Free 1991 GMC Suburban VIN Decoder

How to decode a 1991 GMC Suburban VIN

Characters 1-3 of a 1991 GMC Suburban VIN

A World Manufacturer Identifier (WMI) is a unique code that identifies the manufacturer of a vehicle, encompassing details like the country of assembly, the vehicle type, and the manufacturing company. For instance, in the WMI of a 1991 GMC Suburban, ‘1GK’ signifies a vehicle assembled in the United States, specifically by General Motors LLC. This particular code is designated for multipurpose passenger vehicles, indicating its broad functionality. It highlights that this GMC Suburban was assembled in Warren, Michigan, offering a glimpse into the origins of this model. Understanding the WMI provides valuable insights into a vehicle’s manufacturing background and specifications.

List of WMI Codes for a 1991 GMC Suburban

WMI: 1GK

• Model Years Covered: 1987-2000
• Example VIN: 1GKEV16K6MF513637
• Manufacturer Name: General Motors LLC
• Vehicle Type: Multipurpose Passenger Vehicle (MPV)
• City: Warren
• State or Province: Michigan
• Country: United States

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

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 Suburban 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 Suburban VIN — Year Code

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

Known 1991 GMC Suburban Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 1991 GMC Suburban

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

Check your GMC Suburban’s VIN below:

What info can a 1991 GMC Suburban VIN reveal?

• Model Year: The VIN can reveal the vehicle’s model year, indicating that the vehicle is from the year 1991, providing insights into the age and potential market value of the vehicle.
• Vehicle Type and Body Class: The VIN designates the vehicle as a Multipurpose Passenger Vehicle, specifically a Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV), offering detailed insights into the vehicle’s purpose and design.
• Engine Details: Encoded within the VIN are details about the engine, including a V-Shaped configuration, 8 cylinders, and a displacement of 5.7L (347.835 CI or 5700 CC), manufactured by CPC. The engine supports Throttle Body Fuel Injection (TBI) and runs on Gasoline, with capabilities for LPG conversion.
• Drive Type and GVWR (Gross Vehicle Weight Rating): The VIN indicates a drive type of 4x2 and falls into the Gross Vehicle Weight Rating class of 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg), showcasing the vehicle’s intended load capacity and drivetrain configuration.
• Manufacturing Information: Insights provided by the VIN include the vehicle being assembled in Flint, Michigan, United States, underlining the vehicle’s manufacturing origin and associated quality standards.
• Model Specifics: Specifics such as the model name “Suburban,” trim indicating a “1/2 ton nominal,” and series “Conventional Cab” give a clear identification along with specifics about the vehicle’s design and intended use market.

Sample VIN Decode Report for a 1991 GMC Suburban