Buick VIN Decoder: 5 Common WMI Codes
Decode any Buick VIN free: the first three characters (1G4, 2G4, 5GA, KL4, LRB) identify the assigned manufacturer and vehicle type, position 10 encodes the model year and position 11 commonly identifies the assembly plant. Then check that vehicle's recalls and history separately.
Run the exact 17-character VIN, compare the physical vehicle, and keep each history category separate.
A Buick VIN check can identify a Buick car, crossover, or SUV and may return model, body, engine, fuel, drive, and restraint data. It helps confirm the advertised vehicle, but exact trim, convenience packages, prior fleet use, maintenance, collision repairs, and title history remain separate checks.
Buying a used Buick? Enter its VIN.
Confirm the Buick identity free. For a purchase decision, the optional history report can show returned title, mileage and auction records; coverage varies by VIN.
Title brands · Odometer records · Auction history, where reported
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See what the paid report includes →Buick WMI codes (VIN positions 1–3)
The first three VIN characters identify the assigned manufacturer and vehicle type. These common World Manufacturer Identifier patterns were checked against NHTSA vPIC data, but a prefix alone does not prove final assembly country; confirm the complete VIN’s returned plant fields and vehicle-specific records.
| WMI | What it identifies |
|---|---|
| 1G4 | Buick passenger cars built in the USA; NHTSA vPIC registers this code to General Motors LLC |
| 2G4 | Buick passenger cars with this WMI include Canadian-built examples; the leading 2 does not alone prove the assembly country |
| 5GA | Buick SUVs (multipurpose passenger vehicles) built in the USA |
| KL4 | Buick crossovers with this WMI include South Korean-built examples; the K prefix alone does not prove the assembly country |
| LRB | Buick Envision crossovers built in China by the SAIC-General Motors joint venture (Shanghai General Motors per NHTSA vPIC) |
Where to find the VIN on a Buick
Buicks display the VIN on a plate at the base of the windshield on the driver's side and on the certification label inside the driver's door jamb. It is also printed on the title, registration, and insurance card. Because Buick sources vehicles globally, use the complete VIN and manufacturer plant data to identify where a specific car was assembled; the first character alone is insufficient.
Check Buick warranty coverage by VIN
Buick's published coverage (buick.com) is a 3-year/36,000-mile bumper-to-bumper limited warranty and a 5-year/60,000-mile powertrain limited warranty. There is no public VIN lookup; sign in to your Buick owner account or ask any Buick dealer to check remaining coverage against the 17-digit VIN.
When the Chinese-built Envision went on sale in the summer of 2016, GM became the first major American automaker to sell a China-assembled vehicle in the US. Those Envision examples carried VINs beginning with LRB; confirm the assembly plant for an individual vehicle from its full VIN.
What to verify on a Buick
- Compare decoded body, engine, and drive data with the actual crossover, SUV, or car.
- Verify trim and option claims through original documents and installed equipment.
- Ask about rental or fleet use instead of trying to infer it from the VIN structure.
- Use Buick and NHTSA tools for VIN-specific recalls.
Which Buick model year to avoid
Every Buick model with several years on record, ranked year against year on NHTSA owner complaints and recall campaigns. The comparison is within one model only — a year is called out when it stands clear of that model’s other years.
Buick recalls and reported problems by model year
Each page below reports the NHTSA safety recalls and owner complaints on record for one Buick model year. Model-year data narrows where to look; only a VIN lookup tells you whether a specific vehicle still has open recall work.
Buick VIN and buyer checklist
- Match dashboard, door-label, title, and service VINs.
- Verify engine, body, drive, and equipment.
- Request fleet, rental, service, damage, and ownership documentation.
- Check recalls, title, mileage, theft, and obtain an inspection.
What a Buick VIN check cannot prove
- A VIN alone does not prove accident, title-brand, theft, lien, ownership, service, or complete mileage history.
- Decoded equipment can be incomplete or broad; confirm trim, options, and installed hardware on the vehicle and its documents.
- A “no open recalls” result is time-specific and is not a mechanical inspection or a promise that every past recall was completed correctly.
Sources reviewed
Open the underlying public source and verify that its scope matches the question you are asking.
- NHTSA VIN DecoderU.S. government VIN identity and manufacturer-submitted vehicle data.
- NHTSA vPICNHTSA vehicle-product information and decoding resources.
- NHTSA RecallsVIN-specific open safety recall lookup and recall campaign details.
- Buick official websiteBuick manufacturer resource
- 49 CFR Part 565 - Vehicle Identification Number requirementseCFR, U.S. Government Publishing Office
Buick VIN check questions
What can a Buick VIN tell me?
A valid 17-character Buick VIN can identify the vehicle and may return manufacturer-submitted attributes such as model year, model, body class, engine, drive type, or restraint details. Returned fields vary, so compare them with the vehicle and title instead of treating every blank as a defect.
Can a VIN check confirm the exact Buick trim and options?
Not always. NHTSA decoding can return useful factory identity data, but exact packages, optional equipment, and later modifications may require the original window sticker, build record, dealer documentation, or a physical inspection.
Does a Buick VIN check include recall information?
VIN identity and recall status are separate checks. Use NHTSA’s recall lookup and Buick’s official owner or recall resources, because recall status can change and some newly announced campaigns may not appear immediately.
What should I verify for this Buick?
Match dashboard, door-label, title, and service VINs. Verify engine, body, drive, and equipment. Request fleet, rental, service, damage, and ownership documentation. Check recalls, title, mileage, theft, and obtain an inspection.
What does a Buick VIN starting with KL4 mean?
NHTSA vPIC registers KL4 to General Motors for Buick multipurpose passenger vehicles, and South Korean-built crossover examples use it. K alone does not prove the assembly country; decode the complete VIN to confirm the plant. This is a common registered or decoded pattern, not standalone proof of final assembly; confirm the specific vehicle’s complete NHTSA plant fields and manufacturer records.
How long is Buick's factory warranty?
Current Buicks carry a 3-year/36,000-mile bumper-to-bumper limited warranty and a 5-year/60,000-mile powertrain limited warranty. A Buick dealer or your Buick owner account can confirm the exact coverage remaining on a specific VIN.