Where is the radiator cap located on a 2001 Cadillac dts?

The radiator cap on a 2001 Cadillac DTS is located on the top of the radiator, which is typically at the front of the engine compartment. It's usually a fairly large, black cap. However, because the exact location can vary slightly depending on specifics of the vehicle and any modifications, it's best to visually locate it by looking at the top of the radiator in the front of the engine bay. Be cautious when opening it as the system will be under pressure when hot.