The flush valve for the radiator on a 1999 Buick Century is located on the bottom of the radiator near the vehicle's frame. When it is loosened, the coolant will slowly drain from the vehicle.
There isn't one. You will have to loosen the lower radiator hose to drain the radiator.
Where are the relay switches on a 1999 Buick Century for the headlights
how do I remove the sunvisors off a 1999 Buick Century
On the bottom of the radiator. If there is no drain plug, simply remove the lower radiator hose to drain the coolant from the radiator.
To drain the radiator on a 1999 Ford Expedition, place a bucket under the radiator. Unscrew the radiator drain hose or valve on the bottom of the radiator. Remove the radiator cap.
You will find that it is located on the bottom of the radiator. If you do not find a drain Petcock on the bottom of the radiator you must remove the lower radiator hose in order to drain the radiator.
how to replace window toggle switch 1999 buick century
Unscrew the drain plug, or pull the bottom radiator hose off
To actually "flush" the coolant in this vehicle you will need a flush machine. To do that we did at the dealership, drain the radiator (you need a 1/4 inch ratchet and 1 inch extension) then use a vacuum fill too to fill with new coolant.
how do you drain s 1999 olds cutlass radiatoe