Where do you add the coolant for a 1997 Cadillac sts?

To add coolant to a 1997 Cadillac STS, open the hood and locate the coolant reservoir, which is typically a translucent plastic tank near the front of the engine compartment. Ensure the engine is cool, then remove the cap from the reservoir and pour the appropriate coolant mixture into it until it reaches the "full" mark. Always check the owner's manual for specific coolant type recommendations and maintenance procedures.