There is no drain plug, remove the lower radiator hose to drain coolant.
The 2004 GMC radiator drain is located on the bottom of the radiator. The radiator drain plug can be removed with a half inch ratchet.
There is no plug for the radiator, you have to take out the lower hose from under the car and let the radiator drain.
Bottom of the radiator.
there isn't a radiator drain plug. you have to remove the lower radiator hose from the radiator to do a drain and fill.
To drain the radiator on a 2001 GMC Sonoma, first ensure the engine is cool and then locate the radiator drain plug at the bottom of the radiator. Place a drain pan under the radiator, open the drain plug, and allow the coolant to fully drain out. After draining, close the plug securely, and refill the radiator with fresh coolant. Be sure to dispose of the old coolant properly, as it is toxic.
It seems these 2007-2013 GM lambar do not have drain plug.
The drain plug is usually located about 2-3 inches from the bottom of the radiator on the passneger side. If you can't find one, you will have to remove the lower radiator hose and drain that way. Be careful to make sure that the engine is cool before performing any work.
bottom driver side of radiator
Look atr bottom or rear of radiator
Look either at the bottom of radiator or on the rear of the radiator bottom
On a 2001 GMC Savana 5.7 V8. There is no drain plug. You actually have to remove the big hose that joins the engine to the radiator. This will drain out all the fluids.