 Regal · all 30 years
2004 Buick Century · 2004 Buick LeSabre · 2004 Buick Park Avenue · 2004 Buick Rainier · 2004 Buick Rendezvous · every 2004 model