What WMI codes does GMC use?

GMC uses several World Manufacturer Identifier (WMI) codes depending on vehicle type and manufacturing country, including: 1GT, 3GT.

How can I tell what factory built my GMC?

The 11th character of your GMC VIN indicates the assembly plant factory code. Refer to our factory code directory below to identify your vehicle's exact assembly plant.

Are safety recall checks free for GMC?

Yes! Under federal law, all safety defect repairs issued by GMC or the NHTSA are performed free of charge at any authorized franchised GMC dealership.

United States • Founded 1912

GMC VIN Decoder & Vehicle Specifications

GMC commercial vehicles and trucks produced in the United States bear 1GT, while select units from Mexican assembly facilities bear 3GT.

Character count: 17/17

GMC WMI Codes

First 3 characters identifying country & division:

1GT 3GT

Assembly Plant Codes (Digit 11)

Code '1':Wentzville Assembly, Missouri, USA (Canyon)

Code 'F':Flint Assembly, Michigan, USA (Sierra HD)

Code 'R':Arlington Assembly, Texas, USA (Yukon)

Code 'Z':Fort Wayne Assembly, Indiana, USA (Sierra 1500)

VIN Locations on GMC

Windshield lower left corner on dashboard
Driver door latch pillar sticker
Glove box Service Parts identification label
Registration paperwork

Popular GMC Models

Sierra 1500

Yukon

Terrain

Acadia

Canyon

Yukon XL

Sierra HD

Complete Guide to GMC Vehicle Identification Numbers

Every GMC vehicle produced for the global marketplace conforms to federal 49 CFR Part 565 and ISO 3779 standards. Decoding your GMC VIN allows you to verify original equipment specifications, factory trim packages, engine tuning, and active safety recall eligibility.

Where to Inspect the GMC VIN

Always cross-reference the public VIN plate located on the lower driver-side dashboard through the windshield with the safety certification sticker located on the driver-side B-pillar door shut face. On GMC vehicles, matching underhood stampings confirms authentic unibody and chassis integrity.

Frequently Asked Questions

On most GMC vehicles, the VIN is located at the lower driver-side corner of the windshield, on the federal certification label on the driver's door jamb/B-pillar, and stamped on the engine firewall or passenger shock tower.