Free 1991 Buick Century VIN Decoder

How to decode a 1991 Buick Century VIN

Characters 1-3 of a 1991 Buick Century VIN

A World Manufacturer Identifier (WMI) is a unique code used to identify the manufacturer of a vehicle, along with the country of manufacture, and the specific type of the vehicle it is. In the case of the 1991 Buick Century, the WMI is “3G4”, indicating that General Motors LLC in Warren, Michigan, United States, is the manufacturer. This WMI specifies that the vehicle is a passenger car, produced during specific model years including 1990-1991 and 1993-1994. The presence of this WMI ensures that each vehicle can be distinctly recognized worldwide by its unique combination of characters, representing crucial information about its origin, manufacturer, and vehicle type.

List of WMI Codes for a 1991 Buick Century

WMI: 3G4

• Model Years Covered: 1990-1991, 1993-1994
• Example VIN: 3G4AH54RXMS624319
• Manufacturer Name: General Motors LLC
• Vehicle Type: Passenger Car
• City: Warren
• State or Province: Michigan
• Country: United States

WMI: 1G4

• Model Years Covered: 1984, 1986-1996
• Example VIN: 1G4AG54NXM6435996
• Manufacturer Name: General Motors LLC
• Vehicle Type: Passenger Car
• City: Warren
• State or Province: Michigan
• Country: United States

Characters 4-8 are the Vehicle Descriptor Section (VDS) of a 1991 Buick Century VIN

These characters correspond to components like:

• Engine type
• Transmission
• Model or trim
• Body style
• Gross vehicle weight range

Below find the known vehicle descriptor codes for a 1991 Buick Century:

Auto manufacturers have some discretion to decide how they want to code this section, but its contents and decoded results are generally consistent.

Character 9 is the “check digit” in a 1991 Buick Century VIN.

Based on a formula developed by the US Department of Transportation, it helps reduce fraud by ensuring the validity of the VIN.

10th Character in the 1991 Buick Century VIN — Year Code

11th Character in the 1991 Buick Century VIN — Plant Code(s)

Known 1991 Buick Century Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 1991 Buick Century

The final 6 characters in a 1991 Buick Century’s 17-digit VIN are its serial number, which will be unique to every vehicle.

Check your Buick Century’s VIN below:

What info can a 1991 Buick Century VIN reveal?

• Model Year: The VIN can reveal the vehicles model year being the year 1991, providing insights into the age and potential market value of the vehicle.
• Body Class and Doors: The VIN designates the vehicle as a Passenger Car with a Sedan/Saloon body class, offering insight into the vehicle’s general shape and intended use. Furthermore, it might have 4 doors, providing a glimpse into the vehicle’s design and structure.
• Engine Type and Displacement: The VIN encodes details such as a V-Shaped engine configuration, a 3.3L (3300 CC) displacement, and a 6-cylinder layout, which can offer a glimpse into the vehicle’s potential performance capabilities.
• Fuel Type and Injection System: It can be inferred from the VIN that the vehicle runs on Gasoline and features a Multipoint Fuel Injection (MPFI) system, highlighting its potential fuel delivery mechanism.
• Manufacturing Details: The VIN specifies that the vehicle was assembled in Oklahoma City, United States, by the Oklahoma City Assembly plant, potentially providing information on its production origin.
• Safety and Convenience Features: It is possible that the VIN suggests the vehicle comes with an Automatic seat belt type, offering some insight into the safety features offered.
• Identification and Trim Level: The unique Sample VIN and Trim (Custom) are specified, potentially allowing for exact identification and indicating the vehicle’s potential feature level or package.

Sample VIN Decode Report for a 1991 Buick Century

Source