Free 1991 GMC Sonoma VIN Decoder

How to decode a 1991 GMC Sonoma VIN

Characters 1-3 of a 1991 GMC Sonoma VIN

World Manufacturer Identifiers (WMIs) are unique codes assigned to every vehicle manufacturer, serving as the initial segment of the Vehicle Identification Number (VIN) to identify the vehicle’s maker, type, and the country of manufacture. The 1991 GMC Sonoma, for instance, carries the WMI “1GT”, indicating that it was produced by General Motors LLC in the United States. Specifically, this truck rolled off the assembly line in Warren, Michigan. This part of the VIN is crucial for recognizing the vehicle’s origin and manufacturer, enabling easy identification and tracking. It’s an essential aspect of automotive identification, providing a global standard for registering and categorizing vehicles worldwide.

List of WMI Codes for a 1991 GMC Sonoma

WMI: 1GT

• Model Years Covered: 1991-2004
• Example VIN: 1GTCS14E0M8504512
• Manufacturer Name: General Motors LLC
• Vehicle Type: Truck
• City: Warren
• State or Province: Michigan
• Country: United States

Characters 4-8 are the Vehicle Descriptor Section (VDS) of a 1991 GMC Sonoma 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 GMC Sonoma:

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 GMC Sonoma 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 GMC Sonoma VIN — Year Code

11th Character in the 1991 GMC Sonoma VIN — Plant Code(s)

Known 1991 GMC Sonoma Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 1991 GMC Sonoma

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

What info can a 1991 GMC Sonoma VIN reveal?

• Model Year: The VIN can reveal the vehicle’s model year as 1991, providing insights into the age and potential market value of the vehicle.
• Vehicle Type and Specifications: The VIN denotes a Sonoma, characterized by features such as a 4.3 L V-Shaped engine with 6 cylinders and a throttle body fuel injection system, showcasing the vehicle’s power and efficiency layout.
• Body Class and Size: The designation as a Pickup with an Extra/Super/Quad/Double/King/Extended cab type indicates its functionality and space offering, suitable for various work or personal needs.
• Drive Type and Engine Details: The 4x2 drive type coupled with details of the engine’s displacement in CC, CI, and liters along with its gasoline fuel type, highlights the vehicle’s drivetrain and fuel efficiency characteristics.
• Safety and Manufacturing Insights: The vehicle’s brake system is hydraulic, suggesting its safety mechanisms. Additionally, it was manufactured in Moraine, Ohio, USA, by ‘NA - Truck Platform’, providing clues about its production quality and origin.
• Gross Vehicle Weight Rating: Falling within Class 1C: 4,001 - 5,000 lb, the vehicle’s weight class points towards its load-carrying capacity and possibly its size and utility aspects.
• Engine Manufacturer and Additional Engine Information: The engine, made by CPC, and noted for its 90-degree configuration, hints at the vehicle’s performance capabilities and the engineering design principles applied.

Sample VIN Decode Report for a 1991 GMC Sonoma