Your Pontiac Grand Prix has a 17-character vehicle identification number (VIN) that tells a great deal about the car. The first five characters tell the country of the vehicle's origin, the vehicle's manufacturer and its make. General Motors uses the sixth through eighth characters to identify the body type, seat belt arrangement and engine. The ninth character is used to prevent fraud and the 10th identifies the vehicle's year. GM uses the 11th and remaining characters to identify the manufacturing plant and the sequence the car came off the assembly line.
Look for your Grand Prix's VIN on your title, registration card or insurance papers. If you cannot find your vehicle's paperwork, you can find the VIN on the vehicle.
Look for the VIN stamped on a small metal plate located on the driver's-side of the dashboard, near the windshield. Look through the windshield to see it better.
Count the characters of the VIN to the eighth position. If it is a "J," that means it has a 3.1-liter V-6 engine with fuel injection, identifying it as a Grand Prix VIN "J" Model.
