Vehicle Trim by VIN & Truck Spec Decoder
Enter a 17-character VIN to look up a vehicle's trim, year, make, model, and available manufacturer-reported truck specifications. The Trim / Series result can narrow your parts search; it is not a complete build sheet or a guarantee of tire size or aftermarket fitment.
Use your camera or a clear VIN photo, or enter the 17 characters manually.
Try a sample truck VIN:
How Truck VIN Decoding Works
This tool reads the 17-character VIN format used for U.S.-market trucks. For typical high-volume models, the positions below identify the manufacturer, vehicle attributes, model year, plant and production sequence:
- Positions 1–3 (WMI): World Manufacturer Identifier (e.g.
1GT= GM USA Truck,1FT= Ford USA Truck,1C6= Ram USA Truck,3TY= Toyota Mexico). - Positions 4–8 (VDS): Manufacturer-defined vehicle attributes, such as GVWR class, cab style, brake system and engine type.
- Position 9: Check digit for detecting transcription errors (mathematical checksum modulo 11).
- Position 10: Model year code. Recent examples include
P= 2023,R= 2024 andS= 2025; year codes repeat. - Position 11: Assembly plant code.
- Positions 12–17: Production sequence for high-volume manufacturers; low-volume manufacturers use some of these positions differently.
Sources: NHTSA VIN decoder guidance and U.S. VIN format and check-digit rules.
Need help interpreting the Trim / Series result? Read how to find a truck trim by VIN before comparing parts.
Frequently Asked Questions
How do I find my vehicle trim by VIN?
Enter the full 17-character VIN and submit it. If NHTSA vPIC returns a Trim / Series value, use it as a manufacturer-reported trim clue; blank or broad results need confirmation from the door label, window sticker, build sheet, or manufacturer record.
Can I check tire size by VIN number?
A VIN may narrow the vehicle configuration, but it is not the only source for tire size. Check the door or door-jamb Tire and Loading Information label, the owner's manual, the installed wheel and tire, and the tire maker's application notes.
Where do I find my truck's 17-character VIN?
Your VIN is located on the driver-side lower dashboard (visible through the windshield), on the driver-side door jamb certification label, on vehicle registration documents, and on your insurance card.
What truck specifications can be decoded from a VIN?
NHTSA vPIC can return the model year, manufacturer, assembly plant, engine, drive type, cab style and GVWR class. Results depend on manufacturer-reported data, so some fields may be missing. Check the vehicle's labels or manufacturer records for details the lookup does not return.
What is the check digit (position 9) in a VIN?
Under U.S. VIN rules, position 9 is a check digit calculated with a weighted modulo-11 formula. It helps detect VIN transcription errors. A matching check digit does not authenticate the vehicle or prove that its VIN label is genuine.
Can a VIN guarantee exact aftermarket part fitment?
No. A VIN lookup can help narrow the truck's factory configuration, but it does not guarantee aftermarket part fitment. Confirm the part maker's application notes for the model year, engine, drivetrain, cab, bed and options, and account for modifications before ordering.