* Consulting your owner's manual: This should have detailed information about your vehicle.
* Checking online resources: Websites like the National Highway Traffic Safety Administration (NHTSA) or manufacturer websites may provide technical specifications for the vehicle.
* Contacting a Buick dealership: A Buick dealership should be able to provide information about the fuel tank materials for your specific vehicle.
Please remember that fuel tank materials can vary depending on the year, model, and trim level of the vehicle.