How to Understand a Dodge Truck VIN Number

Before 1968, automobiles' VINs, or vehicle identification numbers, were like fingerprints: unique but uninformative. Since the adoption of the 17-digit code for all production vehicles in 1981, the VIN numbers are more like DNA. They are both unique and filled with information about the vehicle to which they are attached. Between 1968 and 1981, various modifications were made to the VIN system, leading to the current coding. The same basic coding is used for all vehicles, from Dodge trucks to imported roadsters made for sale in America. VIN decoder websites offer specific information on a vehicle from any VIN number. However, not all sites include older and classic cars.

• 1

  Check the first three digits of the VIN. This is called the world producer code. The first character represents the country of origin. The code for the United States is usually "1" but occasionally it is "4." The second character is the manufacturer code. The Dodge code is "B". The third character is the division code. In the case of Dodge trucks this is usually "7."

• 2

  Examine the fourth through ninth characters. Manufacturers use spots four through eight to describe specific components and characteristics of the vehicle. The characteristics described can change from year to year, but the series is always used for vehicle description. In Dodge trucks, the series usually is coded for weight rating, engine, drive train and cab style. The ninth digit is an accuracy check used by the Federal Department of Transportation.

• 3

  Check the tenth character. It tells model year of the vehicle. These rotate in a 30-year cycle. For 20 years letters are used. Then numbers are used for ten years, before switching back to letters.

• 4

  Examine the 11th character. It is used by the manufacturer as a code for the assembly plant. All the characters that follow are the actual serial number of the vehicle.