The radiator drain plug on a 1993 Cadillac Seville STS is located at the
bottom of the radiator, typically on the
driver's side. However, it's
not always easily visible. You might need to get under the car and possibly use a flashlight to locate it. It's usually a small plug, often brass or plastic, and might be somewhat recessed.
Important Note: Before attempting to drain the radiator, consult your owner's manual for specific instructions and safety precautions. The coolant can be very hot, so let the engine cool completely before working on it. Also, be prepared to catch the coolant in a suitable container.
