GMC GMT-400 VIN Decoder & Lookup

How to decode a GMC GMT-400 VIN

Characters 1-3 of a GMC GMT-400 VIN

A World Manufacturer Identifier (WMI) is a unique three-letter code that identifies the manufacturer of a vehicle, signaling the vehicle’s make, type, and the country of manufacture. Specifically, for the GMC GMT-400, the WMI codes are 2GT and 1GT, distinguishing General Motors trucks constructed in Warren, Michigan, United States. These codes are integral to the vehicle identification number (VIN), providing essential information about the vehicle, including its model year, which for these WMIs is documented as 1988. The identification system aids in tracking, regulation, and recall purposes, showcasing the vital role of WMIs in automotive identification and international compliance. This standardized identifier not only supports regulatory and logistic processes but also assists consumers in verifying vehicle history and specifications.

List of WMI Codes for a GMC GMT-400

WMI: 2GT

Model Years Covered: 1988
Example VIN: 2GTEC19K9J1581057
Manufacturer Name: General Motors LLC
Vehicle Type: Truck
City: Warren
State or Province: Michigan
Country: United States

WMI: 1GT

Model Years Covered: 1988
Example VIN: 1GTDK14K2JZ517813
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 GMC GMT-400 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 GMC GMT-400:

Known VDS for a GMC GMT-400
EC19K	DC14H	DK14K	HC39N	GC34K	GC39N	GK34N	DC14K	DK14H	EK19K
FK24K	GK39K	HC34N	DC14Z	FC24K	DC19H	GC34N	FC29K	DK14Z

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 GMC GMT-400 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 GMC GMT-400 VIN — Year Code

Year Code	Year
J	1988 GMC GMT-400

11th Character in the GMC GMT-400 VIN — Plant Code(s)

Known GMC GMT-400 Assembly Factory VIN Code(s)

Plant Code	Plant City	Plant State	Plant Country	Plant Company Name	Example VIN
1	Oshawa Truck	Ontario	Canada	Na-Canada-Truck	2GTEC19K9J1581057
E	Pontiac	Michigan	United States	Na-Truck Platform	1GTGC34K1JE508999
Z	Fort Wayne	Indiana	United States	Na-Truck Platform	1GTDK14K2JZ517813

VIN Characters 12 - 17 of a GMC GMT-400

The final 6 characters in a GMC GMT-400’s 17-digit VIN are its serial number, which will be unique to every vehicle.

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How to find a GMC GMT-400’s VIN?

Locating the VIN number on your GMC GMT-400 is key for identification. Here’s how to find it:

Look at the dashboard on the driver’s side of your GMC GMT-400, where it is usually visible through the windshield on a metal plate.
Examine the door jamb on the driver’s side of your GMC GMT-400 for a label or sticker that displays the VIN where the door latches when closed.
Check under the hood of your GMC GMT-400. The VIN might be found on a decal or metal plate near the engine block.
Inspect the rear wheel well. On some GMC GMT-400 models, the VIN can be found stamped above the tire.
Look at your vehicle registration card or insurance documents. For GMC GMT-400 owners, these documents always contain the VIN, serving as an easy reference.

What info can a GMC GMT-400 VIN reveal?

Model Year: The VIN can reveal the vehicle’s model year, possibly indicating the year 1988, offering insights into the age and potential historical value of the vehicle.
Body Class and Vehicle Type: It specifies the vehicle as a Pickup and categorizes it as a Truck, offering essential information about its utility and possible use cases.
Engine Specifications: Detailed engine information includes a V-Shaped, 4.3L (4300.0 CC or 262.40209960734 CI) engine with Throttle Body Fuel Injection (TBI), showcasing the vehicle’s powertrain capabilities.
Fuel Type: The specified primary fuel type is Gasoline, which is vital for understanding the vehicle’s operational costs and environmental impact.
Drive Type: Classified as 4WD/4-Wheel Drive/4x4, indicating enhanced off-road capability and potential for various driving conditions.
Manufacturing Location: Produced in Fort Wayne, Indiana, United States, this data point can suggest the quality standards and design influences based on the manufacturing origin.
Gross Vehicle Weight Rating: Positioned in Class 1D, with a weight range between 5,001 - 6,000 lb (2,268 - 2,722 kg), which impacts its handling, fuel economy, and possibly its regulatory classification.

Don’t have your GMC GMT-400’s VIN handy? Try our license plate lookup instead!

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Sample VIN Decode Report for a GMC GMT-400

Vehicle Spec	Value
Body Class	Pickup
Brake System Type	Hydraulic
Cab Type	Extra/Super/Quad/Double/King/Extended
Displacement (CC)	5700.0
Displacement (CI)	347.83534133997
Displacement (L)	5.7
Drive Type	4x2
Engine Configuration	V-Shaped
Engine Manufacturer	CPC
Engine Number of Cylinders	8
Fuel Delivery / Fuel Injection Type	Throttle Body Fuel Injection (TBI)
Fuel Type - Primary	Gasoline
Gross Vehicle Weight Rating From	Class 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg)
Model	GMT-400
Model Year	1988
Other Engine Info	LPG conversion can be accomplished on the engine.
Plant City	Oshawa Truck
Plant Company Name	NA-canada-Truck
Plant Country	Canada
Plant State	Ontario
Series	Conventional Cab
Trim2	1/2 ton nominal
Vehicle Descriptor	2GTEC19K*J1
Vehicle Type	Truck
Sample_VIN	2GTEC19K9J1581057