Enter your VIN (Vehicle Identification Number) below to find out. What’s a VIN? What's a VIN? The vehicle identification number (VIN), since model year 1981, is a series of 17 letters and numbers. Accepted as the world standard for identifying vehicles, the VIN provides key information about the manufacturer, model, model year, make, equipment and class of a vehicle. By entering your VIN, we can tell you whether SIRIUS has been installed in your vehicle. Where do I find my VIN? You can find the VIN: on a plaque on the dash or doorpost of your vehicle printed on your vehicle registration printed on your vehicle insurance slip printed on your vehicle’s bill of sale printed on recent service invoices from your dealership or other service outlet Enter Your VIN (Vehicle Identification Number)