VIN Decoder for Trucks & Trailers
Paste any 17-character VIN — trucks, trailers, tractors, or heavy equipment — and get the year, make, model, body class, GVWR, and more. Powered by the free NHTSA vPIC database.
Running a diesel shop? Save every VIN with the truck.
WrenchDeck stores VINs against each truck and trailer, auto-fills year/make/model on new units, and prints them on every invoice and inspection.
VIN Decoder FAQ
What is a VIN?
A VIN (Vehicle Identification Number) is a 17-character code that uniquely identifies a motor vehicle, including trucks and trailers. It encodes the manufacturer, year, model, engine type, body style, and more. VINs use letters and numbers but never I, O, or Q to avoid confusion with 1 and 0.
Where do I find the VIN on a truck or trailer?
On tractors and straight trucks, look at the driver-side door jamb sticker, the dashboard plate visible through the base of the windshield, or the engine block. On trailers, check the front frame rail, the VIN plate on the tongue, or inside the frame near the landing gear. Older units sometimes only carry the VIN on the frame rail.
Is this VIN decoder really free?
Yes — no signup, no credit card, no rate limit for normal use. This page queries the U.S. National Highway Traffic Safety Administration (NHTSA) vPIC public database directly from your browser.
Does it work for trailers and heavy equipment?
Yes. NHTSA vPIC covers commercial trailers, trucks over 10,000 lb GVWR, and most on-road heavy equipment. Trailer results include the trailer body type and GVWR when reported by the manufacturer.
Why is some data missing for older VINs?
NHTSA has richer data for vehicles built from about 1981 onward, and even more detail for 2010+ model years. Pre-1981 VINs used shorter, non-standard formats and often only return partial data.