The radiator drain plug on a 1996 Cadillac STS is located at the
bottom of the radiator, usually on the
driver's side (left). However, it's not always easily visible. You might need to get down low and possibly use a flashlight to locate it. It's typically a small, plastic or metal plug.
Important Note: Before attempting to drain the radiator, consult your owner's manual for the exact location and any specific instructions. The location might vary slightly depending on specific options or manufacturing changes.
