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Decoding the Mystery of Buick Vehicle Identification Numbers (VINs) is more than just a string of random characters. Since 1954, the National Highway Traffic Safety Administration (NHTSA) has standardized these unique identifiers, transforming them into a powerful tool for understanding your vehicle’s complete history and specifications.

Understanding the Buick VIN: More Than Just Numbers

A Vehicle Identification Number (VIN) is a 17-character code that serves as your Buick’s automotive DNA. Each character reveals critical information about the vehicle’s origin, specifications, and manufacturing details. Modern Buicks follow a standardized worldwide format (ISO ³⁷⁷⁹⁄₃₇₈₀) that provides a wealth of information at a glance.

VIN Location: Where to Find Your Buick’s Unique Identifier

Buick owners can locate their VIN in multiple locations:

• Dashboard plate (visible through windshield on driver’s side)
• Driver’s door jamb or door pillar label
• Engine bay (stamped on firewall or radiator support)
• Front frame rail
• Vehicle title and registration documents
• Insurance card

Anatomy of a Buick VIN: Breaking Down the Code

A Buick VIN is divided into three primary blocks:

World Manufacturer Identifier (WMI) - First 3 Characters

The WMI reveals where and by whom the vehicle was manufactured. For Buick, common WMI codes include:

• 1G4/5GA: United States
• 2G4: Canada
• 3G4: Mexico
• KL4: South Korea
• LSG: China

Vehicle Descriptor Section (VDS) - Characters 4-9

The VDS provides detailed information about:

• Platform/body type
• Series and trim level
• Engine specifications
• Restraint system details

Vehicle Identifier Section (VIS) - Characters 10-17

This section includes:

• Model year code (10th position)
• Assembly plant code (11th position)
• Unique production sequence number

Major Buick Production Plants

Buick vehicles have been manufactured in several notable facilities:

• Lansing Delta Township Assembly (Michigan, USA)
• Fairfax Assembly (Kansas City, Kansas)
• Orion Assembly (Michigan, USA)
• GM Korea Bupyeong Plant (Incheon, South Korea)
• SAIC-GM Jinqiao Plant (Shanghai, China)

🚗 Note: Always enter all 17 VIN characters exactly, avoiding spaces. The letters I, O, and Q are never used to prevent confusion with numbers 1 and 0.

Why Decode Your Buick VIN?

Decoding your Buick VIN can help you:

• Confirm basic vehicle identity
• Verify factory specifications
• Ensure accurate parts matching
• Support service and repair planning

Practical Applications of VIN Decoding

Whether you’re buying a used Buick, scheduling maintenance, or simply curious about your vehicle’s history, the VIN provides a comprehensive snapshot of your car’s identity and specifications.

Understanding your Buick’s VIN transforms a seemingly random string of characters into a powerful tool for vehicle identification, maintenance, and historical insight. Each digit tells a story – from the car’s birthplace to its unique manufacturing details.