Where is the radiator drain plug on 2003 Buick Century?

where do I find on the radiator of a buick century 03 the drain plug and how do I flush it properly?

The easiest way to flush, if radiator is left in the vehicle, is to have the car at normal operating temperature, open the radiator drain, and put a garden hose into the cap opening. Turn it on till as much water enters the radiator as is leaving the drain. Run the engine as you are flushing, and run it till the water runs clean out the drain. Then shut off and refill with a 50-50 mix of water and antifreeze.
If you take the radiator off, you could run the hose into the bottom hose fitting and let it drain out the top hose fitting or the radiator fill neck. A simple back flushing method that may help dislodge and flush out any particles-but the first method should work well enough if your radiator is in good shape and not clogged up with rust and scale.

It is either on the passenger side or driver side, lower corner of the radiator-it has a plastic bolt, and you usually need to remove a lower panel to gain access to it to drain it.

hi,, yeah you just turn it out, right to tighten, left to slacken, remember to remove your cap and leave a hose of running water flowing through the radiator to help wash out all the old stuff.

PS.. IF cant find the radiator drain plug, remove the button radiator hose..

Hi, if there is not a petcock or plug at the bottom of the radiator, you can just remove the lower radiator hose to drain the coolant. Many cars do not have drain plugs. Please let me know if you have more questions and thanks for using FixYa.

take the bottom hose off from the radiator

yes there is a small plastic plug on the bottom of the radiator.make sure car is cool.

I’m happy to help further over the phone at https://www.6ya.com/expert/kenneth_3efc1f8510674f04

Generally, when one wants to evacuate the system of the radiator fluid, one can remove the bottom hose in order to quickly drain the system, much faster and more minerals comeout that way than if you use the drain plug which is very small.

UNDO THE BOTTOM RADIATOR HOSE AND DRAIN IT OUT.. THEN GET SOME OF THAT BOILING TREATMENT AND LET THAT IDEL FOR 15 OR 20 MIN.. THEN PUT IN NEW COOLENT

You will have to jack the car up and get under it to get to the drain valve, it is located on the back side of the radiator tank, drivers side, if not there then opposite side..