There is no drain plug, you have to remove the bottom hose.
The cooling system on these vehicles is drained by detaching the lower radiator hose from the radiator. The radiator doesn't have a drain plug.
Locate the plug on the bottom of the radiator to drain it. Put some radiator cleaner in and drain it again.
Drain the radiator. Remove the lower radiator hose from the motor. Unbolt the hose inlet, and remove the thermostat. Replace the thermostat and the inlet, the hose, and refill the radiator.
The radiator drain on a 2004 Chevrolet Tahoe 5.3 is on the bottom of the radiator. It is on the right side and has a cover over it.
The Chevrolet Malibu radiator drain plug can be found on the right side of the radiator. The drain plug will be at the bottom of the radiator.
The 2003 Chevrolet Cavalier radiator drain petcock is located on the bottom of the radiator. The drain will be towards the right side of the radiator.
The radiator drain plug on a Chevrolet Corsica is the lowest, skinniest hose on the back of the radiator. The radiator cap will have to be removed to allow for fast draining after this hose is removed.
It is beneath the lower radiator hose.
If it is not on the bottom of the radiator, then just remove the lower radiator hose to drain the system.
under the radiator, driver side.
Just below the bottom radiator hose is the radiator petcock.jd
It's a small drain cock on the bottom of the radiator.