Free 1991 Pontiac Bonneville VIN Decoder

How to decode a 1991 Pontiac Bonneville VIN

Characters 1-3 of a 1991 Pontiac Bonneville VIN

A World Manufacturer Identifier (WMI) is a unique code used to identify the maker and country of origin of a vehicle. For the 1991 Pontiac Bonneville, the WMI “1G2” signifies that it is manufactured by General Motors LLC in the United States, specifically in Warren, Michigan. This code is the first segment of the Vehicle Identification Number (VIN), enabling the recognition of the vehicle’s manufacturer and type. Through the WMI, one can also ascertain that the Pontiac Bonneville from this period is classified as a passenger car. This system ensures a standardized method for identifying vehicles worldwide, making information about the car’s origin and its manufacturer readily accessible.

List of WMI Codes for a 1991 Pontiac Bonneville

WMI: 1G2

• Model Years Covered: 1987-2005
• Example VIN: 1G2HX54C2M1241658
• 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 Pontiac Bonneville 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 Pontiac Bonneville:

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 Pontiac Bonneville 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 Pontiac Bonneville VIN — Year Code

11th Character in the 1991 Pontiac Bonneville VIN — Plant Code(s)

Known 1991 Pontiac Bonneville Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 1991 Pontiac Bonneville

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

Check your Pontiac Bonneville’s VIN below:

What info can a 1991 Pontiac Bonneville VIN reveal?

• Model Year: The VIN may indicate a vehicle from the year 1991, possibly highlighting its specific age and potential generational design features.
• Vehicle Specifications: This VIN suggests a Bonneville SE model, possibly equipped with a V-shaped engine configuration, attributing to its specific performance characteristics.
• Engine Specifications: The engine may boast a displacement of 3.8 liters (3800 CC or 231.89 CI) with six cylinders, potentially providing insights into the vehicle’s power and efficiency.
• Fuel Delivery System: The multipoint fuel injection (MPFI) system may indicate a more efficient fuel delivery, possibly improving fuel economy and engine performance.
• Manufacturing Location: According to the VIN, the vehicle may have been constructed in Wentzville, Missouri, United States by Wentzville Assembly, possibly unveiling the vehicle’s assembly location, offering clues to its manufacturing standards and origin.
• Safety Features: The inclusion of an automatic seat belt type may suggest the vehicle’s safety offerings, which can hint at the broader safety features available for this model.
• Body and Design: Described as a Sedan/Saloon with four doors, the VIN possibly reveals the vehicle’s body class and structure, indicating its intended use and capacity.

Sample VIN Decode Report for a 1991 Pontiac Bonneville

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