If it has one it will be located on the bottom of the radiator. If not, then just remove the lower hose to drain the radiator.
on the radiator
Should be at the bottom of the radiator logically...
if there is no drain petcock on lower radiator tank, removing bottom radiator hose at radiator is the only way to drain radiator
If it does not have a drain plug, just simply remove the lower radiator hose.
they are at the bottom corner of the radiator.
engine side of radiator, toward the bottom, drivers side.
May just be a plug located at the bottom or rear of radiator
Where is the ac drain tube for 2004 grand prix
Look closely at the radiator. Check the bottom corner of the radiator that is opposite of the lower radiator hose. If there is no drain plug or petcock, then the coolant will need to be drained by removing the lower radiator hose.
Its located on the radiator passanger side about 3" below the radiator cap.
It does not have a A/T drain plug. The pan must be removed.
Look at the rear of the radiator approx. 1/3 from the top