Where are the freeze plugs at on a Buick century 2001?

Freeze plugs, also known as core plugs, on a 2001 Buick Century are generally located on the engine block itself. There isn't a single, easily accessible location. They are typically found on the engine's side(s) and sometimes on the bottom.

To find them, you'll need to:

* Consult a repair manual specific to your 2001 Buick Century's engine: This is the best way to pinpoint their exact location. The manual will have diagrams showing the freeze plug positions.

* Look closely at the engine block: They are usually round, somewhat recessed, and often slightly larger than other similar-sized holes in the block. They're typically found where the block casting meets internal coolant passages.

* Examine the bottom of the engine block: Some freeze plugs are located on the bottom, though accessing them might require removing parts of the vehicle's undercarriage.

Caution: Don't attempt to locate or replace freeze plugs without the proper knowledge and tools. Improper removal or replacement can lead to serious engine damage. If you suspect a freeze plug is leaking or damaged, consult a qualified mechanic.