Buick VIN Decoder — Decode Any Buick VIN Free
Decode any Buick VIN free in seconds. Enter the 17-character VIN from your Buick Enclave, Encore, Envision or LaCrosse and the decoder breaks it down position by position — manufacturer, model year, engine and plant — then validates the check digit. No signup, no charge.
Free · instant · no signup · full or partial VIN
Common Buick / GM WMI prefixes (VIN positions 1–3)
| WMI prefix | What it identifies |
|---|---|
| 1G4 | Buick car, built in the USA |
| 5GA | Buick SUV (Enclave), built in the USA |
| LRB | Buick (e.g. Envision), built in China |
How a Buick VIN breaks down
Buick is a GM division, and post-1981 Buick VINs follow the 17-character ISO 3779 standard. Positions 1–3 are the GM World Manufacturer Identifier — a US-built Buick car commonly opens 1G4, while the Enclave SUV opens 5GA and the China-built Envision opens LRB. Positions 4–8 encode the model line, body and engine; position 9 is the check digit; position 10 the model year; position 11 the plant; and 12–17 the sequential build number.
Because Buick shares GM platforms, the descriptor section distinguishes a Buick from its Chevrolet or GMC siblings of the same year and identifies the engine.
Decode vs. history: what the VIN can and can't tell you
Decoding a Buick VIN reveals the factory build — year, engine, plant and trim. It won't show post-sale events. For salvage, accident and odometer brands, run the same VIN through a history report drawing on NMVTIS and state-DMV records.
Frequently Asked Questions
Where is the VIN on a Buick?
On the lower-left corner of the windshield, the driver-side doorjamb sticker, and the title and registration.
What does a Buick VIN starting with 1G4 mean?
1G4 is GM's World Manufacturer Identifier for a US-built Buick passenger car. The Enclave SUV uses 5GA, and the China-built Envision uses LRB.
Can I decode an Enclave VIN here?
Yes. All modern Buick models use the 17-character standard this decoder reads.
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A decode shows the factory specs. A history report adds accidents, title brands, odometer fraud, theft records and open recalls — sourced from NMVTIS and every state DMV.
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