Free 2004 GMC Sierra VIN Decoder

How to decode a 2004 GMC Sierra VIN

Characters 1-3 of a 2004 GMC Sierra VIN

A World Manufacturer Identifier (WMI) is part of the Vehicle Identification Number (VIN) system, designating the manufacturer of the vehicle and providing specific information about it. For a 2004 GMC Sierra, the WMI can be either “1GT” or “2GT,” depending on where the truck was manufactured. This code indicates that the vehicle is a truck produced by General Motors LLC in Warren, Michigan, United States. The WMI is critical in identifying key attributes of the vehicle, such as its model year, making it essential for registration, insurance, and manufacturing recall purposes. The distinction between the “1GT” and “2GT” prefixes primarily lies in geographical variations in production.

List of WMI Codes for a 2004 GMC Sierra

WMI: 1GT

• Model Years Covered: 1989-2024
• Example VIN: 1GTHK23104F143949
• 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: 2GTEK19V041117754
• 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 2004 GMC Sierra 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 2004 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 2004 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 2004 GMC Sierra VIN — Year Code

11th Character in the 2004 GMC Sierra VIN — Plant Code(s)

Known 2004 GMC Sierra Assembly Factory VIN Code(s)

VIN Characters 12 - 17 of a 2004 GMC Sierra

The final 6 characters in a 2004 GMC Sierra’s 17-digit VIN are its serial number, which will be unique to every vehicle.

What info can a 2004 GMC Sierra VIN reveal?

• Model Year: The VIN can reveal the vehicles model year, such as 2004, providing insights into the age and potential market value of the vehicle.
• Body Class and Size: The VIN specifies the vehicle as a Pickup truck, offering insights into its intended use, capacity, and size, providing some indication of its design and structure.
• Engine Type and Displacement: Details such as the engine being V-Shaped with a displacement of 4.3 Liters and an Engine Model “LU3” highlight the vehicle’s potential performance capabilities and design features.
• Fuel Type: The VIN indicates that the primary fuel type for the vehicle is Gasoline, offering some information about the vehicle’s environmental impact and fuel consumption.
• Drive Type and Brake System: The VIN reveals that the vehicle features a 4x2 drive type and a Hydraulic brake system, which may provide some insights into the vehicle’s handling characteristics and safety features.
• Manufacturing Details: The VIN specifies manufacturing specifics such as the Plant City “Roanoke”, Plant Country “United States”, and the Plant Company Name “Fort Wayne Assembly”, offering a glimpse into the vehicle’s origin and the quality standards of its production.
• Safety and Performance Features: Details like the vehicle being equipped with Multipoint Fuel Injection (MPFI) and an Overhead Valve (OHV) Valve Train Design can be deduced, which may be essential for understanding the vehicle’s efficiency and performance levels.

Sample VIN Decode Report for a 2004 GMC Sierra