Free 2018 GMC Sierra VIN Decoder

How to decode a 2018 GMC Sierra VIN

Characters 1-3 of a 2018 GMC Sierra VIN

A World Manufacturer Identifier (WMI) is a unique code used to identify the manufacturer of a vehicle, encompassing detailed information such as the vehicle’s type, the manufacturing location, and the relevant model years. For the 2018 GMC Sierra, a pickup truck manufactured by General Motors LLC, three distinct WMIs can be pertinent, each designating specific information about the vehicle’s origin and type. The WMIs starting with “1GT,” “2GT,” and “3GT” all signify trucks produced by General Motors in Warren, Michigan, United States, each tailored for model years spanning from their inception up to 2024, with “2GT” specifically reemerging in 2018 after a hiatus. These codes are essential for decoding vital information about the vehicle, facilitating everything from regulatory compliance to service and parts identification. The inclusion of these WMIs reinforces the GMC Sierra’s standing within General Motors’ extensive line-up of trucks, illustrating the diverse manufacturing capabilities of the American automotive giant.

List of WMI Codes for a 2018 GMC Sierra

WMI: 1GT

• Model Years Covered: 1989-2024
• Example VIN: 1GT42XEY0JF115103
• Manufacturer Name: General Motors LLC
• Vehicle Type: Truck
• City: Warren
• State or Province: Michigan
• Country: United States

WMI: 3GT

• Model Years Covered: 2006-2024
• Example VIN: 3GTU1MEC0JG116207
• Manufacturer Name: General Motors LLC
• Vehicle Type: Truck
• City: Warren
• State or Province: Michigan
• Country: United States

WMI: 2GT

• Model Years Covered: 1989-2009, 2018
• Example VIN: 2GTV2MEC0J1100003
• 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 2018 GMC Sierra VIN

These characters correspond to components like:

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

Below find the most popular vehicle descriptor codes for a 2018 GMC Sierra:

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 2018 GMC Sierra 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 2018 GMC Sierra VIN — Year Code

11th Character in the 2018 GMC Sierra VIN — Plant Code(s)

Known 2018 GMC Sierra Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 2018 GMC Sierra

The final 6 characters in a 2018 GMC Sierra’s 17-digit VIN are its serial number, which will be unique to every vehicle.

What info can a 2018 GMC Sierra VIN reveal?

• Model Year: The VIN can reveal the vehicle’s model year as the year 2018, providing insights into the age and potential market value of the vehicle.
• Body Class and Drive Type: It can specify the vehicle as a Pickup with a 4WD (4-Wheel Drive/4x4) drive type, indicating both the body style and the drivetrain capabilities.
• Engine Details: The VIN discloses comprehensive engine specifications, revealing details such as a 4.3L V-Shaped engine configuration, 6 cylinders, and equipped with features such as Spark Ignited Direct Injection, Variable Valve Timing, and compatibility with E85 ethanol.
• Safety Features: Safety equipment such as airbags located in all rows and at the front (1st row for both driver and passenger) alongside side airbags, underscore the extensive safety measures.
• Fuel Type: The primary fuel type is Gasoline, with a secondary option of Ethanol (E85), indicating the vehicle’s flexibility in fuel usage.
• Manufacturing Information: Details like the manufacturing city (Fort Wayne), company (GMNA), and country (United States) are also encoded, pointing toward the vehicle’s production origin.
• Vehicle Identification: The VIN includes specific series and model (Sierra 1500 Fleet/Base) information, along with a sample VIN, offering a clear identifier for this particular vehicle, enhancing traceability and verification processes.

Sample VIN Decode Report for a 2018 GMC Sierra

Source