How do you open the trunk of a Buick Roadmaster if i locked my keys in the trunk?

If you’ve locked your keys in the trunk of a Buick Roadmaster, you can try accessing it through the back seat if the rear seats fold down. If that’s not an option, you may need to use a slim jim or similar tool to unlock the trunk lock, but this can damage the vehicle if not done carefully. Alternatively, contacting a locksmith or your dealership for assistance is a reliable choice. Always consider having a spare key made to avoid this situation in the future.